SureTrack Real Fix: Can I Get Some Assistance Here?

Real Fixes from ShopKey’s SureTrack® expert information resource are documented issues from actual shop repair orders and community discussions. Read on to see how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free with the purchase of a current Snap-on® diagnostic software version or in our ShopKey Pro product.


Today’s vehicles are loaded with sensors to help you drive and park. These are part of what is now known as ADAS (Advanced Driver-Assistance Systems). One of the most common is parking assistance which helps you to avoid hitting obstacles while parking. Follow this Real Fix to see how a problem with the parking assistance system on a BMW 530xi was diagnosed and repaired.

Vehicle
2007 BMW 530xi 3.0L

Title
Code 9E39, Replaced Park Assist Sensor

Complaint
The customer states the park assist light is on.

Cause
Connected a scan tool and found code 9E39 – Lines, Front Center Left, Ultrasonic Sensor. With the vehicle in reverse, monitored live scan tool data and observed the park assist sensor parameter was erratic. Inspected the park assist sensor wiring harness and connector, but detected no obvious faults. With the ignition on and the engine off, used a multi-meter to check for the presence of voltage and ground at the park assist sensor connector and found both were present. Removed the park assist sensor and a visual inspection revealed the sensor was damaged.

Correction
Replaced the park assist sensor, cleared codes, performed a road test and verified the vehicle operated properly.


SureTrack® adds to the power of ShopKey Pro with an exclusive combination of expert knowledge and detailed parts replacement records, all wrapped in an interactive community. Designed to help automotive shops increase accuracy and efficiency from diagnosis to completed repair, the industry’s most comprehensive repair information resource is just a few clicks away.

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About the Author

Nick Taylor

Nick Taylor is the SureTrack Community Administrator and a Senior Applications Specialist at Mitchell 1 with over 25 years of experience with electronic repair data systems. Nick previously worked in the automotive dismantling and engine rebuilding industries.