2004 bmw x5 e53 parking sensor issues

[a2ssm]

:-[hi all.

When i bought my x5 the parking sensors were not working. So i had it put on the computer and code 18, voltage, converters in general.

So was told it was the PDC control module. After changing it for a working one i still get the original symptoms which are a loud constant tone and parking sensor button indicator flashing.

i'm located in west yorkshire.

Any ideas what it can be? Thanks in advance

[Ryoken]

before you changed the module did you make sure all the sensors on the car were "clicking"?.
I say this as im having a nightmare with my pdc's at the mo,
mine are all clicking as normal but I still get the beep and the flashing pdc switch...

Steve

[a2ssm]

No clicking. Just constant beep and light on pdc switch flashing. The sensors are not even being engaged it seems.

[jason1872]

Check the connector in the rear of the vehicle under the boot floor,mines had a towbar fitted and someone didn't connect it back up and same as a friend of mines had same issue,the plug is under the floor to the r/hand side.

[a2ssm]

is that near the battery area? I suppose i can follow the connectors from the module which should lead me to this connector.

[jason1872]

You dont have to remove the spare wheel just lift the boot floor and not far from the light cluster on the r/hand side,just about where the bumper bolts on.

[Ryoken]

so , if you put it in reverse , the sensors dont click?

[a2ssm]

no clicking when in reverse.  I have not had a chance to get as just on holiday.  Soon as i'm back i will have a look at it all.

[a2ssm]

Is that the connector? I can't see anything that connects to it?

[Horizon]

That's the connecter for the towbar electrics if it's in the boot under the spare and the air suspension compressor. There is a dedicated towbar electrics mobile you can purchase which integrates the towing electrics with the cars electrics so no wire cutting and splicing needed.

[jason1872]

no thats not it,the one you are after is in the corner under the light cluster.

[a2ssm]

Just checked the plug and it seems fine. The wires all look ok too. Anything else I can try?  :blink:

[a2ssm]

Bump

[strummer]

Sounds to me like you have at least one faulty sensor

[Ubatoid]

Get yourself an cable and a copy of inpa. Then you will be able to see exactly what's going on with graphical representation of the sensor outputs. Diagnosed mine in two minutes.