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Symptom Chart: Parking Aid

WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.
Condition Action
A module does not communicate with the diagnostic scan tool REFER to: Communications Network .
The audible parking aid is inoperative GO to Pinpoint Test A 
Continuous or intermittent tone when no obstacles or fault codes are present CLEAN the rear bumper and sensors with high-pressure water.
ALLOW time for the ice between the parking aid sensor(s) and bezel(s) to melt.
INSTALL the parking aid sensor(s) into the parking aid sensor bezel(s) correctly. For the rear sensors, For the front sensors,
CARRY OUT the elevation system check. REFER to: Elevation System Check .
INSTALL a new parking aid sensor. For the rear sensors, For the front sensors,
The parking aid audio tones are inoperative GO to Pinpoint Test A 
The Parking Aid Switch Status LED Is Inoperative Or Always On GO to Pinpoint Test J 
The parking aid disable switch is inoperative or does not operate correctly GO to Pinpoint Test K 
The parking aid menu is not available in the message center and cannot be deactivated The parking aid disable feature is not available when a MyKey® restricted key is in use. This is normal operation.