Parking And Back-Up Sensor System Not Working, Acura MDX

2020 Acura MDX AWD V6-3.5L (J35Y5) Parking And Back-Up Sensor System Not Working

This MDX came in from a body shop after a rear-end collision damage repair, because the Parking and Back-Up Sensor System was not operating. Scanned the system and found DTC: B261C was present. Performed continuity on all circuits, after repairs and all, check out ok. Can hook up a scanner and communicate with the Parking and Back-up Sensor control module. When looking at PID's for rear sensors, it shows fault. The body shop had replaced the Left Rear Parking and Back-Up Sensor along with the sub-harness to the control unit.

Fix: Parking And Back-Up Sensor System Not Working, 2020 Acura MDX

There is a reset procedure to perform, after replacing any components for this system. Check out the procedure here:

Parking and Back-Up Sensor Control Unit - Reset

Reset the parking and back-up sensor control unit after doing any of the following actions:

• When you replace the parking and back-up sensor.
• When you change the parking and back-up sensor mounting location from the original location.

NOTE: Before performing the resetting procedure, make sure that each the parking and back-up sensor is connected.

Resetting Procedure

1. Turn the vehicle to the ON mode.
2. Press the parking and back-up sensor switch 10 times within 10 seconds. NOTE: Parking and back-up sensor switch indicator starts blinking.
3. Turn the vehicle to the OFF(LOCK) mode.
4. Press and hold the parking and back-up sensor switch.
5. Turn the vehicle to the ON mode.
6. Wait about 10 seconds. NOTE: When the resetting the parking and back-up sensor control unit is successful, the buzzer sounds for 2 seconds.
7. Press the parking and back-up sensor switch.
8. Make sure that the system works normally.

This is a quick reference guide for roadside assistance providers and DIY-ers, on how to reset the parking and backup sensor on a 2020 Acura MDX