XSeries-forum

Morning all,

My beeps aren’t working!!!!  - reverse engaged bleep and flashing pdc button but no beeps?

Could this be as simple as sensors?

Cheers
Mark

Hi

Ideally a code reader would really help, brim sure there is a post on e53 section if you do a search and put your hand in front of the sensors and you can feel them pulse slightly, where they aren't working they don't send out a pulse

If you have just washed the car and use a hose or pressure washer water could have got in and just needs to dry out a bit I used to find.
Graeme

Ive never tried the 'feel them pulsing thing' so can't comment but if you get down close to them you can hear them click if they are working. As mentioned already a scanner will pick it up. The sensors are fairly cheap on eBay at around a tenner. I usually keep a spare front a rear one for when it happens (which is fairly rare to be honest). And as also mentioned, het washing and hosing can also cause the issue as can dirt across the sensor. best to wipe rather that rinse.

Smee

Thanks for your advice.

So far I’ve wiped clean and carried out the ‘listening test’ and confident all sensors are clicking at rear.
IF the PDC has a fault and a sensor was replaced but the error code not deleted would this system still disable even though a new sensor had been fitted...?

Also, if the front has a problem would it also disable PDC?

Are the front ones clicking they all work together.

As a general rule of thumb, you need to clear error codes after fix. If you haven't got a code reader I think disconnecting the + and - from battery and touching them together will reset. Someone with more knowledge on this may confirm

Latest - all 4 still clicking okay - the front 4 no sound at all!??

Next step - replace all 4 or take it into a garage for £28 and see what they come up with?

Can you take 1 out from the rear and swap a front 1 and see if it click's.
Reason for this is to see if it works in the front and they have not been turned off as you can turn the front ones off and somebody might have done so.
Also strange for all 4 to go down.
Another thing it could be id a bit of corrosion on the pin's in the plugs but unplugging them and a squirt of contact cleaner will sort that out.

Extra update!

Ignition on - reverse selected, went to the front and hey presto on is faulty and it’s 2nd in from left

Read the General Section of the E53 forum, there is a topic there currently abbiut ebay pdc sensors and which ones to buy, price etc

If it's one of the inner one's then get a good grip on it and pull not a bumper off job.

Alan,

It is one of the inners, how is it accessible...noticed a plastic clip to the left which looks as though you can remove by a screw driver?

[quote="Markyd74"]
Alan,

It is one of the inners, how is it accessible...noticed a plastic clip to the left which looks as though you can remove by a screw driver?
[/quote]
Have a look at this advert it is the holder.
You can see the metal clips they are spring type and just pull/prise out.
You don't need to take anything off the bumper.
link
http://www.ebay.co.uk/itm/BMW-X5-Series ... 1438.l2649

Front & Rear PDC sensors

Got the pdc working was a wiring issue on the middle front sensor.....

the part number front front middle one is 6620 6989069 can hey be used for the rear middle 2?

I also need the part number for the front 2 corners and rear 2 corners, can anyone help?

I have put middle ones on corners and corner ones in the middle all work for me.