Front Parking Sensors Firing Too Frequently

[Adrian Hull]

I had some front bumper damage repaired recently - requiring the front bumper to be removed - and on return, the front parking sensors seemed to have a life of their own: firing off all the time, seemingly even when nothing was particularly close. They still work OK when I AM close to something but they also seem to fire off when I'm NOT very close to something. Can they be replaced incorrectly? How does one do it correctly? The experienced body shop I'm using have never come across this problem 

[FROSTYBALLS]

If they were working OK before the damage was repaired, it sounds like a problem the bodyshop need to resolve rather than you.

Was it a Toyota dealer's bodyshop or an independent??

[flash22]

Blow the dust out of the sensors, hopefully they haven't filled them with overspray/paint - if the sensors have been removed they need to go back how they come out

 

[Bernard Foy]

I agree with both Frosty & Flash, I would take it back to the repair shop, they should have a responsibility in the issue.

[Adrian Hull]

Thanks for your replies. The (independent) body shop did have someone who came up with the answer (just after my Toyota dealer told me the same thing). The n/s and o/s front sensors are surrounded by a circular/annular 'bezel'. On these two bezels there is a small dimple. Apparently, this dimple must be located at the 12 o'clock position. Believe it it not, this fixed the problem! No-one knows why or how! 0/10 to Toyota for not having locating lugs on them so you can't get it wrong! Nice not to have kill the beeping all the time! 

I hope this is of use to someone else with the same issue.

[Bernard Foy]

1 hour ago, Adrian Hull said:

Thanks for your replies. The (independent) body shop did have someone who came up with the answer (just after my Toyota dealer told me the same thing). The n/s and o/s front sensors are surrounded by a circular/annular 'bezel'. On these two bezels there is a small dimple. Apparently, this dimple must be located at the 12 o'clock position. Believe it it not, this fixed the problem! No-one knows why or how! 0/10 to Toyota for not having locating lugs on them so you can't get it wrong! Nice not to have kill the beeping all the time! 

I hope this is of use to someone else with the same issue.

 

 

 

 

Great solution, thanks for getting back to us on this 👏, truly useful forum communication.

[FROSTYBALLS]

2 hours ago, Adrian Hull said:

0/10 to Toyota for not having locating lugs on them so you can't get it wrong!

Presumably the dimp!es are there so you cannot get re-assembly wrong - which the  'experienced body shop' obviously did. So lugs aren't needed.

[flash22]

If you don't align the sensor correctly, it puts at the wrong angle - causing a signal bounce