ABS Mark 70 (ABS/ASR)
Electrical and Electronic Components and Locations
1 Anti-lock Brake System (ABS) control module (w/Electronic Differential Lock (EDL)) (J104)
• Component location: On the hydraulic unit in the right side of the engine compartment.
• Can be checked in "Guided Fault Finding" using the (VAS 5051).
• Do not disconnect the connector before successfully completing the On Board Diagnostic (OBD). Turn the ignition off before disconnecting connector.
• Removing and installing, refer to --> [ Control Module and Hydraulic Unit ] Service and Repair.
2 ABS hydraulic unit (N55)
• Component location: In the engine compartment, on the right side.
The hydraulic unit consists of the following component:
• ABS hydraulic pump.
• Can be checked in "Guided Fault Finding" using the (VAS 5051).
• Valve block (contains inlet and outlet valves).
• ABS hydraulic pump and valve block must not be separated from each other.
• Removing and installing, refer to --> [ Control Module and Hydraulic Unit ] Service and Repair.
3 Brake pad wear indicator lamp (K32)
• Component location: In the instrument cluster.
• Function, refer to --> [ Level Control System Indicator Lamps ] Level Control System Indicator Lamps.
4 ABS warning lamp (K47)
• Component location: In the instrument cluster.
• Function, refer to --> [ Level Control System Indicator Lamps ] Level Control System Indicator Lamps.
5 Traction control indicator lamp (K86)
• Component location: In the instrument cluster.
• Function, refer to --> [ Level Control System Indicator Lamps ] Level Control System Indicator Lamps.
6 Brake system warning lamp (K118)
• Component location: In the instrument cluster.
• Function, refer to --> [ Level Control System Indicator Lamps ] Level Control System Indicator Lamps.
7 Brake light switch (F) through 12.09.05
• Includes the brake pedal switch
• Component location: On the brake pedal.
8 Brake light switch (F) from 12.11.05
• Includes the brake pedal switch.
• Component location: On the master cylinder.
• Removing and installing, refer to --> [ Brake Light Switch, from 12.11.05 ] Brake Light Switch, from 12.11.05.
9 Anti-Slip Regulation (ASR)/ Electronic Stabilization Program (ESP) button (E256)
• Component location: In the center console.
10 Data Link Connection (DLC)
• Component location: Cover in driver footwell.
11 Right front wheel speed sensor (G45)/left front wheel speed sensor (G47)
• Can be checked in "Guided Fault Finding" using the (VAS 5051).
• Removing and installing, refer to --> [ Front ABS Components Assembly Overview ] Front ABS Components Assembly Overview.
12 Wheel bearing housing
13 Wheel bearing/hub unit
• The ABS sensor ring is installed in the wheel bearing.
14 Right rear wheel speed sensor (G44)/left rear wheel speed sensor (G46)
• Can be checked in "Guided Fault Finding" using the (VAS 5051).
• Removing and installing, refer to --> [ Rear ABS Components Assembly Overview ] Rear ABS Components Assembly Overview.
15 Rear axle body with stub axle
16 Wheel hub with wheel bearing
• The ABS sensor ring is installed in the wheel bearing.