Diagnosis And Testing - Park Assist System
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbags, airbag curtains, knee blocker, seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect the Intelligent Battery Sensor (IBS)/negative battery cable assembly from the negative battery post, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
A Park Assist warning icon or textual message may appear within the Instrument Panel Clusters (IPC). If a warning appears on the IPC and the condition is related to the Park Assist system; be certain to confirm the following:
- Be certain that the fascia is free of dirt and debris to keep the system operating properly. The Park Assist system is self correcting, verify that the area of the fascia where the sensors are located (both the face and the back) is not blocked by ice, snow, mud or other obstructions. If the area is blocked, remove the blockage, shift the transmission selector lever into R everse and verify the warning is no longer present on the IPC display.
- Be certain that the parking brake is not applied.
- The presence of operating heavy construction equipment, large trucks and other vibrations in the vicinity of the vehicle could impact the performance of the Park Assist system.
- Verify the park assist sensors are properly seated. A loose sensor can prompt a warning to wipe the sensor or a warning that the sensors are blocked. This condition may not set a Diagnostic Trouble Code (DTC).