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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1499 (Heating & Air Conditioning (On Board Diagnostic)) >> 01 On Board Diagnostic (OBD) >> Diagnostic Trouble Code (DTC) Memory, checking (function 02) >> DTC table up to DTC code "00975"

DTC table up to DTC code "00975"

WARNING: This page is about a different car, the 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
65535 No malfunction recognized If no malfunction is detected despite problems with the air conditioner/heater electronics, perform functions "03" (Output Diagnostic Test Mode (DTM) diagnosis) and "08" (reading measuring value block) and check coding of operating and display module, Climatronic Control Module J255 or Instrument Cluster Control Module J285 → Climatronic Control Module J255, coding (function 07) 
NOTE:
  • For this vehicle, the basic setting (e.g. country version, left-hand drive or right-hand drive) is coded in the Instrument Cluster Control Module J285 and transmitted via the "CAN-Bus comfort system" to the connected vehicle systems. The currently valid code is displayed in the measuring value block → Read Measuring Value Block (function 08) . The direct entry of a code in the operating and display module, Climatronic Control Module J255 is only provided for certain items of equipment (e.g. Heated Windshield Z2, vehicle model: Saloon, Avant or Cabrio and sunroof with solar cells) → Climatronic Control Module J255, coding (function 07) , "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00457 Vehicle Electrical System Control Module J519    
 
  • Check DTC memory
  • The Vehicle Electrical System Control Module J519 cannot output the required data because of a malfunction and sets a malfunction.
  • The Vehicle Electrical System Control Module J519 cannot output the required data because of a malfunction in an upstream component and sets a malfunction.
  • Check DTC memory of Vehicle Electrical System Control Module J519 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
  • Determine and eliminate the causes of all DTCs in the DTC memory of the Vehicle Electrical System Control Module J519.
 
  • No communication (time out)/SP
  • Open circuit in both signal wires (CAN-Bus system) between Vehicle Electrical System Control Module J519 and operating and display module, Climatronic Control Module J255
  • Use wiring diagram to locate and eliminate open circuit or loose contact at both signal wires (CAN-Bus system) between Vehicle Electrical System Control Module J519 and operating and display module, Climatronic Control Module J255
  • Check CAN-Bus comfort system → CAN-Bus comfort system, checking .
Continued in next    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00457 (continued)    
 
  • No communication (time out)/SP
  • Malfunction affecting data output in Vehicle Electrical System Control Module J519 or in a component connected to it.
  • Check DTC memory of Vehicle Electrical System Control Module J519 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
   
  • No data transmitted by Vehicle Electrical System Control Module J519.
  • The operating and display module, Climatronic Control Module J255 cannot read the data transmitted by the Vehicle Electrical System Control Module J519.
   
  • Interruption of voltage to Vehicle Electrical System Control Module J519 with ignition switched on.
  • Check and erase DTC memories of all control units connected to CAN-Bus comfort system "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
NOTE:
  • Reception of the information is displayed in the measuring value block (display group "125").
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00466 Steering Column Electronic Systems Control Module J527    
 
  • Check DTC memory
  • The Steering Column Electronic Systems Control Module J527 cannot output the required data because of a malfunction and sets a malfunction.
  • The Steering Column Electronic Systems Control Module J527 cannot output the required data because of a malfunction in an upstream component and sets a malfunction.
  • Check DTC memory of Steering Column Electronic Systems Control Module J527 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
  • Determine and eliminate the causes of all DTCs in the DTC memory of the Steering Column Electronic Systems Control Module J527.
 
  • No communication/SP
  • Interruption of voltage to Steering Column Electronic Systems Control Module J527 with ignition switched on.
  • Eliminate cause of trouble and check and erase DTC memories of all control units connected to CAN-Bus comfort system "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
Continued in next table    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00466 (continued)    
 
  • No communication/SP
  • Malfunction affecting data output in Steering Column Electronic Systems Control Module J527 or in a component connected to it.
  • Check DTC memory of Steering Column Electronic Systems Control Module J527 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
   
  • No data transmitted by Steering Column Electronic Systems Control Module J527.
  • The operating and display module, Climatronic Control Module J255 cannot read the data transmitted by the Steering Column Electronic Systems Control Module J527.
   
  • Open circuit in both signal wires (CAN-Bus system) between Steering Column Electronic Systems Control Module J527 and operating and display module, Climatronic Control Module J255
  • Use wiring diagram to locate and eliminate open circuit or loose contact at both signal wires (CAN-Bus system) between Steering Column Electronic Systems Control Module J527 and operating and display module, Climatronic Control Module J255
  • Check CAN-Bus comfort system → CAN-Bus comfort system, checking .
NOTE:
  • Reception of the information is displayed in the measuring value block (display group "125").
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00474 Anti-Theft Immobilizer Control Module J334    
 
  • No communication (time out)/SP
  • Immobilizer Adaptation not performed as specified and in full.
  • Starting implemented using a key not released for this vehicle (e.g. by way of emergency starting function).
  • Check DTC memory of Instrument Cluster Control Module J285 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
  • Switch on ignition with a released ignition key, adapt ignition key used and check and erase DTC memory of operating and display module, Climatronic Control Module J255 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
   
  • Malfunction affecting data output in Instrument Cluster Control Module J285 or in a component connected to it
  • Check DTC memory of Instrument Cluster Control Module J285 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
   
  • No data transmitted by Instrument Cluster Control Module J285.
  • The operating and display module, Climatronic Control Module J255 cannot read the data transmitted by the Instrument Cluster Control Module J285.
NOTE:
  • The Anti-Theft Immobilizer Control Module J334 is installed in the Instrument Cluster Control Module J285.
  • The malfunction (Anti-Theft Immobilizer Control Module J334) is only detected by an operating and display module, Climatronic Control Module J255 with hardware/software as of version "0711". This function was incorporated as part of enhancement of the anti-theft protection system.
  • If the ignition is switched on using a key not released for this vehicle, the operating and display module, Climatronic Control Module J255 switches automatically to "Off" mode after switching on the ignition and can only be switched to "Def" mode with the ignition switched on (no other settings possible).
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00532 Voltage supply    
 
  • Signal too small/SP
  • Voltage dips in vehicle electrical system to values below 9.5 V
  • Check Generator (GEN) C and Voltage Regulator (VR) C1
 
  • Signal too large/SP
  • Voltage in vehicle electrical system has exceeded 15 V
  • Check Generator (GEN) C and Voltage Regulator (VR) C1
NOTE:
  • If the electrical system voltage (at connector "C", contact "13") drops to a value below 9.5 V, the heating of e.g. the Heated Rear Window Z1, Drivers Seat Heating Element Z6 and Front Passengers Seat Heating Element Z8 is deactivated.
  • The malfunction "Signal too large" may also be displayed for example if an unsuitable charging unit is used for charging the Battery A.
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00601 Central Flap Motor Position Sensor G112 in Central Air Flap Motor V70    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit, open circuit in wiring or wiring malfunction between Central Flap Motor Position Sensor G112 and operating and display module, Climatronic Control Module J255
  • Central Flap Motor Position Sensor G112 in Central Air Flap Motor V70 defective
  • Use wiring diagram to locate and eliminate short circuit, open circuit in wiring or wiring malfunction.
  • Replace Central Air Flap Motor V70.
 
  • Adaptation limit exceeded
  • Central flap stiff
  • Central Flap Motor Position Sensor G112 in Central Air Flap Motor V70 defective
  • Check freedom of movement of central flap
  • Replace Central Air Flap Motor V70
NOTE:
  • The DTC "Adaptation limit exceeded" is only detected during basic setting. If this malfunction occurs, a substitute value is stored as adaptation value (adaptation value for this potentiometer) and displayed in the corresponding measuring value block.
  • If the DTC "Adaptation limit exceeded" is displayed, check whether flap reaches both end stops and that there is no excessive play in the operating levers (wear).
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00604 Back Pressure Flap Motor Position Sensor G113 in Air Flow Flap Motor V71    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit, open circuit in wiring or wiring malfunction between Back Pressure Flap Motor Position Sensor G113 and operating and display module, Climatronic Control Module J255
  • Back Pressure Flap Motor Position Sensor G113 in Air Flow Flap Motor V71 defective
  • Use wiring diagram to locate and eliminate short circuit, open circuit in wiring or wiring malfunction
  • Replace Air Flow Flap Motor V71
   
  • Operating and display unit, Climatronic Control Module J255 incorrectly coded.
 
  • Adaptation limit exceeded
  • Fresh-air/air flow flaps stiff
  • Back Pressure Flap Motor Position Sensor G113 in Air Flow Flap Motor V71 defective
  • Check freedom of movement of fresh-air/air flow flaps
  • Replace Air Flow Flap Motor V71
Continued in next table    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00604 (continued)    
 
  • Open circuit/short to positive/SP
  • Comfort System Central Control Module J393 incorrectly coded.
  • Check coding transmitted to operating and display module, Climatronic Control Module J255 → Read Measuring Value Block (function 08) .
  • Check coding of Comfort System Central Control Module J393 and code as specified if necessary "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
NOTE:
  • This control motor is used to activate the air flow/fresh-air flap.
  • The DTC "Adaptation limit exceeded" is only detected during basic setting. If this malfunction occurs, a substitute value is stored as adaptation value (adaptation value for this potentiometer) and displayed in the corresponding measuring value block.
  • If the malfunction "Adaptation limit exceeded" is displayed, check whether the flaps reach both end stops and that there is no excessive play in the operating levers (wear).
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00710 Defroster Flap Motor V107    
 
  • Blocked or no voltage/SP
  • Short circuit, open circuit in wiring or wiring malfunction between Defroster Flap Motor V107 and operating and display module, Climatronic Control Module J255
  • Use wiring diagram to locate and eliminate short circuit, open circuit in wiring or wiring malfunction
   
  • Defroster flap stiff
  • Check freedom of movement of defroster flap
   
  • Defroster Flap Motor V107 defective
NOTE:
  • In the case of an operating and display module, Climatronic Control Module J255 up to hardware/software version "0203", the type of malfunction "Short to Ground (GND)" or "Open circuit/short to positive" may also be displayed for this control motor. The malfunction with these operating and display modules, Climatronic Control Module J255 is the same as for the malfunction "Blocked or no voltage".
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00716 Recirculation Flap Motor V113    
 
  • Blocked or no voltage/SP
  • Short circuit, open circuit in wiring or wiring malfunction between Recirculation Flap Motor V113 and operating and display module, Climatronic Control Module J255
  • Use wiring diagram to locate and eliminate short circuit, open circuit in wiring or wiring malfunction
   
  • Recirculated-air flap stiff (left-hand drive vehicles)
  • Check freedom of movement of recirculated-air flap
   
  • Fresh-air flaps or recirculated-air flap stiff (right-hand drive vehicles)
  • Check freedom of movement of fresh-air flaps and recirculated-air flap
   
  • Recirculation Flap Motor V113 defective
   
  • Operating and display unit, Climatronic Control Module J255 incorrectly coded.
  • Read measuring value block (display group "019"), check coding of operating and display module, Climatronic Control Module J255 and code transmitted to operating and display module, Climatronic Control Module J255 → Read Measuring Value Block (function 08) 
   
  • Comfort System Central Control Module J393 incorrectly coded.
  • Check coding of Comfort System Central Control Module J393 and code as specified if necessary "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
NOTE:
  • The Recirculation Flap Motor V113 only moves the recirculated-air flap. The air flow/fresh-air flaps are moved by the Air Flow Flap Motor V71.
  • In the case of operating and display modules, Climatronic Control Module J255 up to hardware/software version "0203", the type of malfunction "Short to Ground (GND)" or "Open circuit/short to positive" may also be displayed for this control motor. The malfunction with these operating and display modules, Climatronic Control Module J255 is the same as for the malfunction "Blocked or no voltage".
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00727 Defroster Flap Motor Position Sensor G135 in Defroster Flap Motor V107    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit, open circuit in wiring or wiring malfunction between Defroster Flap Motor Position Sensor G135 and operating and display module, Climatronic Control Module J255
  • Defroster Flap Motor Position Sensor G135 in Defroster Flap Motor V107 defective
  • Use wiring diagram to locate and eliminate short circuit, open circuit in wiring or wiring malfunction
  • Replace Defroster Flap Motor V107
 
  • Adaptation limit exceeded
  • Defroster flap stiff
  • Defroster Flap Motor Position Sensor G135 in Defroster Flap Motor V107 defective
  • Check freedom of movement of defroster flap
  • Replace Defroster Flap Motor V107
NOTE:
  • The DTC "Adaptation limit exceeded" is only detected during basic setting. If this malfunction occurs, a substitute value is stored as adaptation value (adaptation value for this potentiometer) and displayed in the corresponding measuring value block.
  • If the malfunction "Adaptation limit exceeded" is displayed, check whether flap reaches both end stops and that there is no excessive play in the operating levers (wear).
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00735 Recirculation Flap Motor Position Sensor G143 in Recirculation Flap Motor V113    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit, open circuit in wiring or wiring malfunction between Recirculation Flap Motor Position Sensor G143 and operating and display module, Climatronic Control Module J255
  • Use wiring diagram to locate and eliminate short circuit, open circuit in wiring or wiring malfunction
   
  • Recirculation Flap Motor Position Sensor G143 in Recirculation Flap Motor V113 defective
  • Replace Recirculation Flap Motor V113
 
  • Adaptation limit exceeded
  • Recirculated-air flap stiff (left-hand drive vehicles)
  • Check freedom of movement of recirculated-air flap.
       
   
  • Recirculation Flap Motor Position Sensor G143 in Recirculation Flap Motor V113 defective
  • Replace Recirculation Flap Motor V113
NOTE:
  • The DTC "Adaptation limit exceeded" is only detected during basic setting. If this malfunction occurs, a substitute value is stored as adaptation value (adaptation value for this potentiometer) and displayed in the corresponding measuring value block.
  • If the malfunction "Adaptation limit exceeded" is displayed, check whether flap reaches both end stops and that there is no excessive play in the operating levers (wear).
  • The Recirculation Flap Motor V113 only moves the recirculated-air flap. The air flow/fresh-air flaps are moved by the Air Flow Flap Motor V71.
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00756 Left Vent Temperature Sensor G150    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit or open circuit in wiring between Left Vent Temperature Sensor G150 and operating and display module, Climatronic Control Module J255
  • Left Vent Temperature Sensor G150 defective
00757 Right Vent Temperature Sensor G151    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit or open circuit in wiring between Right Vent Temperature Sensor G151 and operating and display module, Climatronic Control Module J255
  • Right Vent Temperature Sensor G151 defective
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00785 Instrument Panel Interior Temperature Sensor G56    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Instrument Panel Interior Temperature Sensor G56 defective
NOTE:
  • The Instrument Panel Interior Temperature Sensor G56 is installed in the operating and display module, Climatronic Control Module J255. The Instrument Panel Interior Temperature Sensor G56 cannot be checked and replaced separately. In the event of a malfunction, the entire operating and display module, Climatronic Control Module J255 must be replaced.
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00787 Fresh Air Intake Duct Temperature Sensor G89    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit or open circuit in wiring between Fresh Air Intake Duct Temperature Sensor G89 and operating and display module, Climatronic Control Module J255
  • Fresh Air Intake Duct Temperature Sensor G89 defective
00796 Interior Temperature Sensor Fan V42 (instrument panel)    
 
  • RPM deviation too great
  • Interior Temperature Sensor Fan V42
NOTE:
  • The Interior Temperature Sensor Fan V42 is installed in the operating and display module, Climatronic Control Module J255. The Interior Temperature Sensor Fan V42 cannot be checked and replaced separately. In the event of a malfunction, the entire operating and display module, Climatronic Control Module J255 must be replaced.
  • The RPM measured by the operating and display module, Climatronic Control Module J255 for the Interior Temperature Sensor Fan V42 is displayed in the measuring value block (display group "011") → Read Measuring Value Block (function 08) .
  • In the case of an operating and display module, Climatronic Control Module J255 up to hardware/software version "0203", the type of malfunction displayed for the Interior Temperature Sensor Fan V42 may also be "Blocked or no voltage" or "Signal outside tolerance". The malfunction with these operating and display modules, Climatronic Control Module J255 is the same as for the malfunction "RPM deviation too great".
  • In the event of a malfunction at the Interior Temperature Sensor Fan V42, a temperature greater than 30 °C may be indicated or set on the display of the operating and display module, Climatronic Control Module J255. At the same time, the operating and display module, Climatronic Control Module J255 switches to outlet air flow control, as the temperature in the passenger compartment can no longer be measured.
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00797 Sunlight Photo Sensor G107    
 
  • Short to positive/SP
  • Open circuit/short to Ground (GND)/SP
  • Short circuit or open circuit in wiring between Sunlight Photo Sensor G107 and operating and display module, Climatronic Control Module J255
  • Sunlight Photo Sensor G107 defective
  • Use wiring diagram to locate and eliminate short circuit or open circuit in wiring
  • Check Sunlight Photo Sensor G107 (reading measuring value block, display group "016") → Read Measuring Value Block (function 08) 
NOTE:
  • The Sunlight Photo Sensor G107 has two phototransistors (one each for drivers and front passengers side).
  • There are different versions of the operating and display module, Climatronic Control Module J255 and the Sunlight Photo Sensor G107. Attention must therefore be paid to the exact assignment when replacing an operating and display module .
  • As of VIN 400000 in Model Year 2005 (for Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN ), vehicles are to be installed with a modified Sunlight Photo Sensor G107 and a modified operating and display module, Climatronic Control Module J255. Operating and display units, Climatronic Control Module J255 with part No. index up to "AH" are only to be installed with the Sunlight Photo Sensor G107 with part No. 8E0 907 539. Operating and display units, Climatronic Control Module J255 with part No. index "AJ" onwards are only to be installed with the Sunlight Photo Sensor G107 with part No. 8P0 907 539 .
  • In the event of incorrect assignment between the Sunlight Photo Sensor G107 and the operating and display module, Climatronic Control Module J255, the operating and display module, Climatronic Control Module J255 cannot evaluate the signal from the Sunlight Photo Sensor G107 and there will be problems with air conditioner control (reading measuring value block, display group "016") → Read Measuring Value Block (function 08) .
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00818 Evaporator Vent Temperature Sensor G263    
 
  • Short to Ground (GND)/SP
  • Open circuit/short to positive/SP
  • Short circuit or open circuit in wiring between Evaporator Vent Temperature Sensor G263 and operating and display module, Climatronic Control Module J255
  • Evaporator Vent Temperature Sensor G263 defective
NOTE:
  • If a malfunction is detected at the Evaporator Vent Temperature Sensor G263, the operating and display module, Climatronic Control Module J255 switches to emergency operation and the A/C Compressor Regulator Valve N280 is then only activated with a maximum control current of at present approx. 0.3 A to 0.5 A. This reduces the cooling output of the air conditioner and adequate cooling is no longer achieved at higher temperatures (reading measuring value block, display groups "001" and "002") → Read Measuring Value Block (function 08) .
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00819 High Pressure Sensor G65    
 
  • Short to Ground (GND)/SP
  • Duty cycle 5% or lower
  • Open circuit/short to positive/SP
  • Duty cycle 95% or higher
  • Short circuit or open circuit in wiring between High Pressure Sensor G65 and operating and display module, Climatronic Control Module J255
  • High Pressure Sensor G65 defective
 
  • Signal too small/SP
  • Duty cycle less than 12% and greater than 5%
  • Open circuit in power supply or Ground (GND) connection to High Pressure Sensor G65
  • Use wiring diagram to locate and eliminate open circuit
   
  • High Pressure Sensor G65 defective
   
  • Not enough refrigerant in refrigerant circuit
Continued in next table    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00819 (continued)    
 
  • Signal too large/SP
  • Duty cycle greater than 92% and less than 95%
  • High Pressure Sensor G65 defective
   
  • Malfunction in activation of Coolant Fan V7
   
  • Too much refrigerant in refrigerant circuit
NOTE:
  • The duty cycle transmitted by the High Pressure Sensor G65 is displayed in the measuring value block (display group "001") → Read Measuring Value Block (function 08) 
  • The ambient conditions under which the pressure in the refrigerant circuit was last not OK are displayed in the measuring value block (display groups "026" and "027") → Read Measuring Value Block (function 08) 
  • The operating and display module, Climatronic Control Module J255 switches automatically to "ECON" mode if the pressure measured by the High Pressure Sensor G65 is too low or too high (the compressor must not be switched on) → Read Measuring Value Block (function 08) .
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00825 Drivers Seat Heating Element Z6    
 
  • Output does not switch/short to positive/SP
  • Short circuit or open circuit in Drivers Seat Heating Element Z6 in Ground (GND) connection to Drivers Seat Heating Element Z6 or in connection between Drivers Seat Heating Element Z6 and operating and display module, Climatronic Control Module J255
  • Open circuit in Ground (GND) connection of Drivers Seat Heating Element Z6
  • Drivers Seat Heating Element Z6 defective
  • Use wiring diagram to locate and eliminate short circuit or open circuit in wiring
  • Check activation and resistance values of Drivers Seat Heating Element Z6 → Heated seats, testing 
Continued in next table    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00825 (continued)    
 
  • Output does not switch/short to Ground (GND)/SP
  • Short (to Ground (GND)) between Drivers Seat Heating Element Z6 and operating and display module, Climatronic Control Module J255
  • Open circuit in power supply to connector "F" at operating and display module, Climatronic Control Module J255
  • Drivers Seat Heating Element Z6 defective
  • Use wiring diagram to locate and eliminate short circuit
  • Use wiring diagram to locate and eliminate open circuit
NOTE:
  • In the case of an operating and display module, Climatronic Control Module J255 up to hardware/software version "0203", the type of malfunction displayed for the Drivers Seat Heating Element Z6 may also be "Open circuit". The malfunction with these operating and display modules, Climatronic Control Module J255 is the same as for the malfunction "Output does not switch/short to positive".
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00826 Front Passengers Seat Heating Element Z8    
 
  • Output does not switch/short to positive/SP
  • Short circuit or open circuit in Front Passengers Seat Heating Element Z8 in Ground (GND) connection to Front Passengers Seat Heating Element Z8 or in connection between Front Passengers Seat Heating Element Z8 and operating and display module, Climatronic Control Module J255
  • Open circuit in Ground (GND) connection of Front Passengers Seat Heating Element Z8
  • Front Passengers Seat Heating Element Z8 defective
  • Use wiring diagram to locate and eliminate short circuit or open circuit in wiring
  • Check activation and resistance values of Front Passengers Seat Heating Element Z8 → Heated seats, testing 
Continued in next table    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00826 (continued)    
 
  • Output does not switch/short to Ground (GND)/SP
  • Short (to Ground (GND)) between Front Passengers Seat Heating Element Z8 and operating and display module, Climatronic Control Module J255
  • Open circuit in power supply to connector "F" at operating and display module, Climatronic Control Module J255
  • Front Passengers Seat Heating Element Z8 defective
  • Use wiring diagram to locate and eliminate short circuit
  • Use wiring diagram to locate and eliminate open circuit
  • Check activation and resistance values of Front Passengers Seat Heating Element Z8 → Heated seats, testing 
NOTE:
  • In the case of an operating and display module, Climatronic Control Module J255 up to hardware/software version "0203", the type of malfunction displayed for the Front Passengers Seat Heating Element Z8 may also be "Open circuit". The malfunction with these operating and display modules, Climatronic Control Module J255 is the same as for the malfunction "Output does not switch/short to positive".
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00830 Convertible Top Control Module J256    
 
  • No communication/SP
  • Operating and display unit, Climatronic Control Module J255 not coded as specified (operating and display module, Climatronic Control Module J255 in Saloon or Avant coded for Cabrio).
   
  • Malfunction affecting data output in Convertible Top Control Module J256 or in a component connected to it.
  • Check DTC memory of Convertible Top Control Module J256 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
   
  • No data transmitted by Convertible Top Control Module J256.
  • The operating and display module, Climatronic Control Module J255 cannot read the data transmitted by the Convertible Top Control Module J256.
   
  • Interruption of voltage to Convertible Top Control Module J256 with ignition switched on.
  • check and erase DTC memories of all control units connected to CAN-Bus comfort system "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
Continued in next table    
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00830 (continued)    
 
  • No communication/SP
  • Open circuit in both signal wires (CAN-Bus system) between Convertible Top Control Module J256 and operating and display module, Climatronic Control Module J255
  • Use wiring diagram to locate and eliminate open circuit or loose contact at both signal wires (CAN-Bus system) between Convertible Top Control Module J256 and operating and display module, Climatronic Control Module J255
  • Check CAN-Bus comfort system → CAN-Bus comfort system, checking .
 
  • Check DTC memory
  • The Convertible Top Control Module J256 cannot output the required data because of a malfunction and sets a malfunction.
  • The Convertible Top Control Module J256 cannot output the required data because of a malfunction in an upstream component and sets a malfunction.
  • Check DTC memory of Convertible Top Control Module J256 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
  • Determine and eliminate the causes of all DTCs in the DTC memory of the Convertible Top Control Module J256.
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00975 Heated Rear Window Z1    
Vehicles up to VIN 399999 in Model Year 2005 (Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN )
 
  • Output does not switch/short to positive/SP
  • Short circuit or open circuit in Heated Rear Window Z1 in Ground (GND) connection to Heated Rear Window Z1 or in connection between Heated Rear Window Z1 and operating and display module, Climatronic Control Module J255
  • Open circuit in power supply to connector "F" at operating and display module, Climatronic Control Module J255
  • Heated Rear Window Z1 defective
  • Use wiring diagram to locate and eliminate short circuit or open circuit in wiring
  • Use wiring diagram to locate and eliminate open circuit
 
  • Output does not switch/short to Ground (GND)/SP
  • Short (to Ground (GND)) between Heated Rear Window Z1 and operating and display module, Climatronic Control Module J255
  • Open circuit in power supply to connector "F" at operating and display module, Climatronic Control Module J255
  • Heated Rear Window Z1 defective
  • Use wiring diagram to locate and eliminate short circuit
  • Use wiring diagram to locate and eliminate open circuit
NOTE:
  • On vehicles up to VIN 399999 in Model Year 2005 (Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN ), the Heated Rear Window Z1 is activated directly by the operating and display module, Climatronic Control Module J255 (the relay for switching the current is installed in the operating and display module, Climatronic Control Module J255).
  • On vehicles as of VIN 400000 in Model Year 2005 (Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN ), the Heated Rear Window Z1 will no longer be activated directly by the operating and display module, Climatronic Control Module J255 (operating and display modules, Climatronic Control Module J255 with part No. index "AJ" onwards are no longer installed with a relay). On these vehicles, the Heated Rear Window Z1 is activated via the Rear Window Defogger Relay J9.
  • In the case of operating and display modules, Climatronic Control Module J255 up to hardware/software version "0203", the type of malfunction displayed for the Heated Rear Window Z1 may also be "Open circuit". The malfunction with these operating and display modules, Climatronic Control Module J255 is the same as for the malfunction "Output does not switch/short to positive".
Display on Diagnostic Operation System VAS 5051A and print output Possible cause Corrective action
00975 Heated Rear Window Z1    
Vehicles as of VIN 400000 in Model Year 2005 (Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN )
 
  • Output does not switch/short to positive/SP
  • Short circuit or open circuit in Rear Window Defogger Relay J9 in Ground (GND) connection to Rear Window Defogger Relay J9 or in connection between Rear Window Defogger Relay J9 and operating and display module, Climatronic Control Module J255
  • Open circuit in power supply to connector "F" at operating and display module, Climatronic Control Module J255
  • Rear Window Defogger Relay J9 defective
  • Use wiring diagram to locate and eliminate short circuit or open circuit in wiring
  • Use wiring diagram to locate and eliminate open circuit
 
  • Output does not switch/short to Ground (GND)/SP
  • Short (to Ground (GND)) between Rear Window Defogger Relay J9 and operating and display module, Climatronic Control Module J255
  • Open circuit in power supply to connector "F" at operating and display module, Climatronic Control Module J255
  • Rear Window Defogger Relay J9 defective
  • Use wiring diagram to locate and eliminate short circuit
  • Use wiring diagram to locate and eliminate open circuit
NOTE:
  • On vehicles up to VIN 399999 in Model Year 2005 (Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN ), the Heated Rear Window Z1 is activated directly by the operating and display module, Climatronic Control Module J255 (the relay for switching the current is installed in the operating and display module, Climatronic Control Module J255).
  • On vehicles as of VIN 400000 in Model Year 2005 (Saloon and Avant; gradual introduction for the Cabrio in week 46/04 without prior specification of any particular VIN ), the Heated Rear Window Z1 will no longer be activated directly by the operating and display module, Climatronic Control Module J255 (operating and display modules, Climatronic Control Module J255 with part No. index "AJ" onwards are no longer installed with a relay). On these vehicles, the Heated Rear Window Z1 is activated via the Rear Window Defogger Relay J9.
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