Parking sensors beeeeeeeep!

Steely · Post by **Steely** » Wed Nov 08, 2017 10:46 pm

Another issue to resolve, 07 M E86.. putting in reverse first time after starting I get a long beep, then nothing, the system isn’t working, what should I look for?
Assuming a sensor is faulty, is it easy to replace? Assume you have to remove the rear bumper.
It’s not that important a job, but I want to get everything working.

Thanks again!

Ducklakeview · Post by **Ducklakeview** » Wed Nov 08, 2017 10:49 pm

More than likely a dead sensor - Need codes reading to identify which one.

Mike

Steely · Post by **Steely** » Wed Nov 08, 2017 11:18 pm

I thought it might be a sensor Mike, do you know if they are easy to replace? If I can get one.

Ducklakeview wrote: ↑Wed Nov 08, 2017 10:49 pm More than likely a dead sensor - Need codes reading to identify which one.

Mike

Ducklakeview · Post by **Ducklakeview** » Wed Nov 08, 2017 11:22 pm

Steely wrote: ↑Wed Nov 08, 2017 11:18 pm I thought it might be a sensor Mike, do you know if they are easy to replace? If I can get one.

Ducklakeview wrote: ↑Wed Nov 08, 2017 10:49 pm More than likely a dead sensor - Need codes reading to identify which one.

Mike

BMW say you need to take the bumper off, BUT depending on which one it is, it can be done without.

Mike

ph001 · Post by **ph001** » Wed Nov 08, 2017 11:39 pm

Put the car in reverse and swich on the ignition (without starting it). Put your ear right up against each sensor in turn. A healthy sensor will emit a regular ticking sound...a faulty one won’t.

Steely · Post by **Steely** » Wed Nov 08, 2017 11:53 pm

I tried it earlier and couldn’t hear anything, but it was a bit noisy and my ears not so good, will get the kids on it haha.

ph001 wrote: ↑Wed Nov 08, 2017 11:39 pm Put the car in reverse and swich on the ignition (without starting it). Put your ear right up against each sensor in turn. A healthy sensor will emit a regular ticking sound...a faulty one won’t.

Mr Tidy · Post by **Mr Tidy** » Thu Nov 09, 2017 12:01 am

I had read that before I got my latest E86 - it beeped as soon as I put it in reverse, which I thought meant it wasn't working!

But when I reversed towards something near it beeped and got louder and quicker the nearer I got, so working fine.

So after finding out mine worked perfectly I discovered having a "beep" on selecting reverse is an option in the settings!

Hopefully yours are working as they should OP, but maybe not as you expected!

ph001 · Post by **ph001** » Thu Nov 09, 2017 12:01 am

Yeh you need somewhere quiet and don’t start the engine.

Steely · Post by **Steely** » Thu Nov 09, 2017 12:34 am

That would have been nice, but no luck for me.
I read that a battery disconnect to reset everything might help, and as I need to try that for Bluetooth too, I will cross my fingers with full expectation of having to spend some money anyway

Mr Tidy wrote: ↑Thu Nov 09, 2017 12:01 am I had read that before I got my latest E86 - it beeped as soon as I put it in reverse, which I thought meant it wasn't working!

But when I reversed towards something near it beeped and got louder and quicker the nearer I got, so working fine.

So after finding out mine worked perfectly I discovered having a "beep" on selecting reverse is an option in the settings!

Hopefully yours are working as they should OP, but maybe not as you expected!

kis · Post by **kis** » Thu Nov 09, 2017 8:33 am

Steely wrote: ↑Thu Nov 09, 2017 12:34 am full expectation of having to spend some money anyway

The most pleasurable mods (or fixes) are those done for free... Just requires some problem solving!

Hope it works out! Maybe its just like Mr Tidy says? Failing that you've got to find the sensor that isn't working and swap it out.

TomK · Post by **TomK** » Thu Nov 09, 2017 2:33 pm

It might also be the PDC module, mine failed on my m3 and from memory I had the same as you, just a long beep.
If the sensors check out ok as described above then look at that.
I think it's this guy for an e85/6
http://www.ebay.co.uk/itm/BMW-Z4-E85-E8 ... SwalpZyjWe

MACK · Post by **MACK** » Thu Nov 09, 2017 7:31 pm

Steely wrote: ↑Wed Nov 08, 2017 11:53 pm I tried it earlier and couldn’t hear anything, but it was a bit noisy and my ears not so good, will get the kids on it haha.

ph001 wrote: ↑Wed Nov 08, 2017 11:39 pm Put the car in reverse and swich on the ignition (without starting it). Put your ear right up against each sensor in turn. A healthy sensor will emit a regular ticking sound...a faulty one won’t.

You can usually tell which one is down by vibration. The working ones will vibrate slightly so very gently touch each one until you identify the one that's isn't doing anything. You don't usually have to read the codes to work out a knackered parking sensor. the vibration or ticking method should suffice .

Steely · Post by **Steely** » Thu Nov 09, 2017 8:39 pm

I found the offending sensor, now to get a replacement (saw one on eBay for about £45) and suss out how to replace it!

ph001 · Post by **ph001** » Thu Nov 09, 2017 9:55 pm

Is it a corner one?

Steely · Post by **Steely** » Thu Nov 09, 2017 11:51 pm

ph001 wrote: ↑Thu Nov 09, 2017 9:55 pm Is it a corner one?

It’s the second one in on the near side, I’m guessing that means bumper off?

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