Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
ABS with Roll Stability Control (RSC®) and traction control
ABS with Roll Stability Control (RSC®) and traction control consists of the following components:
- ABS module
- HCU (LH side of the engine compartment, behind the degas bottle)
- Front wheel speed sensor
- Front wheel speed sensor ring (press fit onto the brake disc)
- Rear wheel speed sensor
- Rear wheel speed sensor ring (press fit onto the brake disc)
- Steering wheel rotation sensor (attached to the steering column)
The ABS prevents wheel lock-up by monitoring the wheel speed sensors and actuating the valves in the HCU which modulates the brake pressure to the brake calipers. By preventing the wheels from locking up, the driver is able to maintain steering control and stop in the shortest possible distance under most conditions. The traction control system utilizes the same components as the ABS to prevent wheel spin and help maintain vehicle control during acceleration. The RSC® system utilizes the same components as the ABS and the traction control systems and also monitors the steering wheel rotation sensor and the Restraints Control Module (RCM) to assist in stabilizing the vehicle during abrupt maneuvers.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.