1. Bulbs:
* Check the brake light bulbs themselves: This is the most common cause. Even if the tail lights work, the brake light filaments within the bulb may be burned out. Replace them with new bulbs of the correct wattage. Remember, there are usually two filaments in each bulb: one for the running light and one for the brake light.
2. Fuses:
* Check the fuse(s) for the brake lights: Consult your owner's manual to locate the fuse box and identify the fuse(s) responsible for the brake lights. A blown fuse will prevent the brake lights from working. Replace any blown fuses with fuses of the correct amperage.
3. Brake Light Switch:
* Inspect the brake light switch: This switch is usually located on the brake pedal assembly. It's a small switch that activates when you press the brake pedal. A faulty switch can prevent the brake lights from working, even if the bulbs and fuses are good. Testing involves checking for continuity with a multimeter when the brake pedal is pressed. Replacement is relatively inexpensive and straightforward.
4. Wiring:
* Check the wiring: Look for any broken, corroded, or loose wires in the brake light circuit. This often happens near the brake light switch, the taillight assemblies, or anywhere the wires are exposed. A visual inspection is important, but using a multimeter to check continuity in the circuit can pinpoint a wiring problem.
5. Brake Pedal Position Sensor (Some Models):
* Depending on the exact model and year of your Sebring, there might be a brake pedal position sensor that feeds information to the BCM (Body Control Module). If it's faulty, it could interrupt the brake light circuit. This is less likely than the switch, but worth considering if other checks fail.
6. Body Control Module (BCM):
* BCM malfunction: In rare cases, a malfunctioning BCM can cause the brake lights to fail. This is a more complex issue that usually requires professional diagnosis and potentially replacement of the BCM.
Troubleshooting Steps:
1. Start with the simplest: Check the bulbs first. They are the cheapest and easiest to replace.
2. Check the fuses: This is a quick and easy way to rule out a simple electrical problem.
3. Inspect the brake light switch: This is a common point of failure.
4. Visually inspect the wiring: Look for any obvious damage or corrosion.
5. Use a multimeter: If you have one, a multimeter is invaluable for testing the continuity of the brake light circuit. This will help pinpoint the exact location of the problem.
If you're not comfortable working on your car's electrical system, it's best to take it to a qualified mechanic for diagnosis and repair. Attempting repairs without proper knowledge could lead to further damage or injury.
