Your best approach is to consult your owner's manual. It will have a fuse box diagram showing which fuse(s) are related to the brake lights and taillights. Look for fuses labeled as:
* Brake Lights: This is the most direct label, but may not be present.
* Tail Lights: A blown tail light fuse *can* also prevent brake lights from working since they share some wiring.
* Stop Lamps: This is another term for brake lights.
Important Troubleshooting Steps:
1. Check the fuses: Carefully inspect all fuses related to tail lights and stop lamps in both fuse boxes (there's usually one under the hood and one inside the vehicle, often under the dash). Look for blown fuses (broken filament). Replace any blown fuses with the *correct amperage* fuse. Using a higher amperage fuse is dangerous and can cause a fire.
2. Check the brake light switch: This switch is located on the brake pedal assembly. It's a relatively inexpensive and easily accessible part. When you push the brake pedal, this switch closes the circuit, activating the brake lights. A faulty switch is a common cause of brake light failure. You may be able to test it with a multimeter if you're comfortable doing so (check online for instructions specific to your vehicle).
3. Check the bulbs: Even if the tail lights work, ensure all brake light bulbs are intact and functioning. A blown bulb is a simple fix.
4. Check the wiring: If all fuses and bulbs are good, there could be a break in the wiring somewhere between the brake light switch and the lights themselves. This requires more advanced electrical troubleshooting skills.
Safety Note: Before working with any electrical components, disconnect the negative battery terminal to prevent short circuits.
If you can't find the problem using these steps, it's best to take your Caravan to a qualified mechanic for diagnosis. Faulty brake lights are a safety hazard, so don't delay getting them fixed.
