Abs And Esp Assembly Overview

1. 1 -Traction Control Indicator Lamp -K86-
   • Component location: inside the instrument cluster
   • It blinks when driving if ESP engages regularly.
   • It comes on as a function test when the ignition is started.
   • It comes on when the ignition is switched on and goes out after driving a short distance when the ESP performs a system-specified adaptation process on its sensors.
   • It comes on when the ESP or ASR system malfunctions.
   • It comes on if ESP is switched off.
   • It comes on if there is an ABS malfunction because the ESP system works together with ABS.
   • If the battery was disconnected and connected, the vehicle was started by jump starting or the battery is very low, the ESP performs an adaptation sequence on its sensors during the first several meters driven. The indicator light comes on for this. The indicator light goes out as soon as the adaptation process is completed.
   • If indicator light comes on immediately after starting engine, there is a system-directed shut down of the system In this case, ESP can be reactivated by switching ignition on and off. If the indicator light goes out, the system is completely functional again.
2. 2 - ABS Indicator Lamp -K47-
   • Component location: inside the instrument cluster
   • The indicator light comes on for several seconds when the ignition is switched on or the engine is started. The indicator light goes out after an automatic test has been completed.

     There is an ABS malfunction:

     • The indicator light does not come on when the ignition is switched on.
     • The indicator light goes out again after a few seconds
     • The indicator light comes on when driving.
   • The vehicle can still be braked with the standard brake system, that is, without ABS.
   • The ESP indicator light also comes on when there is an ABS malfunction.

     Malfunction in complete brake system.

   • If the ABS indicator light comes on together with the brake system indicator light, not only is the ABS faulty but it must be assumed that the brake system is as well.
   • If the brake system malfunctions, the symbol appears in the instrument cluster display.
3. 3 - Brake System Indicator Lamp -K118-
   • Location in instrument cluster in Driver Information System
   • If the indicator light blinks, there is a brake system malfunction.

     The brake system indicator light blinks when the brake fluid is too low, when there is a malfunction in the the ABS system or if the electro-mechanical parking brake is malfunctioning.

4. 4 - Steering Angle Sensor -G85- with ESP
   • Installed location: Installed in coil ring with slip ring on steering column Steering Angle Sensor -G85- .
   • Perform zero adjustment, using the Vehicle Diagnosis Tester.
5. 5 - Parking Brake Pressure Switch -F234-
   • Installed location: in the center console.
6. 6 - ESP Sensor Unit -G419-
   • Component location: under the center console extension.
   • Can be tested in "Guided Fault Finding" using the Vehicle Diagnosis Tester.
   • Follow the installation instructions. Refer to ESP Sensor Unit -G419- .
7. 7 - Rear Wheel Bearing/Wheel Bearing Unit
   • The ABS sensor ring is installed inside the wheel bearing unit.
8. 8 - Right Rear ABS Wheel Speed Sensor -G44- and Left Rear ABS Wheel Speed Sensor -G46-
   • Can be tested in "Guided Fault Finding" using the Vehicle Diagnosis Tester.
   • Removing and installing, refer to SPEED SENSOR ON REAR AXLE 
9. 9 - Diagnostic Connection
   • Installed location: Driver side footwell cover.
10. 10 -Front Wheel Bearing/Wheel Bearing Unit
    • The ABS sensor ring is installed inside the wheel bearing unit.
11. 11 -Right Front ABS Wheel Speed Sensor -G45- and Left Front ABS Wheel Speed Sensor -G47-
    • Can be tested in "Guided fault finding" using the Vehicle Diagnosis Tester.
    • Removing and installing, refer to SPEED SENSOR ON THE FRONT AXLE .
12. 12 -ABS Hydraulic Unit -N55- with ABS Control Module -J104-
    • The hydraulic control unit is comprised of the hydraulic unit and control unit.
    • Brake Pressure Sensor 1 -G201- is integrated inside the ABS Hydraulic Unit -N55- and can only be replaced together.
    • Do not disconnect the connector (42-pin) before successfully completing self-diagnosis. Turn off the ignition before disconnecting the connector.
    • Installed location: in left side of engine compartment.
    • Removing and installing. ABS Hydraulic Unit -N55- 
    • for removing and installing, RS 6 and S6, refer to ABS Hydraulic Unit -N55-, S6 AND RS 6 
13. 13 -Electrical Brake System Vacuum Pump -V192-
    • Removing and installing. ELECTRICAL Brake System Vacuum Pump -V192-
    • Removing and installing S6. Refer to ELECTRICAL Brake System Vacuum Pump -V192-, S6 .
      NOTE:

      On the RS 6, the engine must first be removed in order to remove and install the vacuum pump.

14. 14 -Brake Lamp Switch -F- and Brake Pedal Switch -F47- (Cruise Control)
    • Removing and installing. Brake Lamp Switch -F- .
    • Brake lamp sensor, new version, removing and installing. BRAKE LAMP SENSOR .
    • can be tested in "Guided Fault Finding" using the Vehicle Diagnosis Tester.
15. 15 -Tandem Brake Booster
    • Removing and installing, refer to BRAKE BOOSTER
16. 16 -Brake Fluid Level Warning Switch -F34-
17. 17 -ASR/ESP Button -E256-
    • Component location: inside the center console
18. 18 -Right Front Brake Pressure Sensor -G519-
    • Tightening specification 28 Nm.
    • Installed location: on the brake pipe distributor inside the engine compartment.
    • It may be necessary to replace the old version with the new version
      NOTE:

      If the old version of the pressure sensor (1J0) is installed, it will not be possible to bleed the brake system completely. Replace the pressure sensor with the new version (4F0).

    • Removing and installing.
19. 19 -Left Front Brake Pressure Sensor -G518-
    • Tightening specification 28 Nm.
    • Installed location: on the brake pipe distributor inside the engine compartment.
    • it may be necessary to replace the old version with the new version.
      NOTE:

      If the old version of the pressure sensor (1J0) is installed, it will not be possible to bleed the brake system completely. Replace the pressure sensor with the new version (4F0).

    • Removing and installing. Refer to Left Front Brake Pressure Sensor -G518- AND Right Front Brake Pressure Sensor -G519- .

Installed location is under the driver side footwell cover as shown.