Rear bumper removal/parking sensor issue
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AudiWorld Member
Joined: Sep 2023
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From: Oregon
Rear bumper removal/parking sensor issue
2020 A5 sportback......I noticed one of the parking sensor buttons is not sitting flush with the surface of the rear bumper. I was able to reach in from underneath and felt it, but not enough to diagnose why or to feel if something is broken. Anyone remove the rear bumper before and can offer advice?
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From: South Jersey
It may be different for the rear sensors, though I don’t know why it would.
— John
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Many people view removing a bumper cover as daunting task, but it's really not, especially the rear. Doesn't hurt to have a second person though. Not heavy, just kinda floppy and awkward. I have not had a reason to remove the cover on my A5 yet, so I can't give you specifics although they are all about the same. This would really be a good time for you to spend the $35 for a 24-hour subscription on erwinAudi.com and take the 15 minutes or so required to download all the factory service manuals for your car. Best $35 you'll spend. I also doubt it requires any calibrations, but you can always disconnect the battery - then the car won't know you did it.
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From: Oregon
I already have the downloaded manuals, but real world experience can be much different than something printed on paper. I found a video of the process, and it doesn't look bad. Seems the brackets that the sensors clip into are affixed with double sided tape to the inner surface of the bumper, so I can probably just hit it with a dab of epoxy. Fortunately the sensor works fine as of now. Thanks
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I’m not so sure about the wire disconnection requiring a re-calibration? While I’ve never had the rear bumper off, my front bumper has been removed multiple times, and had all the wiring disconnected from the sensors, without requiring a recalibration.
It may be different for the rear sensors, though I don’t know why it would.
— John
It may be different for the rear sensors, though I don’t know why it would.
— John
Maybe they are wrong, IDK.
Maybe if so disconnecting the battery fully like mentioned above would work around that, again IDK.
Thread Starter
AudiWorld Member
Joined: Sep 2023
Posts: 59
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From: Oregon
There are dire warnings about carefully setting down the bumper without disconnecting the wiring from it in the stealth hitch install guides for B9 / 9.5 S5s. Directly says doing so will require a trip to the dealer afterwords.
Maybe they are wrong, IDK.
Maybe if so disconnecting the battery fully like mentioned above would work around that, again IDK.
Maybe they are wrong, IDK.
Maybe if so disconnecting the battery fully like mentioned above would work around that, again IDK.
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AudiWorld Senior Member
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I had a loose sensor an a BMW 5 series, and it was as you describe - a holder affixed with 2-sided tape. The sensor just snaps into the holder. If they are indeed like a BMW, then you can probably just buy the holder with the two-sided tape attached. That's what I would do for sure. Very, very, very few glues stick to the plastic that bumpers are made of. I'm quite sure that any epoxy you can buy in normal stores would not stick for long, if at all. You'd be pretty unhappy if it was loose again right after going to the trouble to remove the bumper cover.
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Thread Starter
AudiWorld Member
Joined: Sep 2023
Posts: 59
Likes: 17
From: Oregon
I had a loose sensor an a BMW 5 series, and it was as you describe - a holder affixed with 2-sided tape. The sensor just snaps into the holder. If they are indeed like a BMW, then you can probably just buy the holder with the two-sided tape attached. That's what I would do for sure. Very, very, very few glues stick to the plastic that bumpers are made of. I'm quite sure that any epoxy you can buy in normal stores would not stick for long, if at all. You'd be pretty unhappy if it was loose again right after going to the trouble to remove the bumper cover.
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Joined: Nov 2025
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2020 A5 sportback......I noticed one of the parking sensor buttons is not sitting flush with the surface of the rear bumper. I was able to reach in from underneath and felt it, but not enough to diagnose why or to feel if something is broken. Anyone remove the rear bumper before and can offer advice?