* Parking Brake Cable Problem: This is the most common cause. The cable might be stuck, frayed, or improperly adjusted. It may not be fully releasing the brake mechanism at the rear wheels.
* Parking Brake Switch Issue: The switch that tells the car the parking brake is engaged might be faulty. It could be stuck in the "on" position, even when the lever is released. This is a relatively easy and inexpensive part to replace.
* Low Brake Fluid: While seemingly unrelated, a low brake fluid level can trigger the parking brake light as a safety measure. Check your brake fluid reservoir.
* Brake System Malfunction: A more serious issue could be a problem within the braking system itself, like a faulty sensor or a problem with the anti-lock braking system (ABS). This often triggers multiple warning lights.
* Electrical Short or Wiring Problem: A short circuit in the wiring related to the parking brake system can cause the light to stay on. This is a less common but difficult to diagnose problem.
* Brake Master Cylinder: A failing master cylinder could also contribute to issues with brake pressure and cause the light to remain illuminated.
Troubleshooting Steps:
1. Visually Inspect the Parking Brake: Carefully check the parking brake lever to make sure it's fully released. Try gently rocking the van back and forth to see if the brakes are releasing.
2. Check Brake Fluid Level: Locate the brake fluid reservoir (usually a clear container) and check the fluid level. It should be between the minimum and maximum lines. Low fluid indicates a leak somewhere in the brake system which needs immediate attention.
3. Test the Parking Brake Switch: This is usually located near the parking brake lever. It might require some disassembly to access it. A malfunctioning switch is a common culprit.
4. Check for OBD Codes: Use an OBD-II code reader to scan for any diagnostic trouble codes (DTCs). These codes can help pinpoint the specific problem. Auto parts stores often provide this service for free.
If you're not comfortable performing these checks yourself, it's best to take your Caravan to a qualified mechanic. Ignoring a persistent parking brake light can be unsafe, as it may indicate a more significant problem with your braking system.
