Jon05 Posted March 5, 2023 Share Posted March 5, 2023 I have just got a q5 2015 se model. It has rear sensors fitted but the mmi option is in grey and not red. Where to start fault finding please. Quote Link to comment Share on other sites More sharing options...
Magnet Posted March 5, 2023 Share Posted March 5, 2023 Hello Jon, Probably down to one of the sensors being faulty, but regrettably it’s likely to need diagnostics to home in on the culprit. Kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
Jon05 Posted March 5, 2023 Author Share Posted March 5, 2023 Yeah I thought so. Many thanks Quote Link to comment Share on other sites More sharing options...
bigtrv Posted March 26, 2023 Share Posted March 26, 2023 You don’t need to get a diagnostic. You can find the faulty sensor by putting the car in reverse. The car will activate the sensors. Go round each sensor on the car and put your ear to them. The good ones will make a clicking sound. The bad ones won’t. Recently did this on my Q5 and found 2 dead sensors. Replaced, and all worked spot on from then. There is a YouTube video out there that explains in more detail. But that’s the general gist. Quote Link to comment Share on other sites More sharing options...
Jon05 Posted March 26, 2023 Author Share Posted March 26, 2023 Yeah. I tried the listening to each sensor and figured out the dead one. Thanks Quote Link to comment Share on other sites More sharing options...
bigtrv Posted March 26, 2023 Share Posted March 26, 2023 👍 Quote Link to comment Share on other sites More sharing options...
Magnet Posted March 27, 2023 Share Posted March 27, 2023 Regrettably, never worked on mine! Quote Link to comment Share on other sites More sharing options...
Steve Q Posted April 1, 2023 Share Posted April 1, 2023 Apparently on certain cars you can press the sensor in with your finger to test if ones faulty. Whether this is true I'm not sure. Quote Link to comment Share on other sites More sharing options...
Jon05 Posted April 1, 2023 Author Share Posted April 1, 2023 All fixed. Dealer sorted it at no cost to me. Quote Link to comment Share on other sites More sharing options...
Magnet Posted April 2, 2023 Share Posted April 2, 2023 Thanks Jon. So what was the fix? Kind regards, Gareth. p.s. Re. these YouTube suggestions of listening, WD40 etc. etc. Has anyone actually identified the failed sensor by these methods - rather than assuming the procedure works? As I say, never worked for me, so would genuinely be interested to hear if they have actually worked for some. Quote Link to comment Share on other sites More sharing options...
bigtrv Posted April 2, 2023 Share Posted April 2, 2023 For demo purposes I disconnected one sensor. This results in no display on the MMI, flashing parking sensor button and no functionality. So, pop the car in R, the parking sensor button will flash, there will be no display, go round the car and listen. Use your phone if your struggling to hear anything, it shows up better on a recording. I’ve done a billy basic video. Don’t judge. 😄 IMG_2012.MOV Quote Link to comment Share on other sites More sharing options...
Steve Q Posted April 4, 2023 Share Posted April 4, 2023 Glad you got sorted 🙂 Quote Link to comment Share on other sites More sharing options...
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