Level Control System Indicator Lamps: Abs/ASR

Warning lamps on North America vehicles:

Fig 1: Identifying Control Systems Indicator Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Item	Designation
1	Brake System Indicator Lamp -K118-
2	Traction Control Indicator Lamp -K86-
3	ABS Indicator Lamp -K47-

ABS Indicator Lamp -K47-

Fig 2: Identifying Control Systems Indicator Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If ABS Indicator Lamp -K47- -3- does not go out after the ignition is switched on and the test sequence is complete, it could be caused by the following errors:

-a- Voltage supply is under 10 volts.

-b- There is an ABS malfunction, refer to Vehicle Diagnostic Tester.

WARNING:

The anti-locking brake system remains switched off with an ABS malfunction -3-, but the brake system remains fully operational.

-c- there was a malfunction since the last time the vehicle was started.

In this case the ABS indicator lamp will go out after the engine is restarted and the vehicle speed exceeds 20 km/h.

-d- There is an open circuit from the instrument cluster to the ABS Control Module -J104-, refer to the Wiring Diagrams.

-e- the instrument cluster is faulty.

If the ABS Indicator Lamp -K47- -3- does not light up during the self-test, check the instrument cluster → perform an electrical test, refer to the Vehicle Diagnostic Tester.

ABS Indicator Lamp -K47- and Brake System Indicator Lamp -K118-

Fig 3: Identifying Control Systems Indicator Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If ABS Indicator Lamp -K47- -3- goes out but Brake System Indicator Lamp -K118- -1- lights up, the malfunction causes may be:

-a- parking brake is engaged.

-b- brake fluid level is too low (warning lamp blinks).

Three warning tones will sound after switching on the ignition.

-c- There is a malfunction in the wiring to the Brake System Indicator Lamp -K118-, refer to the Wiring Diagrams/Component Locations.

If the ABS Indicator Lamp -K47- -3- and the Brake System Indicator Lamp -K118- -1- both light up, the ABS system is faulty. A change in braking behavior should be checked.

WARNING:

After ABS Indicator Lamp -K47- and Brake System Indicator Lamp -K118- light up, rear wheels may lock prematurely when braking.

Traction Control Indicator Lamp -K86-

Fig 4: Identifying Control Systems Indicator Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If the Traction Control Indicator Lamp -K86- -2- does not go out after the ignition is switched on and the test sequence is complete, the cause of the malfunction may be:

-a- A malfunction in the actuation of Traction Control Indicator Lamp -K86-, refer to the Wiring Diagrams and the Vehicle Diagnostic Tester.

ASR malfunction. The ABS still works. Vehicle Diagnostic Tester Check the event memory.

NOTE:

If the Traction Control Indicator Lamp -K86- blinks while driving, ASR system is operating in regulated mode.

If the Traction Control Indicator Lamp -K86- -2- does not light up during the self-test, check the instrument cluster → perform an electrical test, refer to the Vehicle Diagnostic Tester.