Level Control System Warning Lamps, Malfunction

Fig 1: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Warning lamps

Item	Designation
1	ASR/ESP Control Lamp K155
2	Brake Pad Wear Indicator Lamp K32
3	ABS Warning Lamp K47
4	Brake System Warning Lamp K118

ABS Warning Lamp K47

Fig 2: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

If ABS Warning 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 below 10 Volt

b - There is a malfunction in the ABS

CAUTION: The ABS system remains switched off during an ABS malfunction - b - , but the traditional brake system remains fully functional.

c - Since the last time the vehicle was started there was a temporary speed sensor malfunction.

In this case the ABS Warning Lamp K47 will go out after the engine is restarted and the vehicle speed exceeds 2.75 km/h.

d - The connection from instrument cluster to ABS control module (w/EDL) J104 is interrupted → Electrical Wiring Diagrams, Troubleshooting and Component Locations

e - ABS Warning Lamp K47 is faulty

Fig 3: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

ABS Warning Lamp K47 and Brake System Warning Lamp K118

If ABS Warning Lamp K47 - 3 - goes out but Brake System Warning Lamp K118 - 4 - lights up, the malfunction causes may be:

a - the brake fluid level is too low.

Three warning tones are audible after switching on the ignition.

b - There is a malfunction in the wiring to Warning light for brake system K118 → Electrical Wiring Diagrams, Troubleshooting and Component Locations.

If the ABS warning light K47 - 3 - and the Warning light for brake system K118 - 4 - both light up, the ABS system is defective. A change in braking behavior should be checked.

CAUTION: After ABS Warning Lamp K47 and Brake System Warning Lamp K118 light up, rear wheels may lock up prematurely when braking.

Fig 4: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

ASR/ESP Control Lamp K155

If the ASR/ESP Control Lamp K155 - 1 - does not turn off after the ignition is switched on and the test sequence is completed, the malfunction may be:

There is a malfunction present which only affects the ASR/ESP. The ABS/EDL and EBD safety systems are still completely functional → check DTC memory.

a - Short circuit to B+ in ASR/ESP Button E256.

b - a short circuit to ground in ASR/ESP Control Lamp K155 activation.

c - The connection from instrument cluster to contact 31 of ABS control module (w/EDL) J104 is interrupted.

d - the ASR/ESP system has been switched off via ASR/ESP Button E256.

If the ASR/ESP Control Lamp K155 blinks while driving, the ASR or ESP system is in regulating mode.

Fig 5: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

If the ASR/ESP Control Lamp K155 - 1 - did not light up during self-test, the following malfunction is present:

a - ASR/ESP Control Lamp K155 is faulty → perform electrical test

ABS Warning Lamp K47 and ASR/ESP Control Lamp K155

If the ABS warning light K47 - 3 - and the ASR/ESP control lamp K155 - 1 - do not turn off after the ignition is switched on and the test sequence is completed, the malfunction may be:

a - The voltage supply for the ABS system is below 10 volts and the vehicle speed is less than 12 km/h → Perform electrical test.

b - a short circuit to positive in ABS Warning Lamp K47 activation.

c - Short circuit to B+ in ASR/ESP Button E256.

Fig 6: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

ABS Warning Lamp K47 , Brake System Warning Lamp K118 and ASR/ESP Control Lamp K155

If ABS Warning Lamp K47 - 3 - , the ASR/ESP Control Lamp K155 , - 1 - and Brake System Warning Lamp K118 - 4 - do not go out, malfunction causes may be:

a - the voltage supply for the ABS system is below 10 volts and the vehicle speed is less than 12 km/h → Perform electrical test.

b - There is a malfunction in the hydraulic control module; ABS system is therefore not operating.

A change in raking behavior should be checked. The rear wheels can lock-up early when braking!

c - There was a dynamic wheel speed sensor malfunction during the last driving period.

In this case, the warning lamps automatically switch off after a new vehicle start once a speed of 2.75 km/h is exceeded. This requires that the malfunction does not occur again after the repair work and new test are performed.

Fig 7: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Brake System Warning Lamp K118

If the warning light for brake system K118 - 4 - does not go out after switching the ignition on, the malfunction may be:

a - The Foot operated parking brake is engaged.

b - the switch for the warning light for brake system K118 is faulty or incorrectly adjusted.

c - There is a malfunction in the wire routing → Perform electrical test.

The parking brake switch also informs the ABS control module (w/EDL) J104 whether the parking brake is set or not. When the parking brake pedal is set, the ESP control is negatively influenced.

Fig 8: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Brake Pad Wear Indicator Lamp K32

If Brake Pad Wear Indicator Lamp K32 - 2 - does not switch off 3 seconds after the ignition is switched on or if it lights up when vehicle is driven, it could be caused by the following malfunctions:

a - the brake pads are worn.

Check front and rear axle brake pads/linings. Replace worn brake pads/linings.

b - There is a malfunction in the wire routing. → Electrical Wiring Diagrams, Troubleshooting and Component Locations