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Author Topic: Faulty rear parking sensor  (Read 1330 times)

Offline Big Col

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Faulty rear parking sensor
« on: 09 April 2025, 19:00 »
Hello

my rear drivers side sensor is detecting a false positive. It goes red as soon as reverse is selected. The other 3 work ok.

Is it a bumper off job to check connections or replace?
If i take the rear wheel arch liner out does this give access?

Would a vcds scan tell me anymore?

Any advice much appreciated
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Current - 2019 Golf GTI
Previous, 2016 Golf GTD, 2014 Leon FR, 2010 Ibiza FR, 2006 Fabia vRS , various Vauxhalls

Offline joe6

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Re: Faulty rear parking sensor
« Reply #1 on: 09 April 2025, 21:29 »
Bumper off job unfortunately to check and replace. They can't be reached from the wheel arch. You can check individual sensors using vcds and measuring blocks  but never tried myself.
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Mk6 GTI Carbon Grey, 2010 Bluetooth and voice fitted, a few VCDS mods still a comfortable family car. Red Scirocco 2011 twin charger stage 1 - enjoyable drive now gone.  White 2016 Polo GTI (roller skate on steroids) replaced with an Indium Grey 2019 7.5 GTI PP.

Offline Big Col

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Re: Faulty rear parking sensor
« Reply #2 on: 10 April 2025, 17:17 »
i feared as much :(

watched a youtube video today where the lights had to come out also before the bumper comes off. I think i'll be leaving it for the now.
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Offline 2007GTI

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Re: Faulty rear parking sensor
« Reply #3 on: 11 April 2025, 12:24 »
If you take the bumper off, I would check the air vents and seal them up, stop future water ingress, see here:

https://youtu.be/R22acNVuCm4?si=q1u9vaxOqT1HLATn&t=220

I just did this and it stopped my leak.
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2014 Mk7 GTI DSG 5dr in Carbon Grey, 18s, leather

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