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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > Re-attached parking sensor to rear bumper
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      05-10-2015, 11:13 AM   #1
beanbaguk
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Re-attached parking sensor to rear bumper

Today somebody decided to hit the back of my car, scraping the bumper and knocking out the parking sensor on the corner.

Does anyone know of a way to re-attached it without removing the bumper? The scratches will just have to wait as they're not too bad and I could probably improve them with some polish but the sensor needs to be re-attached as it goes insane whenever I engage reverse.

I've tried to get my arm up there but it's impossible to reach the mounting hole....



Any ideas?

ETA: The car is an F31 M Sport
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      05-10-2015, 11:17 AM   #2
xxxjecxxx
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Can you just disconnect it for now? So it will make less noise?

Wire coat hanger should help you gently pull the cable enough for you to disconnect it.

Eventually you will have to remove bumper.
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      05-10-2015, 11:24 AM   #3
Trcb777
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Can you loosen the heat shield to gain access? I had the inside left sensor pushed in a little and was able to get to it with my hand, albeit a few scrapes and bruises. Then again, all I needed to do was get the sensor flush to the the bumper.
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      05-10-2015, 12:47 PM   #4
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Remove the bumper. All other methods will result in worsening things. 1hr tops
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      05-10-2015, 04:06 PM   #5
beanbaguk
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So....after lifting the car up on axel stands, I found it was pretty easy to clip the parking sensors back in. You can easily reach it from under the car.

Also a bit of Auto Glym paint restorer, polish and wax and some elbow grease resolved the scratches. There's a tiny down to the surface knick but luckily, it was possible to remove the damage.

All back to business again.

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