Your anti-lock braking system (ABS) prevents your wheels from locking up when you brake. This helps the tires maintain contact with the road surface, giving you more control over your vehicle.

How an ABS System Works

Sensors on each wheel detect when a wheel stops moving and starts to skid. The system reacts by releasing and then reapplying (or "pumping") the brakes rapidly to stop the skidding and maintain command.

The Parts of An ABS System

There are four major components of the typical anti-lock braking system. The speed sensors monitor how quickly the wheels are rotating. Valves in the brake line allow, block, or release brake pressure. The pump delivers that pressure to the calipers in the form of a hydraulic fluid. The electronic control unit (ECU) acts as the brains of the system. It interprets data from the sensors to determine when to pump the brakes or not.

How to Spot ABS System Problems

Even the best ABS system parts can go bad over time, though. Possible causes include a blown fuse, a sensor that's either damaged or covered in muck, a broken wire, or an ECU that's stopped working. Signs of trouble include:

• The ABS warning light stays on after you've started your vehicle
• Your brake pedal doesn't respond
• Your brakes lock up
• Needing to press harder on the brake pedal
• Your speedometer fails

Mopar® Makes the Best Parts for Your Vehicle

If you're experiencing any of these symptoms, have your ABS system checked by a professional to determine exactly what's wrong. When you need to replace a system component, look for the sure thing. That's a genuine Mopar® replacement. You know they fit and work right, since they're the parts made for your model's system. Order from our online auto parts department and enjoy convenient home delivery.