Symptom Chart

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the parking aid module	Fuse Circuitry Parking aid module	GO to PINPOINT TEST A .
The parking aid is inoperative/does not operate correctly	Circuitry Parking aid sensor alignment Parking aid disable switch Parking aid module	GO to PINPOINT TEST B .
Continuous or intermittent tone when no obstacles or fault codes are present (certain obstacles may appear "stealthy" to the system, depending on geometric shape, size and material)	Dirty or iced over parking aid sensor(s)	CLEAN the rear bumper and sensors with high-pressure water.
	Parking aid sensor bezel(s) or parking aid sensor(s) locked into the rear bumper incorrectly	INSTALL the parking aid sensor bezel(s) into the rear bumper correctly. INSTALL the parking aid sensor(s) into the parking aid sensor bezel(s) correctly.
	Parking aid sensors are not aligned correctly	CARRY OUT the azimuth check. REFER to AZIMUTH SYSTEM CHECK Minimum Detectable Object Locations. GO to PINPOINT TEST E .