Brake Lamp: Description and Operation

High-Mounted Brake Lamp (M25)

• Additional information:

Refer to Self Study Program No. 297; The Touareg.

Refer to Self Study Program No. 298; The Touareg Electrical System.

DTC Recognition and Display

Comfort system is equipped with On Board Diagnostics (OBD) which assists troubleshooting of additional brake lights.

For troubleshooting, use Vehicle Diagnostic, Testing and Information System (VAS 5051A) in operating mode "Guided Fault Finding".

• LED failure in high-mount brake lamps (not USA and Canada):

• Individual LEDs (Light Emitting Diodes) in auxiliary brake lights are combined into groups of up to four LEDs and are supplied with power as a group.

• The high-mount brake light is designed in such a way that it still meets the legal requirements of the ECE (Economic Commission for Europe) when one LED group fails. If another LED group fails, these legal requirements are no longer met.

• When one LED group fails, the intact LEDs are given a higher load, by which failure of other LED groups can be assumed in the near future.

• If more than four individual LEDs in auxiliary brake light have failed, the auxiliary brake light must be replaced (repair measure).