ABS/ESP Bosch 5.3 Assembly Overview
ABS/ESP Bosch 5.3 assembly overview
1. Electronic stabilization program hydraulic pump for traction control -V156- only with ESP
2. Sender 1 for brake booster -G201- in ESP pump (only with ESP)
3. ABS return flow pump relay -J105- for Bosch 5.3
4. ABS solenoid valve relay -J106- for Bosch 5.3
5. ABS hydraulic unit -N55- with ABS control module (w/EDL) -J104
^ The ABS hydraulic pump -V64-, the ABS hydraulic unit -N55- and the ABS Control Module (w/EDL) -J104- (for Bosch 5 3 only) form the hydraulic control unit.
6. Brake fluid level warning switch -F34
7. Rotor for right-front speed sensor
8. Right front ABS wheel speed sensor -G45
9. ABS control module (w/EDL) -J104- (with ESP)
^ Installation location: passenger footwell
10. Anti-Slip control switch -E132
^ Installation location: on the center console
11. Steering angle sensor -G85- (for vehicles with )ESP
^ Installation location: Installed on the steering column
12. Parking brake warning light switch -F9
^ Installation location: on the parking brake lever assembly
13. Rotor for right-rear speed sensor
14. Right rear ABS wheel speed sensor -G44
15. Left rear ABS wheel speed sensor -G46
16. Rotor for left-rear speed sensor
17. Sensor for transverse acceleration -G200
^ New design in a housing together with -G202
18. Sender for rotation rate -G202
19. ABS return flow pump relay -J105- for Bosch 5.3 only
^ Installation location: on fuse box
20. ABS solenoid valve relay -J106- for Bosch 5.3
21. Warning light for brake system -K118
^ Installation location: in the instrument cluster in the driver information system
22. ABS warning light -K47
^ Installation location: in instrument cluster
23. Parking brake indicator light -K14
^ Installation location: in instrument cluster
24. Traction control indicator light -K86
^ Installation location: in instrument cluster
25. Brake light switch -F
26. Rotor for left front speed sensor
27. Left front ABS wheel speed sensor -G47
New components:
The electronic stabilization program hydraulic pump for traction control -V156- and the sender 1 for brake booster -G201- are on the left side of the engine compartment beneath the ABS hydraulic unit - N55-.
The ABS hydraulic unit -N55- with ABS return flow pump -V39- are assisted by the Hydraulic pump for traction control -V156-. This enables the system to rapidly build up the required brake fluid pressure in the wheel brake cylinders.
Do not loosen the bolts securing the individual components of the ABS hydraulic unit -N55- and the Hydraulic pump for traction control -V156-. The Hydraulic pump for traction control -V156- and the Sender 1 for brake booster -G201- form a single unit and must always be replaced together if necessary.
The Sender 1 for brake booster -G201- measures the fluid pressure generated in the brake system.