* Low Brake Fluid: This is the most likely cause. Check your brake fluid reservoir (usually a clear plastic container near the master cylinder under the hood). If the fluid level is low, you have a leak somewhere in the system – a serious problem requiring immediate attention. Do not drive the vehicle until this is fixed.
* Brake System Malfunction: The blinking light might signify a more serious problem within the brake system itself, such as:
* ABS (Anti-lock Braking System) malfunction: The ABS module could be failing, or there might be a sensor issue. An ABS problem doesn't necessarily mean your brakes won't work, but it reduces their effectiveness.
* Brake light switch failure: This switch tells the car when the brake pedal is pressed. If it's faulty, it may send intermittent signals.
* Parking brake engaged: Make sure your parking brake is fully released.
* Faulty Brake Light Bulbs: While less likely to cause a *blinking* light, a blown brake light bulb can sometimes cause erratic behavior in the system. Check all brake lights (both taillights and the center high-mounted stop lamp (CHMSL), also called the third brake light).
* Wiring Issues: A short circuit, corroded connection, or damaged wiring in the brake system can also cause this issue.
What to Do:
1. Check the Brake Fluid Level Immediately: This is the most critical step. Low fluid means a leak, and driving with a leak is extremely dangerous.
2. Inspect Brake Lights: Make sure all brake lights are working correctly.
3. Check the Parking Brake: Ensure it's disengaged.
4. Consult a Repair Manual: A repair manual specific to your 2002 Jeep Wrangler will provide details on your brake system and troubleshooting steps.
5. Professional Diagnosis: If you're not comfortable troubleshooting brake systems yourself (and you shouldn't be if you're not mechanically inclined), take your Jeep to a qualified mechanic for a proper diagnosis and repair. Brake problems are a serious safety issue.
Do not ignore a blinking brake light. Driving with a malfunctioning brake system is extremely dangerous and could lead to an accident. Have it checked immediately.
