Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
KevinD3 wrote:
I’ve copied the below from the workshop manual, apparently parking sensor “tell you” what wrong the second ones sounds about right with your description?
Diagnostics
The parking aid module has a diagnostic connection via the medium speed CAN to enable faults to be retrieved using T4.
Additionally, an on-board diagnostic routine within the parking aid module constantly monitors the system and alerts the driver to a system fault by emitting a tone from the front or rear sounder, depending on the fault.
If a parking aid system fault has occurred, the parking aid module will relay the occurrence of the fault to the driver in the following ways:
The status LED will flash at a frequency of 2Hz if the system is active and fault is detected in the sensors, sounders, related wiring or the module.
The front sounder will emit an error tone for 3 seconds at a frequency of 1500Hz if a fault is detected with the front sensors or the rear sounder develops a fault.
The rear sounder will emit an error tone for 3 seconds at a frequency of 1500Hz if a fault is detected with the rear sensors, the switch, the LED in the switch or if there is a CAN bus error.
Yeah the second one sounds about right, is that manual available anywhere? I feel like it might be somewhat of a bibleNewbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
14th Nov 2021 11:36 pm
KevinD3
Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1252
Parking sensors are in doc 413-132008 HSE Stornoway Grey
My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕
14th Nov 2021 11:49 pm
PitVital
Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
Thankyou Kevin! I will try and have a go at this after work today Newbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
15th Nov 2021 9:45 am
PitVital
Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
I finally got around to getting the rear sounder out, and now the beeping has stopped, so I guess my hearing is broken as when I plugged it back in I could here the long beep again when I switched the ignition on, so the beep was from the back and not the front
As the LED is flashing constantly in the switch I am thinking it is more this problem:
Quote:
The status LED will flash at a frequency of 2Hz if the system is active and fault is detected in the sensors, sounders, related wiring or the module.
So I think my next option will be to get a code reader that shows live data and see if one of the sensors is busted or not, and I guess remove the bumper cover and see if the wiring has shorted or not.Newbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
18th Nov 2021 10:04 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10592
The next thing is to read the fault codes.
Generally it will:
1. point to a specific sensor
or
2. Say short circuit front and rear. Which usually means one of the sensors has failed and you manually need to remove every sensor
p.s - It should also say rear speaker, if you have had it unplugged. Ignore,
18th Nov 2021 7:51 pm
PitVital
Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
I have ordered the aforementioned Autel AP200 so when it arrives I will have a go with that Newbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
18th Nov 2021 8:43 pm
PitVital
Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
So I am guessing this is going to be a faulty sensor either in the front, rear or both
Newbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
20th Nov 2021 10:24 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10592
Yeap.
Or wiring loom short to bumper metal
20th Nov 2021 10:39 pm
PitVital
Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
I am guessing the green corrosion in this cable is the problem
Edit: "Error retrieving album data" - cannot upload a photo to show - but the yellow / red cable on the rear loom is split and full of corrosion by the looks of itNewbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
23rd Nov 2021 2:47 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10592
i can see pic
that cable problem does not match the fault code
with park sensors, there are usually about 3 faults, as they haven't worked for years !
23rd Nov 2021 7:18 pm
PitVital
Member Since: 01 Nov 2021
Location: Exeter
Posts: 31
So as I can’t hear any of them click, front or rear, I wonder if all the sensors are dead or if there is another broken cable somewhereNewbie - 2008 D3 HSE 2.7 TDV6 - Stornoway Grey
23rd Nov 2021 7:40 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10592
you need a multi meter.
put it on ohms.
disconnect the bumper wiring from the car
put the meter wires between black and brown on the bumper cable
Adjust meter till it reads a value
Unplug each sensor in turn. If the value goes up significantly (or reads 1) when one particular sensor is disconnected then that sensor is probably faulty. Leave it disconnect.
If nothing significant happens, repeat on the other bumper.
Plug the bumpers back into the car. (leaving the 1 suspect sensor disconnected)
Clear the fault codes.
Put the car into reverse with park brake off. See what happens.
Back into Park.
Re read fault codes and see if the "short" (or power circuit in the case of autel AP200) codes have gone. If no, repeat above tests.
A new code would be expected for the 1 disconnected sensor.
Its usually sensible to have 2 new sensors avaiable to swap in. Makes things lots easier
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