The Precision All-Wheel Steer (P-AWS) system in your 2020 Acura TLX provides rear wheel steering that enhances agility at low speeds and stability at high speeds. When this system fails, you lose the benefits of active rear steering management.
P-AWS System Function
P-AWS actively steers the rear wheels. At low speeds during turns, rear wheels toe out slightly to help rotate the car. At highway speeds, rear wheels toe in with the fronts to enhance stability. This active management improves both handling and stability.
System Components
P-AWS includes the rear steering actuator at the rear suspension, control module, position sensors, and integration with stability control. The actuator adjusts rear toe in real-time based on driving conditions.
Failure Symptoms
P-AWS failure triggers dashboard warnings and disables active rear steering. You may notice less agile feel in tight turns (where rear steering helped) and different high-speed stability (where rear toe-in enhanced tracking). The system typically defaults to neutral rear toe.
Common Fault Causes
Faults can result from actuator issues, position sensor failures, communication errors with other vehicle systems, or control module problems. The rear location exposes components to road debris and moisture.
Fallback Operation
When P-AWS fails, the rear wheels return to a neutral position. Basic vehicle operation continues—the TLX handles like a conventional front-steer vehicle. The driving experience changes but remains safe.
Acura Code 62-11
Code 62-11 relates to the P-AWS system or related steering control. Acura diagnostic equipment provides detailed fault information for the specific failure.