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XC90 '02–'15 General Forum for the P2-platform XC90 model

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Reverse Warning Service Required

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Old Feb 27th, 2014, 17:27   #1
SkipjackUK
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Exclamation Reverse Warning Service Required

went to the bottle bank and did some recycling today, left the engine running whilst emptying bottles from boot in bottle banks. when i get back in the car i get a 'Reverse Warning Service Required' message on the dash.

anyone got any ideas!

ta
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Old Mar 2nd, 2014, 16:41   #2
SkipjackUK
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gave the 4 rear sensors a good clean the other day and have been without this warning message now for 2 days. fingers crossed
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Old Jul 29th, 2021, 03:53   #3
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Thank you for the information 😊
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Old Jul 29th, 2021, 09:52   #4
Tannaton
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It's usually one of the 4 sensors in the bumper either not working or giving strange readings. Sometimes this can be caused by dirt on them or moisture from pressure washing.

If it comes to it the sensors are relatively inexpensive and can be changed without removing the rear bumper if you are prepared to carefully butcher the old one.
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Old Jul 29th, 2021, 10:25   #5
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Clean using a soft brush (baby toothbrush) and check/clean the ring for dirt/crud and carefully run a cocktail stick round the ridge to clean out any muck that can give false readings, otherwise it can be a failed sensor or water ingress to the loom for the sensors ... its a well known XC90 issue.
I had mine replace under warranty , first the sensors, then the loom, after the updated loom, never had the problem again.

Hope it helps
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Old Jul 29th, 2021, 15:28   #6
Familyman 90
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Quote:
Originally Posted by TruckbusUK View Post
Clean using a soft brush (baby toothbrush)...
Give it a quick rinse before putting it back in the bathroom and the missus will be none the wiser
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Old Aug 1st, 2021, 18:09   #7
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I had park assist service required the other day drove a couple of miles turned the ignition off and on then they worked again so i cleaned the sensors with WD40 just to make sure and they have been ok since i put it down to me not using it for two weeks
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