SORRY ! Parking Sensors

Tam · 10th April 2010, 12:17

Ok looked through a lot of threads but not sussed it yet , similar to someone else's problem last week get one long beep first time i engage reverse then nothing next time i select reverse till i switch ignition off and same process again . Anyway had loom out and checked seems fine ! my question is none of the sensors are clicking when in reverse but reversing lights are on so does failure of one sensor result in the rest not working , my plan at moment is to get a new sensor and try each one turn , does this sound my best course of action ? cheers Tam .

James.uk · 10th April 2010, 13:10

Hi Tammyboy..When my mech connected his laptop to my car he got the reading for all 4 sensors up on screen, so try to get someone to check yours for you, that will at least eliminate some possible causes..

Prob with mine is -- they all read OK and are working, but the pesky speaker wont bleep! In my case the indications are that the sensor/contact on the actual gear lever may be at fault.. i.e. wiggle the gear lever about and the bleeper does make the odd bleep or two..

I can also hear the sensors click faintly if I put an ear to them..

It could also be the lil black box fingy in the boot that's faulty in my case..

...

kevineds · 10th April 2010, 17:08

Scratched my head for a while with mine, wiring was ok, control unit ok all the sensors 'clicked', still not working..
This probably sounds weird but touched each sensor in turn could feel the 'vibration' of the 'clicking' but one sensor seemed weaker- changed that sensor and hey presto all working

2Diesels · 10th April 2010, 18:11

Untape the wiring harness a few inches from the multi plug (bumper side) & there will be 2 bunches of wires with blue tape round them, peel the tape away & check the joints in the middle aren't rotten, mine were, stripped the wires back & used heat shrink connectors & taped it all back up & been spot on ever since

Regards Col

Tam · 11th April 2010, 14:59

Cheers guys just been on phone internet so struggling to reply , from what i have read their seems varied reasons for this problem none of which i have discovered as yet . Can anyone say if one sensor is bust will the rest stop working also as in this case or should i be looking further back towards ecu ? Have had loom out from sensors and fixed a broken wire but still the same ! Grrr ! cheers tam.

James.uk · 11th April 2010, 15:22

None too sure, but I think one faulty sensor stops the whole thing from working, bit like Xmas tree light bulbs!

Colin (2Diesels) thanks for the pointer, I will endeavor to investigate said wiring spaghetti fingy..
...

The Masked Banana · 11th April 2010, 16:00

I've has duff sensors for a while. Bit the bullet (for me) and took the rear bumper off. Checked the wiring below the blue tape.....all fine.
Rear sensors all making a faint clicking. Get the non stop scream of the sounder 75% of the time but other times all is fine.

Took the front n/s wheel off. No reversing switch ( Have an Auto CTD) and loads of the threads say how cheap a switch is, but few if any (I obviously missed them) say that there isn't one on an auto box.

Fuses seem fine. Disconnecting battery hasn't helped. At the impact bar behind the bumper the wiring is neatly taped up and dry and goes through the bodywork via rubber grommit that clearly keeps it in place and not chafing (I looked)

So what is it that is causing this................ it used to be 20% of the time but now it's nearing 75%

Can I access the wiring from inside the boot, if so where is best place. All connections to the ECU in the boot checked and re seated.

Bit fed up of the noise so helf for me too please.

roverdog · 12th April 2010, 05:34

I had a similar problem some time ago. It turned out that ONE of the sensors had failed. I had no means of checking at the time so I replaced the lot and the problem was cured.

Tam · 21st April 2010, 17:28

Ok had another go today , took loom out and decided to strip all tape off and inspect all wires , turned out Colin was spot on in his reply earlier as soon as i stripped off blue tape from brown wire the whole lot fell apart and was left with just blue corrosion . This is probably a bumper off job for most but as my loom was out when fitting towbar it was easy enough to get loom out just by lyeing underneath car and cable ties to put back in .

Some pics of process -

HANDY SLOPE ON DRIVE .

LOOM OUT

CORROSION

HOW IT SHOULD LOOK

FIXED AND GOING BACK ON CAR

James.uk · 21st April 2010, 22:40

Thanks Tam. I will have another go at mine shortly..

...

10th April 2010, 12:17	#1
Tam Posted a thing or two 05 ZT+, 04 ZT+, 64 P6 2.0, 74 P6 V8s, 75 P6 V8, 92 214Si, 04 25 Td, 02 Defend , 05 ZR 105+ x2 Join Date: Dec 2008 Location: Kirriemuir Posts: 1,319 Thanks: 701 Thanked 203 Times in 136 Posts	SORRY ! Parking Sensors Ok looked through a lot of threads but not sussed it yet , similar to someone else's problem last week get one long beep first time i engage reverse then nothing next time i select reverse till i switch ignition off and same process again . Anyway had loom out and checked seems fine ! my question is none of the sensors are clicking when in reverse but reversing lights are on so does failure of one sensor result in the rest not working , my plan at moment is to get a new sensor and try each one turn , does this sound my best course of action ? cheers Tam . __________________ Lagoon, last one built! And Horizon 1 of only 2!....MY CARS

10th April 2010, 13:10	#2
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	Hi Tammyboy..When my mech connected his laptop to my car he got the reading for all 4 sensors up on screen, so try to get someone to check yours for you, that will at least eliminate some possible causes.. Prob with mine is -- they all read OK and are working, but the pesky speaker wont bleep! In my case the indications are that the sensor/contact on the actual gear lever may be at fault.. i.e. wiggle the gear lever about and the bleeper does make the odd bleep or two.. I can also hear the sensors click faintly if I put an ear to them.. It could also be the lil black box fingy in the boot that's faulty in my case.. ... Last edited by James.uk; 10th April 2010 at 13:12..

11th April 2010, 14:59	#5
Tam Posted a thing or two 05 ZT+, 04 ZT+, 64 P6 2.0, 74 P6 V8s, 75 P6 V8, 92 214Si, 04 25 Td, 02 Defend , 05 ZR 105+ x2 Join Date: Dec 2008 Location: Kirriemuir Posts: 1,319 Thanks: 701 Thanked 203 Times in 136 Posts	Cheers guys just been on phone internet so struggling to reply , from what i have read their seems varied reasons for this problem none of which i have discovered as yet . Can anyone say if one sensor is bust will the rest stop working also as in this case or should i be looking further back towards ecu ? Have had loom out from sensors and fixed a broken wire but still the same ! Grrr ! cheers tam. __________________ Lagoon, last one built! And Horizon 1 of only 2!....MY CARS

11th April 2010, 15:22	#6
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	None too sure, but I think one faulty sensor stops the whole thing from working, bit like Xmas tree light bulbs! Colin (2Diesels) thanks for the pointer, I will endeavor to investigate said wiring spaghetti fingy.. ... Last edited by James.uk; 11th April 2010 at 15:34..

11th April 2010, 16:00	#7
The Masked Banana Newbie Rover 75 Diesel Conn' saloon Join Date: Jul 2008 Location: Bagshot Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	I'm sorry too I've has duff sensors for a while. Bit the bullet (for me) and took the rear bumper off. Checked the wiring below the blue tape.....all fine. Rear sensors all making a faint clicking. Get the non stop scream of the sounder 75% of the time but other times all is fine. Took the front n/s wheel off. No reversing switch ( Have an Auto CTD) and loads of the threads say how cheap a switch is, but few if any (I obviously missed them) say that there isn't one on an auto box. Fuses seem fine. Disconnecting battery hasn't helped. At the impact bar behind the bumper the wiring is neatly taped up and dry and goes through the bodywork via rubber grommit that clearly keeps it in place and not chafing (I looked) So what is it that is causing this................ it used to be 20% of the time but now it's nearing 75% Can I access the wiring from inside the boot, if so where is best place. All connections to the ECU in the boot checked and re seated. Bit fed up of the noise so helf for me too please.

10th April 2010, 17:08	#3
kevineds Gets stuck in ZT 260 SE,ZTT CDTI & ZT160+ Join Date: Feb 2010 Location: Wrexham Posts: 537 Thanks: 24 Thanked 13 Times in 8 Posts	Scratched my head for a while with mine, wiring was ok, control unit ok all the sensors 'clicked', still not working.. This probably sounds weird but touched each sensor in turn could feel the 'vibration' of the 'clicking' but one sensor seemed weaker- changed that sensor and hey presto all working

10th April 2010, 18:11	#4
2Diesels Trader ZT 260SE, Connoisseur CDT Join Date: Mar 2009 Location: The Ancient Shire Of Bedlington Posts: 12,597 Thanks: 68 Thanked 506 Times in 305 Posts	Untape the wiring harness a few inches from the multi plug (bumper side) & there will be 2 bunches of wires with blue tape round them, peel the tape away & check the joints in the middle aren't rotten, mine were, stripped the wires back & used heat shrink connectors & taped it all back up & been spot on ever since Regards Col

12th April 2010, 05:34	#8
roverdog Regular poster Rover 75 2.5 Connoisseur SE Join Date: Feb 2010 Location: Leicester Posts: 67 Thanks: 0 Thanked 2 Times in 2 Posts	I had a similar problem some time ago. It turned out that ONE of the sensors had failed. I had no means of checking at the time so I replaced the lot and the problem was cured.

21st April 2010, 17:28	#9
Tam Posted a thing or two 05 ZT+, 04 ZT+, 64 P6 2.0, 74 P6 V8s, 75 P6 V8, 92 214Si, 04 25 Td, 02 Defend , 05 ZR 105+ x2 Join Date: Dec 2008 Location: Kirriemuir Posts: 1,319 Thanks: 701 Thanked 203 Times in 136 Posts	Now Fixed . Ok had another go today , took loom out and decided to strip all tape off and inspect all wires , turned out Colin was spot on in his reply earlier as soon as i stripped off blue tape from brown wire the whole lot fell apart and was left with just blue corrosion . This is probably a bumper off job for most but as my loom was out when fitting towbar it was easy enough to get loom out just by lyeing underneath car and cable ties to put back in . Some pics of process - HANDY SLOPE ON DRIVE . LOOM OUT CORROSION HOW IT SHOULD LOOK FIXED AND GOING BACK ON CAR __________________ Lagoon, last one built! And Horizon 1 of only 2!....MY CARS

21st April 2010, 22:40	#10
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	Thanks Tam. I will have another go at mine shortly.. ...