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7th January 2022, 21:21 | #1 |
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Rear parking sensors
The rear sensors weren't working when I bought the car in October. Now I've straightened everything out that mattered, I'd like the sensors to work.
There is no clicking from any sensor. I disconnected the connector behind the bumper and cleaned & reconnected it but still nothing. I know at least one sensor is bust due to damage. Am I right in thinking that when reverse is selected, power should go to the module, and power should also go from the module to the sensors? If so, I'll test the car-side connector behind the bumper. Second question. Is there a display on the IPK as well as a beeper when the sensors do work? Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles |
7th January 2022, 21:48 | #2 |
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I dont think there is a display on the IPK. I can probably find another module you can try and see if that solves the problem. I'm perhaps a bit over 20 miles from you if you want to pop over
macafee2 |
7th January 2022, 21:56 | #3 | |
I really should get out more.......
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Quote:
1 - Yes - just check your reversing lights work - if not the reverse switch has failed and your sensors wont work 2 - There is no display on the IPK 3 -Yes when you select reverse there should be a ONE second beep to tell you all is OK 4. In my issues with the parking sensor it has been the connector that draws in the 4 sensor looms and channels them to the parking ECU as it is prone to water ingress 5 . Your parking ECM may have failed - but that is rare - black ECM on early models and white on later models not sure of the cutover date. 6. Check your sensors - select reverse and get someone to listen to them - if they are ticking then the sensor is fine - which would point to the connector or the ECM 7 . Finally in early car the reverse sounder is mounted at the back of the car and they do fail -Rimmers have them - on later cars the sounder is incorporated in the IPK - if it has failed then the door open sounder wont work as well.
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7th January 2022, 22:12 | #4 | ||
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Quote:
Quote:
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles Last edited by goltho; 9th January 2022 at 11:45.. |
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7th January 2022, 22:15 | #5 |
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So going on from all that, should OEM sensors work with an aftermarket unit? They'll both obviously be 12V but other than that, I'm not au fait with what the sensors require in the way of signal. I'll check in the morning whether the (black) aftermarket sensors will fit in the existing holes; if so, and if they're technically usable, I can paint them to match.
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles Last edited by goltho; 7th January 2022 at 22:53.. |
8th January 2022, 09:13 | #6 |
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Almost certainly the wiring loom between ECU and connector behind the rear bumper. The connector pins get corroded and the copper cable terminations oxidised within the connector.This causes volt drop to the sensors so won't work properly. No amount of cleaning cured mine. A replacement loom worked straight away. ECU was older black type and was fine.
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8th January 2022, 09:25 | #7 | |
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Quote:
macafee2 |
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8th January 2022, 12:42 | #8 | |
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They are, you lucky person. I use only them for timber stuff. Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles Last edited by goltho; 8th January 2022 at 12:44.. |
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8th January 2022, 13:56 | #9 | |
I really should get out more.......
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To be honest, mate, no need to worry about it - if you buy a cheapo kit off eBay it'll come with sensors and everything. Think my entire kit cost £13! Been working fine now for nearly 10 years...
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8th January 2022, 13:56 | #10 |
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