Electrical/electronic components and installing locations
1 - ABS hydraulic unit -N55-
- Located on left of engine compartment.
- The ABS hydraulic pump -V64- and the inlet/outlet valves in the hydraulic unit are checked by On Board Diagnostic (OBD)
- The ABS hydraulic pump -V64- and valve block must not be separated from one another
- Removing and installing
Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Hydraulic unit, brake booster/master cylinder - Assembly overview; Removing and installing control module and hydraulic control part
- When changing the hydraulic unit, always seal the old part with the plugs from the repair set Part No. 1H0 698 311 A
2 - ABS Control Module (w/EDL) -J104-
- Location: on hydraulic unit on left of engine compartment
- Checked by On Board Diagnostic (OBD)
- Checking the multi-pin connector to control module. Refer to Multi-pin connector with contact assignments
- Do not disconnect connector before successfully completing On Board Diagnostic (OBD). Switch ignition off before separating connection.
Vehicles with ABS/ESP only
- When the ABS Control Module (w/EDL) -J104- is replaced, a zero compensation must be performed
- Initiate basic setting. Refer to Basic setting, initiating , perform display group numbers 060, 063, 066 and 069
3 - Sender for Rotation Rate -G202-
- Vehicles with ABS/EDL/ASR/ESP only
- Location: Under instrument panel next to steering column
- Checked by OBD
- Can be checked via read measured value block. Refer to Measured value block, reading
- Observe installation instructions
Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ESP system
4 - Sensor for transverse acceleration -G200-
- Vehicles with ABS/EDL/ASR/ESP only
- Location: Under instrument panel next to steering column
- Checked by OBD
- Can be checked via read measured value block. Refer to Measured value block, reading
- Observe installation instructions
Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ESP system
- When the sensor for transverse acceleration -G200- is replaced, a zero compensation must be performed
- Initiate basic setting. Refer to Basic setting, initiating , perform display group number 063
5 - Longitudinal acceleration sensor -G251-
- Vehicles with 4MOTION only
- Location: On right A pillar at height of instrument panel
- Checked by OBD
- Can be checked via read measured value block. Refer to Measured value block, reading
- Observe installation instructions
Refer to 45 ANTI-LOCK BRAKE SYSTEM
- When the lateral acceleration sensor -G251- is replaced, a zero compensation must be performed
- Initiate basic setting. Refer to Basic setting, initiating , perform display group number 069
6 - ESP-Sensor unit -G419-, vehicles from 02.02
- Vehicles with ABS/EDL/ASR/ESP only
- Combined sensor for transverse acceleration -G200-, sender for rotation rate -G202- and longitudinal acceleration sensor1) -G251-
- Assembled together in one housing
- Checked electrically by On Board Diagnostic (OBD)
- Combined in one housing
- Can be checked via read measured value block. Refer to Measured value block, reading
- Observe installation instructions
Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ESP system
- When the ESP-sensor unit -G419- is replaced, a zero compensation must be performed
- Initiate basic setting. Refer to Basic setting, initiating , perform display group numbers 063 and 069
1) 4Motion vehicles with Haldex clutch only
7 - Sender 1 for brake booster -G201-
- Vehicles with ABS/EDL/ASR/ESP only
- Checked by OBD
- Can be checked via read measured value block. Refer to Measured value block, reading
- Removing and installing
Refer to 47 BRAKES - HYDRAULIC COMPONENTS ; Assembly overview: Brake booster/brake master cylinder for vehicles with ABS/EDL/ASR/ESP
- When the sender 1 for brake booster -G201- is replaced, a zero compensation must be performed
- Initiate basic setting. Refer to Basic setting, initiating , perform display group number 066
8 - Brake booster
9 - Steering angle sensor -G85-
- Vehicles with ABS/EDL/ASR/ESP only
- Location: On steering column between steering wheel and steering column switch.
- Checked by OBD
- Can be checked via read measured value block. Refer to Measured value block, reading
- Observe installation instructions
Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ESP system
- When the steering angle sensor -G85- is replaced, a zero compensation must be performed
- Introduce basic setting. Refer to Basic setting, initiating , perform display group number 060
10 - Brake system vacuum pump -V192-
- Not installed in all vehicles
- Location: left of subframe
- Checked by OBD in engine control module
- Removing and installing
Refer to 47 BRAKES - HYDRAULIC COMPONENTS ; Brake system vacuum pump -V192
- Checking
Refer to 47 BRAKES - HYDRAULIC COMPONENTS ; Brake system vacuum pump -V192
11 - Brake light switch -F-
- The brake light switch is open in the rest position;
- Can be checked via read measured value block. Refer to Measured value block, reading
- Adjusting
Refer to 46 BRAKES - MECHANICAL COMPONENTS ; Brake pedal - Assembly overview; Adjusting brake light switch
12 - Data Link Connector (DLC)
- Location: In center console below heating/air conditioning controls module
13 - Button for ASR/ESP -E256-
- Vehicles with ABS/EDL/ASR/ESP only
14 - ABS warning light -K47-
- Location: In the instrument cluster
Function: Refer to Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-
15 - Warning light for brake system -K118-
- Location: In the instrument cluster
Function: Refer to Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-
16 - ASR/ESP Control Lamp -K155-
- Location: In the instrument cluster
Function: Refer to Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-
17 - Right/left front ABS wheel speed sensor -G45-/-G47-
- Checked by OBD
- Before inserting the sensor clean the inner surface of the sensor mounting and coat with lubricating paste G 000 650
- When connecting the speed sensor wire make sure it is not twisted in the wheel housing
- Securing bolt tightening torque - 10 Nm (7.4 ft lb)
18 - Wheel hub with rotor for speed sensors
- Rotor and speed sensors for left front and right-hand sides are identical
- Removing and installing
Refer to 40 FRONT SUSPENSION ; Servicing front suspension; II - Servicing wheel bearings
19 - Right/left rear speed sensor -G44-/-G46-
- Checked by OBD
- Before inserting the sensor clean the inner surface of the sensor mounting and coat with lubricating paste G 000 650
- When connecting the speed sensor wire make sure it is not twisted in the wheel housing
- Securing bolt tightening torque - 10 Nm (7.4 ft lb)
20 - Wheel hub with rotor for speed sensors
- Rotor and speed sensors for left rear and right-hand sides are identical
- Removing and installing
Refer to 42 REAR SUSPENSION ; Servicing wheel bearings