Bip - beeeeeeeeeeeeeep parking sensor

MissMoppet · 21st April 2024, 12:35

I think we're all familiar with the continuous beep indicating a fault when reversing, but I am now getting a short BIP then long BEEEEEEEEEEEEp. Exchaustive research of this forum cannot match this hitherto unknown sound so on the basis that BEEPs are all there to tell us something, anyone any ideas please?

I have changed and checked the under bumper loom and sprayed contact cleaner everywhere in sight.

I should add a bit more perplexity, sometimes it works perfectly - but then again it doesn't. How is it an intermittent fault? (It's my Tourer with the ECU parking aid and speaker in the boot).

dave lincs · 21st April 2024, 16:12

Did one last week same fault was corrosion in wires behind bumper where the single wire splits into 4

billh · 22nd April 2024, 09:18

The copper wires oxidise due to corrosion and cause high resistance at the connection blocks. This confuses the system. The wiring loom needs to be replaced, no amount of connector cleaning will fix it. If you perform an autopsy on the cables you will find the copper wires to be black for a long way inside the pvc insulation. The Tourer loom is longer than the saloon but the latter can be re-routed and will work ok, with a bit of a fiddle.

MissMoppet · 22nd April 2024, 12:03

Quote:

Originally Posted by billh

The copper wires oxidise due to corrosion and cause high resistance at the connection blocks. This confuses the system. The wiring loom needs to be replaced, no amount of connector cleaning will fix it. If you perform an autopsy on the cables you will find the copper wires to be black for a long way inside the pvc insulation. The Tourer loom is longer than the saloon but the latter can be re-routed and will work ok, with a bit of a fiddle.

I'm grateful for that. I did buy a saloon loom off eBay as it was the only one I could find but found it was a bit of a stretch, but still didn't work, so I replaced the original. BUT started this morning and it worked. Drove 5 miles, and it wouldn't. The same short BIP then continuous BEEEEEEEEEEp. So how can it be intermittent?

21st April 2024, 12:35	#1
MissMoppet Posted a thing or two R 75 Tourer diesel Conny 2002, V6 Conny saloon petrol 2003 Join Date: Mar 2013 Location: Taunton Posts: 1,130 Thanks: 212 Thanked 406 Times in 223 Posts	Bip - beeeeeeeeeeeeeep parking sensor I think we're all familiar with the continuous beep indicating a fault when reversing, but I am now getting a short BIP then long BEEEEEEEEEEEEp. Exchaustive research of this forum cannot match this hitherto unknown sound so on the basis that BEEPs are all there to tell us something, anyone any ideas please? I have changed and checked the under bumper loom and sprayed contact cleaner everywhere in sight. I should add a bit more perplexity, sometimes it works perfectly - but then again it doesn't. How is it an intermittent fault? (It's my Tourer with the ECU parking aid and speaker in the boot). __________________ Rover 75 Tourer Conny 2002 remapped 160 auto, R75 V6 2.5L auto Connoisseur 2003

21st April 2024, 16:12	#2
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,427 Thanks: 380 Thanked 986 Times in 476 Posts	Did one last week same fault was corrosion in wires behind bumper where the single wire splits into 4

22nd April 2024, 09:18	#3
billh Regular poster Rover 75 Tourer Join Date: May 2007 Location: Denton, Manchester Posts: 79 Thanks: 14 Thanked 24 Times in 14 Posts	The copper wires oxidise due to corrosion and cause high resistance at the connection blocks. This confuses the system. The wiring loom needs to be replaced, no amount of connector cleaning will fix it. If you perform an autopsy on the cables you will find the copper wires to be black for a long way inside the pvc insulation. The Tourer loom is longer than the saloon but the latter can be re-routed and will work ok, with a bit of a fiddle.