Brake light switch — replacement and adjustment (Opel Zafira A)

The brake light switch is mounted under the instrument panel on the brake pedal bracket. When the switch rod is recessed (the brake pedal is released) its contacts are open, and when the rod is extended (the brake pedal is pressed) — closed.

Replacement

1. Prepare the car for work (see "Preparing the car for maintenance and repair").

2. On the Astra model, turn the two clamps counterclockwise by 90°...



...and remove the cover by pulling it towards you.



On the Zafira model, we remove two fasteners by prying them up with a thin slotted screwdriver...



(Article published on the website opelbook)



...using a TORX T20 key, unscrew the two mounting screws...



...and remove the cover.



3. Using a screwdriver, remove the air duct holder retainer and remove the holder.



4. Remove the air duct.



5. Turn the switch 90° and remove it from the bracket.





6. Press the two clamps, disconnect the wiring harness connector and remove the brake light switch.



7. Install the brake light switch in the reverse order.

Adjustment

After installing the brake light switch, it must be adjusted so that the brake lights come on when the brake pedal free travel is selected, that is, before the actual braking begins.

If the brake lights are constantly on, you need to push the switch rod down by pressing on it (a click should be heard).



If the brake lights come on too late, the switch rod must be pulled out of the switch housing one or more clicks.





If the switch cannot be adjusted (the rod is not fixed in the required position), it should be replaced.