Mercedes-Benz W202 handbrake adjustment and faults
How is the W202 handbrake adjusted?
1. Loosen the automatic adjuster under the rear seat with a hex key. 2. Adjust the shoes through the wheel bolt hole close to the drum or disc. 3. Tighten the cables from under the seat only after adjusting the shoes. 4. Pull the handbrake a few times so that the shoes centre. A cable that is too tight reduces grip. The brakes are safety-critical, so have a workshop check the result.
Why does the handbrake pedal not click or stay down?
Usually the plastic click tab or ratchet of the pedal mechanism has broken, or a small spring is missing from it. The pedal can still stay locked without the click. Also check the cables under the rear seat: if one side moves clearly less, the adjustment is uneven.
Why does the handbrake not release or the shoes drag?
The cause is often a seized actuating mechanism inside the drum. Clean the mechanism and check the parts. Grease can be sprayed at the base of the pin, but not on the braking surfaces. Shoe bolts that are too long can also wear the link and prevent it from returning.