VW Passat & Audi A4 1990-2000

Brake Light Switch

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The brake light switch is located at near the pivot point of the brake pedal. When the brake pedal is pressed down the actuating plunger of the brake light switch is released and completes the electrical circuit to operate the brakes lights. When the brake pedal is released, the pedal's shaft should press against the brake light switch plunger, and if properly adjusted, it should "open" the brake light switch circuit.

REMOVAL & INSTALLATION
1990-97 Passat models
  1. Remove the lower dashboard trim to access the brake light switch.
  2.  
  3. Pull the wire connectors off the switch.
  4.  
  5. Turn the switch clockwise 90° ( 1 / 4 turn) and pull the switch out.
  6.  
  7. Pull the brake switch plunger fully out.
  8.  

To install:

  1. Depress and hold the brake pedal down by hand and guide the switch through the hole, then turn the switch counterclockwise 90° ( 1 / 4 turn) and release the brake pedal.
  2.  
  3. Grasp the brake pedal and pull back on it until the pedal is resting on the pedal stops.
  4.  
  5. The balance of the installation is in reverse order of removal.
  6.  

A4 And 1998-00 Passat Models
  1. Remove the lower dashboard trim to access the brake light switch.
  2.  
  3. Pull the wire connectors off the switch.
  4.  
  5. Loosen and remove the switch locknut, then pull the switch out of the holder.
  6.  
  7. The balance of the installation is in reverse order of removal.
  8.  

ADJUSTMENT
1990-97 Passat models
  1. Remove the lower dashboard trim to access the brake light switch.
  2.  
  3. Depress and hold the brake pedal down by hand then turn the switch clockwise 90° ( 1 / 4 turn) and press the switch in then turn it counterclockwise 90° ( 1 / 4 turn) and release the brake pedal.
  4.  
  5. Turn the switch clockwise 90° ( 1 / 4 turn) and press the switch in.
  6.  
  7. Pull the brake switch plunger fully out.
  8.  
  9. Grasp the brake pedal and pull back on it until the pedal is resting on the pedal stops.
  10.  

A4 And 1998-00 Passat Models
  1. Remove the lower dashboard trim to access the brake light switch.
  2.  
  3. Loosen the switch locknuts.
  4.  
  5. Press and hold the brake pedal down by hand and check the clearance between the pedal and the plunger. The clearance should be 0.004-0.020 inches (0.1-0.5mm).
  6.  
  7. If necessary loosen the locknuts and adjust the switch.
  8.  

 
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