Raf Verjans
Member Since: 14 Jan 2022
Location: Bilzen
Posts: 13
  
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Hi all
I’ve searched trough the forum for a thread that deals with my issue, but I couldn’t find anything - so hear I go…
Parking aid not working coorectly (soletiles a bleep, mostly nothing). Changed the sensors (not original ones), 1 functioned, but with a constant bleep. Gave the IID-tool a shot, 3 were ‘never detected’. Changed the loom, now they’re all detected, but when put in reverse, they give an almost constant bleep. IID-tool live read: 2 at 30-50cm, 2 remain at 2,55m - while nothing is behind the car. IID-tool gives no fault on the parking aid system itself.
Mailed GAP-diagnostics (great service btw) and they’ve told me that there’s or a problem with the power, or with the ground, or with the CAN-wires.
I’m a bit out of options on what I can do myself… if it’s possoble to recalibrate of reset the PDC-ECU, that woult be somerhing I would try ?
If there’s a thread that deals with this item, please let me know - my apologies in that case !
Thanks a lot for your help !
Regards,
Raf
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 12th Mar 2022 8:10 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10529
 
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The 2 that read 50cm are faulty.
Try swapping in your old ones if you don’t want to spend money.
Check live values with bumper off
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| 12th Mar 2022 8:16 pm |
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Raf Verjans
Member Since: 14 Jan 2022
Location: Bilzen
Posts: 13
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Thanks !
A few adittional remarks…
After demounting the bumper to replace the loom, I’ve connected the new loom with the sensors, and taped them to the iron bar to do a simulation. But they were not detected nor functioning in any way. Only after remounting the bumper because I gave up, the PDC started working again. Is it a possibility that the rear lights need to be connected too before the PDC functions ?
Also: the sensors that give the 2,55 distance, keep giving that distance, even though something is directly in front of it.
R
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| 12th Mar 2022 8:25 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10529
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Humm.
Is that with the engine running or not ?
For the sensors to work the park brake must be off and in reverse
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| 12th Mar 2022 9:38 pm |
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Raf Verjans
Member Since: 14 Jan 2022
Location: Bilzen
Posts: 13
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Hi Pete, yes - engine on and in reverse… parking brake was off.
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| 12th Mar 2022 10:21 pm |
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Raf Verjans
Member Since: 14 Jan 2022
Location: Bilzen
Posts: 13
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And I double-checked all the connections.
One remark: tha car was on a bridge with both the rear wheels off. We were changing the suspension arms at the same time. But no fault was given by the IID-tool during this action.
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| 12th Mar 2022 10:26 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10529
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If the engine was running, sometimes the alternator can cause false triggers
So try with engine off to see if that’s the issue
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| 12th Mar 2022 10:47 pm |
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Raf Verjans
Member Since: 14 Jan 2022
Location: Bilzen
Posts: 13
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Tried that in the first instance… but since everything stayed dead, I’ve started the engine and put it in reverse. Result was twice the same, not working…
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| 12th Mar 2022 10:56 pm |
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