Parking Sensor Problem?

I’ve got a bit of a mystery on my hands. My parking sensor on the passenger side front keeps going off and beeping like a crazy person. I’ve tried turning the Parking sensor button on and off, and sometimes that works, but other times I have to leave it off for a while and then turn it back on. Is this something that’s easy to fix? Can I replace the sensor myself?

 

You don't have any snow/ice or debris covering it do you?

 

No! I actually cleaned it with alcohol to make sure it was clean.

 

Water can get in them and cause issues and alerts. Sometimes It may take a day or two of dry weather to clear.

Or it could be a bad sensor, nick in wire or the sensor connector is dirty.

 

Good point on connector. As a free troubleshooting step, look for any nicks and reseat the connector.

 

I'm not 100% on this, but on the Creader Elite bi-directional scanner I just got for my FlexFuel truck (which worked like a charm) I believe I recall seeing an option for adjusting the sensitivity of the parking sensors.

 

I’ve been trying to figure this out for a while now, and I’ve searched everywhere but haven’t found a solution. I thought I’d ask you all here if you have any ideas.

 

I'll give that a try. I really surprised no one else has had a problem like this.

 

I have the same problem but it says 3 of the 4 sensors are bad.... how is that possible

 

Unfortunately there is no communication available for the parking sensors. Makes it a pain to diagnose. I always kept a known good sensor to swap out to figure out which one was causing the issue.

 

I shared this on a thread I started after this one. After I posted it, I stumbled on a fix and discovered a fix for my sensor sensor and now it's working perfectly. Here’s the edit I made to that post.

EDIT: I wanted to share a quick fix I found for my faulty Parking Assist Sensor. I had been searching for a solution for a while, and I stumbled upon two YouTube videos that suggested using WD40 to fix the issue. The sensor would come on and then not go off. In both videos, they recommended spraying WD40 into the gap between the sensor and the part that holds it onto the bumper. To my surprise, it worked! The sensor has been functioning perfectly ever since. I’m guessing that maybe some water had gotten in between the sensor and the part, causing the sonar to malfunction. By using WD40, which displaces water, I was able to resolve the problem. I hope this helps someone else who’s been struggling with the same issue. It was quite frustrating to find a solution, but I’m glad I did!

 

Wow the wd40 trick worked!!!! All the sensors are functioning thank you so much for the tip!

 

Trying to get my head around this. So you sprayed WD40 on the back of the sensor or spayed the sensor from the front?

 

I sprayed inside the connectors after I unplugged them. Used one of those keyboard air canisters to dry them out and plugged them back in.

 

Glad I could help! Amazing how easy a fix this is. Mine has been fixed for over a month now without a problem. I can't believe nobody here or in other places didn't know this. I did so much searching about fixing and replacing these sensors and found two seemingly obscure videos, one which was in the UK on using WD40 for this fix. I guess this is just another application for using WD40 we can add to the list.

 

You have your sensor that fits into a sleeve that snaps and holds onto the bumper. You spray the WD40 in between the sleeve and the sensor. My guess it that there is some moisture or water in there that interfers with the sonar of the sensor and the WD40/WD=Water Displacement removes it and problem fixed.

 

So you didn’t remove your connector and spray WD40 onto the terminals? Did you spray from the front on the back of the sensor? Chance03 said he removed the connector and spayed into the sensors onto the terminals.

 

All I did was spray in between the the sensor and the sleeve. That's all the videos showed that I found. There is no need to spray or take apart just KISS.