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Fitting genuine BMW reversing sensors

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poortomsacold
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Fitting genuine BMW reversing sensors

Post by poortomsacold » Tue Nov 29, 2022 12:30 pm

Hi All

At the weekend I picked up my first Z4 - a 2003 3.0i 6 speed. It needs a little TLC, one of the jobs being a respray of some nasty scuff marks on the rear bumper. However, I thought I could instead get a replacement bumper from a breakers as that might prove cheaper. I have found one in the right colour that has the reversing sensors fitted. I'd quite like the car to have reversing sensors, but does anyone know how tricky a job it would be to actually install it all? I imagine I would need a module, but wouldn't know where to start in terms of where that goes, where it connects and if it is even capable of being a plug and play job?

Anyone got any ideas?

Thanks!
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Fitting genuine BMW reversing sensors

Post by mac27040 » Tue Nov 29, 2022 12:46 pm

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Fitting genuine BMW reversing sensors

Post by poortomsacold » Tue Nov 29, 2022 12:53 pm

That's great, thanks very much indeed. Looks like it might be a garage job after all! Wonder if it becomes somewhat easier/quicker if I only have rear reversing sensors.
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Fitting genuine BMW reversing sensors

Post by enuff_zed » Tue Nov 29, 2022 1:05 pm

Well they only came with rears as standard.
With the age of your car you may find some of the required loom already in place.
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Fitting genuine BMW reversing sensors

Post by poortomsacold » Tue Nov 29, 2022 1:33 pm

Thanks enuff-zed. If I were to find some of the required loom on removing the original bumper (non-reversing sensor one), would it just be plug and play or have I misunderstood?
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Fitting genuine BMW reversing sensors

Post by enuff_zed » Tue Nov 29, 2022 1:45 pm

poortomsacold wrote: Tue Nov 29, 2022 1:33 pm Thanks enuff-zed. If I were to find some of the required loom on removing the original bumper (non-reversing sensor one), would it just be plug and play or have I misunderstood?
Never done it myself but pretty sure there's a module you'd need to get too.
I doubt just removing the bumper would show any loom.
I think you'd need to follow the sensor cables back inside the car to where they all meet up with one loom. So hopefully that single bit would be there?
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Fitting genuine BMW reversing sensors

Post by enuff_zed » Tue Nov 29, 2022 1:50 pm

Here's the layout.
The module fits in the right rear corner of the boot somewhere.
I think you'll need that and the loom to the sensors.
Then hope the other plugs for the module are already there.
Not sure what happens at the front, whether it uses an existing 'beeper'?
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Fitting genuine BMW reversing sensors

Post by poortomsacold » Sun Dec 18, 2022 3:37 pm

Thanks for that and sorry for the very slow reply!

I can see that the modules are pretty easy to obtain. I am unsure where the module would plug into in the car itself (if there will be plugs waiting) and if it would need to be coded into the car at all. If anyone knows that would be a massive help. Thanks!
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Fitting genuine BMW reversing sensors

Post by Rockhopper » Sun Dec 18, 2022 4:55 pm

i think there is something under the panel by the drivers feet as well.

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Fitting genuine BMW reversing sensors

Post by smorris_12 » Sun Dec 18, 2022 6:30 pm

The PDC uses the standard gong unit under the steering column. All BMWs of this vintage get one of those.
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Fitting genuine BMW reversing sensors

Post by javis20 » Sun Dec 18, 2022 6:53 pm

These are pretty cheap and quick to install... :D

https://www.ebay.com/p/4029180660

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Fitting genuine BMW reversing sensors

Post by poortomsacold » Wed Dec 21, 2022 11:00 am

smorris_12 wrote: Sun Dec 18, 2022 6:30 pm The PDC uses the standard gong unit under the steering column. All BMWs of this vintage get one of those.
Thanks for that. So it could be as simple as getting a PDC unit,.connecting the reversing sensor cables to that and the PDC to the gong, or would some sort of coding still be required? Thanks.
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Fitting genuine BMW reversing sensors

Post by spammy » Wed Dec 21, 2022 1:05 pm

hi, i fitted new sensors and module this summer straight forward really the module is dead easy to fit and once you've got the bumper off just a matter of pushing the new sensors in , then reconnect and bumper back on job done. good luck hope you find it as easy as i did . :) Merry Christmas.

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Fitting genuine BMW reversing sensors

Post by Huz-z » Thu Dec 29, 2022 1:29 pm

I don’t think the kit is available any longer so for folks who don’t have these in their car it seems that they are out of luck.
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Fitting genuine BMW reversing sensors

Post by Robster68 » Mon Jan 02, 2023 9:33 pm

spammy wrote: Wed Dec 21, 2022 1:05 pm hi, i fitted new sensors and module this summer straight forward really the module is dead easy to fit and once you've got the bumper off just a matter of pushing the new sensors in , then reconnect and bumper back on job done. good luck hope you find it as easy as i did . :) Merry Christmas.
Have you got any photos of the module connected especially part no,I’ve seen module on real oem and the same module is fitted to e46 and e39,a few on eBay but all with different part no’s.

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