Level Control System Indicator Lamps

WARNING: This page is about a different car, the 2007 Volkswagen Touareg, 2006 Volkswagen Touareg, 2005 Volkswagen Touareg, and 2004 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Warning Lamps

Fig 1: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Item	Designation
1	Anti-Slip Regulation (ASR)/Electronic Stabilization Program (ESP) control lamp -K155-
2	Brake pad wear indicator lamp -K32-
3	Anti-lock Brake System (ABS) warning lamp -K47-
4	Brake system warning lamp -K118-

ABS Warning Lamp

If the ABS warning lamp -3- does not go out after the ignition is turned on and the test sequence is complete, it could be caused by the following errors:

Fig 2: Level Control System Warning Lamps
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

a - Voltage supply is below 10 volts

b - There is a malfunction in the ABS

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 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/Electronic Differential Lock (EDL)) -J104- is interrupted. Refer to appropriate SYSTEMS WIRING DIAGRAM.

e - ABS warning lamp is faulty.

ABS Warning Lamp and Brake System Warning Lamp

Fig 3: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If the ABS warning lamp -3- goes out but the brake system warning lamp -4- lights up, the malfunctions causes may be:

a - The brake fluid level is too low.

Three warning tones will sound after turning on the ignition.

b - There is a malfunction in the wiring to brake system warning lamp. Refer to appropriate SYSTEMS WIRING DIAGRAM.

If the ABS warning lamp -3- and the brake system warning lamp -4- both light up, the ABS system is faulty. A change in braking behavior should be checked.

WARNING:

After the ABS warning lamp and brake system warning lamp light up, the rear wheels may lock prematurely when braking.

ASR/ESP Control Lamp

Fig 4: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If the ASR/ESP control lamp -1- does not turn off after the ignition is turned 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 Electronic Brake pressure Distribution (EBD) safety systems are still completely functional → check the Diagnostic Trouble Code (DTC) memory.

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

b - A short circuit to ground in ASR/ESP control lamp activation.

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

d - The ASR/ESP system has been turned off by the ASR/ESP button.

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

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

Fig 5: Level Control System Warning Lamps
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

a - ASR/ESP control lamp is faulty → perform a electrical test

ABS warning lamp and ASR/ESP control lamp

If the ABS warning lamp -3- and the ASR/ESP control lamp -1- do not turn off after the ignition is turned 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 a electrical test.

b - A short circuit to positive in the ASR/ESP control lamp activation.

Short circuit to B+ in ASR/ESP button.

ABS Warning Lamp, Brake System Warning Lamp and ASR/ESP Control Lamp

Fig 6: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If the ABS warning lamp -3-, ASR/ESP control lamp, -1- and brake system warning lamp -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 a electrical test.

b - There is a malfunction in the hydraulic control unit; the ABS is not working.

A change in braking behavior should be checked. The rear wheels can lockup 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.

Brake System Warning Lamp

Fig 7: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If the brake system warning lamp -4- does not go out after turning the ignition on, the malfunction may be:

a - Foot operated parking brake is engaged.

- The switch for the brake system warning lamp is faulty or incorrectly adjusted.

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

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

Brake Pad Wear Indicator Lamp

Fig 8: Level Control System Warning Lamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

If the brake pad wear indicator lamp -2- does not switch off 3 seconds after the ignition is turned on or if it lights up when the vehicle is driven, it could be caused by the following malfunctions:

a - The brake pads are worn.

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

b - There is a malfunction in the wire routing. Refer to appropriate SYSTEMS WIRING DIAGRAM.