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WM 870225 Symptom in Vehicle Interior - Complaint Regarding Memory Function of Rear Air-conditioning Control Unit and Noise Caused by Flaps on all Versions: Re-programming air-conditioning control unit (SY 122/17): Tools

WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
Designation Type Number Description  
PIWIS Tester 3 Special tool 9900  
G12890669Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Model year: 

as of 2014 up to 2018 

Information 

These symptom-based repair instructions replace the instructions dated January 29, 2018.

Changes/additions: 

Information 

These symptom-based repair instructions replace the instructions dated November 3, 2017.

Changes/additions: 

Model Line: 

Macan (95B) 

Equipment: 

3-zone Climatronic (I-no. 9AQ)

Subject: 

Air-conditioning control unit  (also control panel/switch console)

Symptom: 

When starting the vehicle, an unsuitable air conditioning setting is preset in the rear air-conditioning control unit  .

Only air conditioning settings from driver's key 1 are stored and applied to all other driver's keys.

Additionally, there may also be complaints about noises from the ventilation system  .

Cause: 

The last air conditioning settings from driver's keys 2-4 cannot be read out quickly enough.

The last stored setting from driver's key 1 is used.

Noises can occur if the minimum flap angle is too small.

Remedial Action: 

Re-program the air-conditioning control unit  by entering the campaign number  .

This increases the time allowed for reading out the driver's key.

Read out the part number of the existing air-conditioning control unit: 

Select → Control unit 'Overview'  → "Air conditioning"  control unit → press [F12] to continue → read off part number  .

  1. Air-conditioning control units (switch console) with one of the following part numbers  can be re-programmed by entering the campaign number:
    • 95B.907.040.AJ, 
    • 95B.907.040.AK  or
    • 95B.907.040.AL, 
    • 95B.907.040.AN  .
  2. If the part number of the existing air-conditioning control unit  (switch console) does not correspond to one of these part numbers  → replace air-conditioning control unit (switch console), see → 962755 REPLACING SWITCH CONSOLE .

Tools: 

PIWIS Tester 3 9900  with software version 37.250.020  (or higher) installed.

Battery Charger/Power Supply  - Suitable for AGM Type batteries, recommended current rating of 90A fixed voltage 13.5V to 14.5V.

Work Procedure: 

NOTE: Voltage drop
  • Risk of irreparable damage to control unit
  • Risk of damage to control unit
  • Fault entries in the control unit
  • Coding in the control unit is aborted
  • Malfunctions in control unit, even during programming

→ Before disconnecting the control unit, switch off ignition and remove ignition key.

→ Make sure that the power supply is not interrupted during programming.

→ Connect battery charger/power supply - Suitable for AGM Type batteries, recommended current rating of 90A fixed voltage 13.5V to 14.5V.

NOTE: Coding/programming will be aborted in the event of low-voltage.
  • Increased power consumption during diagnosis can cause a drop in voltage, which can result in one or more fault entries and abortion of the coding process.

→ Before commencing work, connect a suitable battery charger with a charging current of at least 90 A to the jump-start terminals in the engine compartment.

NOTE: Coding will be aborted if the WLAN connection is unstable.
  • An unstable WLAN connection can interrupt communication between PIWIS Tester 3 and the vehicle communication module (VCI). As a result, coding/programming may be aborted.
  1. Preliminary work: 
    1. 1.1. Connect a battery charger with a current rating of at least 90 A  .
    2. 1.2. Switch on the ignition using the original driver's key  . On vehicles with "Porsche Entry & Drive", do this by replacing the control unit in the ignition lock with the original driver's key if necessary.
    3. 1.3. PIWIS Tester 3 9900  with software version 37.250.020  (or higher) installed must be connected to the vehicle communication module (VCI) via the USB cable  . Then, connect the communication module to the vehicle and switch on the PIWIS Tester.
    4. 1.4. On the PIWIS Tester start screen, call up the → 'Diagnostics'  menu.

      The diagnostic application is then started and the control unit selection screen is populated.

  2. Re-program the air-conditioning control unit: 

    Information 

    The procedure described here is based on the PIWIS Tester 3 9900  software version 36.000  .

    The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the instructions that must be followed.

    A discrepancy may arise with later software versions for example.

      Menu → Control unit/Function → Action → confirm/execute
    • Instructions/information  or
    • → Result/consequence  of action
    2.1 Control units 'Overview'  'Air conditioning' control unit  select [F12]
    2.2 'Extended identifications'  Software version  read off  
      Software version:
    • 1350 or lower = old software version
    • 1360 = new software version 

    After programming, the software version is 1360.
    2.3 Control units 'Overview'  'Additional menu'  call up [F7]
    2.4 → Follow instructions: 
    • Create Vehicle Analysis Log (VAL) if necessary and
    • carry out any campaigns that are available for the vehicle.
    		 [Yes]/[No]/[F12]
    2.5   'Campaign'  select [F12]
    2.6 Campaign number Value: 'M7Y9Q'  enter [F12]
    Read and follow the information and instructions on the PIWIS Tester  during the guided programming sequence. Then press >> to continue.
    During the programming sequence, the control unit is re-programmed and then re-coded automatically if necessary.
    Do not interrupt programming and coding  .
    Once control unit programming - and coding if necessary - is complete, you will be prompted to switch the ignition off and then back on again after a specified waiting time.
    If programming is not completed successfully (error message "Programming unsuccessful"), programming must be repeated  .
  3. Subsequent work: 
    1. 3.1. Read out and erase all fault memories.

      Information 

      If there are still fault memory entries in individual control units, start the engine briefly and then switch it off again. Wait for approx. 10 seconds before switching the ignition on again and re-establish the connection between the PIWIS Tester and the vehicle. Then read out and erase the fault memories of the affected control units again separately.

    2. 3.2.
    3. 3.3. Switch off the ignition.
    4. 3.4. Disconnect the PIWIS Tester from the vehicle.
    5. 3.5. For vehicles with Porsche "Entry & Drive", replace the original vehicle key in the ignition lock with the control panel again.
    6. 3.6. Switch off and disconnect the battery charger.

    End  of action required.

    Invoicing: 

    The work involved is invoiced under the labor operation:

    96275500 b) Replacing switch console -
    87022580 a) Programming air conditioning control -

    For invoicing and documentation using PQIS, enter the following coding:

      87020 Air-conditioning system control
      1614 Function not as specified

    References: 

    → 962755 REPLACING SWITCH CONSOLE

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