Changing a brake light switch on a Peugeot 106

The switch is located next to the brake pedal

Move the retaining tab away from the immobilizer box

and push back

to dislodge him

This step is not necessarily mandatory but it makes access easier.

disconnect the contactor plug by pulling upwards

and remove the switch by pulling upwards

it should come quite easily

It is not screwed on contrary to appearances; it is fitted with notches for adjustment which clip onto the white plastic washer.

compare the 2 parts

The contactor can be tested with a multimeter (continuity) if you use a used part

in the released position, the current must flow; there must be continuity between the 2 terminals of the contactor

in the pressed position, the current must not pass; there must be no continuity between the 2 terminals of the contactor

insert the switch by pressing it

plug in the socket by pressing it

to adjust, it is better to be 2: the moving part of the switch must be just flush with the brake pedal tab (in blue)

We want to make the brake lights come on as soon as we press the brake, even slightly. It will probably take several attempts.

test that everything is working correctly and fine-tune the settings if necessary (hence the interest in having two people: one person who adjusts inside the car, the other who tells him when the lights come on)

To reassemble the immobilizer box, we will slide its 2 plastic rails

along the plastic mounting tab

going from back to front (until locking)