Parking sensor fault DS5

[Graham369]

Just replaced a rear parking sensor on my DS5 after someone pushed in the rear bumper and crushed the old sensor, plastic bumper sprung back and all ok, but service light on the dashboard alarm sounds and now no sensors are working but reversing camera is still operative, is there a fuse blown? not all the fuses have a description in the manuals online or in the car, anyone else had this problem?

[GiveMeABreak]

Did you change the sensor? These are incredibly sensitive and do not like any knocks. If you haven't then it's likely damaged one or more of them. Diagbox can tell you which ones are not working. If any one of the sensors is detected as faulty or there is a problem with the wiring, the ECU disables the system for safety reasons.

[Graham369]

Hi Marc thanks for the quick response, yes I've replaced the damaged sensor with a new one, I will attempt to check the wiring hasn't been damaged, regarding the ECU where is that situated on the DS5 and can it be or does it need resetting? sounds like there's no fuse breaker on the parking sensors then? thought that was a bit too easy!
Thanks a lot Graham

[GiveMeABreak]

You can't reset the ECU, but I would recommend a diagnostic with Diagbox to find out what fault code is being throw up.

The Parking Assistance ECU is stored in the rear left side of the boot:- item (5).

[Graham369]

Will update when I've tried those things many thanks.

[Graham369]

Ok here's the update, bought an aftermarket replacement sensor which just did not work!
the listings said it was ok for my DS5 and for around a tenner thought it was worth a go, forget it! Checked with the Citroen Garage and they wanted £120 for a new one well that's just ridiculous, picked up a second hand one for £25 and it works a treat, job done hope this post helps other owners with the same problem just make sure you get the exact replacement sensor then all should be well, many thanks all
Graham

[GiveMeABreak]

Hi Graham, thanks for the update.

It is a fact that a lot of aftermarket fakes or cheaper components (in general) are just not up to the original specification and often involves buying 2 or 3 times. I always recommend original parts where possible as it is often just so predictable having seen this happen hundreds of times.

I am pleased you have it sorted now and I'm sure your update will be another testament to getting original parts whenever possible.