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Frequently asked questions about cars and motorcycles
  1. Car
  2. :
  3. Jeep
  4. :
  5. Grand Cherokee
  6. : Check the brake pedal switch electrical system

Jeep Grand Cherokee - Video tutorial

Model: Jeep Grand Cherokee WH, WK, MK 3 - Years 2004-2010
Part: Gearbox
Operation: Check the brake pedal switch electrical system

On all cars equipped with automatic gearbox, it is necessary to press the brake pedal both to allow the engine to start and subsequently to engage the gears: if it happens then that pressing the brake pedal does not engage the gears and at the same time the rear brake lights do not come on, then focus on the brake pedal switch and its wiring. In any case it should be noted that near the gear lever there is a slot where it is possible to press to release the safety and then move the gear lever: think about the possibility of having to tow the car in case of breakdown. Therefore, to carry out the various checks it is certainly advisable to have access to the layout of the car system in order to be able to consult it and go directly to the source of the problem. The first thing to check is certainly the brake switch protection fuse: if it has blown and continues to blow while replacing it, then there is a probable short circuit; then start by removing the rear lights to isolate that part of the system; if the problem persists, check the wiring of the power socket of the brake switch and finally the switch itself, checking its operation with a tester. If everything is working, examine in detail the entire wiring diagram because it is likely that the fault lies in the wireless system of the ignition lock: this is a defect recognized by the parent company on many Jeep-Dodge-Chrysler models and that It was resolved free of charge even after the warranty expired.


Posted on 18 August 2023 by ScegliAuto



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