Parking assist help

[Big Daddy]

So, I had the service park assist message pop up and the disable light on. I replaced the 4 rear sensors, cleaned everything but the message is still there and its disabled.

Do you have to clear the codes or does it reset?
Is there a reset procedure?

 

[Big Daddy]

Anyone?

 

[crash68]

You might want to try AlfaOBD, it can read and reset codes a typical code reader can not.
You problem might be with the wiring or the module itself

 

[KalboKalbs]

Following probably is not helpful to your situation.

Couple years ago. Replaced all the front sensors on my 15 Laramie. IIRC, everything reset by itself when I restarted the engine. Walked in front of each sensor at a couple distances to ensure they worked properly. FWIW, I got sensors off of Amazon. Not Mopar sensors, as after market far better price point.

Maybe Google the issue or check YT.

 

[VanLaar]

Folks,

I’ve recently spent some time working on my 2015 Ram 2500 Laramie back up sensors. My backup sensors worked great but as soon as it rained, one of the backup sensors read incorrectly and show that an object was immediately behind the vehicle, even though nothing was there. This situation was repeatable, each time it rained outside.

I climbed beneath the vehicle and took a good look around. I checked/re-connected all the sensor connections. While inspecting the harness, I saw that one of the four connections had a broken female connector. I also saw that the harness was pinched between the bumper and frame. I suspect that the harness was pinched when my vehicle was at the autobody getting the tailgate repainted.



After checking/reconnecting all the sensor probes, I then checked to see if this corrected my inaccurate reading. To my surprise, now all the backup sensors were showing a fault on my instrument cluster. Now, I have NO backup sensors!

I then went out and purchased a new OEM backup sensor harness, and then checked out, and re-connected all the backup sensors.

When I removed each sensor, I checked all the pins, checked the ohm readings, cleaned up all the sensors, applied di-electric grease to the outside of the male plug, etc. I found that one of the sensors that had two bent pins.

I fixed the bent pins with a precision plyer. This must have been the root cause to the backup sensor failure.

When everything was put back together, I tested things out by placing the vehicle in reverse, and to my amazement, the sensors STILL did not work!

I then went into my ODB reader and checked for codes. I found that I did in fact have a DTC code of B1297-11 (PTS Sensor 10 - Circuit Short to Ground). I then went into my ODB reader and reset the code. Voila, … all the backup sensors are working great.

If you have a DTC code, it will need to be reset before the backup sensors will work again.

For your reference, I checked the ohm readings on all my OEM backup sensors.
- Checking from pin left to middle, I had ~ 141 ohms.
- Checking from pin left to right, I had ~ 51 ohms.

I hope this post will be helpful to others.