Member Since: 24 May 2010
Location: suffolk
Posts: 25
Reversing sensors
Hi all,
My reversing sensors have packed up. When I turn the ignition on I get an amber flashing light from the button on the dashboard (the light can't be switched off until I put the car in gear and drive off) but there is no audible alarm at all.
A LR engineer told me the first test is to get someone to put the car in reverse with the engine running whilst I touch each sensor in turn. They should gently vibrate. I have done that and they do vibrate.
Any ideas on what to check next ?
Thanks in anticipation.
27th Jan 2020 3:28 pm
Kilovolt
Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1020
A suitable fault code reader (live data) would tell you which sensor is 'playing-up'. Takes the guesswork out of finding the culprit. Do you have access to such a tool?
I had the same and it turned out to be moisture in the wiring loom (there are various connectors behind the bumper which are a pain to access with the bumper off in some cases). Once dried out and sealed with heat-shrink the issues were resolved for me.
Just a thought.............. Good luck."Track day running - Don't put your foot back on the accelerator until your absolutely sure you don't have to take it off again"
Current Ride: D4 XS Commercial Baltic Blue SDV6 fully loaded with heated everything
Track Days: BMW E36 M3 Evolution MY 1996 (3.2 Litre 377 BHP sat in 1,250 Kgs of car, with a pro safety cage and some serious braking power)
27th Jan 2020 3:35 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10367
95% chance the speaker has failed in the rear left panel if you never get any noises
Member Since: 10 May 2015
Location: usually at my Indy's shop
Posts: 62
easy way to check them . is to turn the on and listen closely - they should click
A few months ago I had the same symptoms as you. Two of them failed and my indy said that it's best to change all four of them with the loom because it is just a matter of time when the other ones fail. It is all due to the tornado of moisture (in winter with salt) causing those problems
28th Jan 2020 12:15 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10367
IF the speaker doesn't work, then the system is pointless.
It should at least give an error tone or distance tone at some point if its working
28th Jan 2020 1:12 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Pete K wrote:
95% chance the speaker has failed in the rear left panel if you never get any noises
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Pete K wrote:
IF the speaker doesn't work, then the system is pointless.
It should at least give an error tone or distance tone at some point if its working
Got to sort mine out and does just that, amber light flashes on the dashboard and the speaker gives a constant tone for a few seconds
Done some checking and it’s the loom so got to take the bumper off
28th Jan 2020 2:45 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10367
Good find
Didn't know they sold the internal bit only
28th Jan 2020 6:23 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
gstuart wrote:
Pete K wrote:
IF the speaker doesn't work, then the system is pointless.
It should at least give an error tone or distance tone at some point if its working
Got to sort mine out and does just that, amber light flashes on the dashboard and the speaker gives a constant tone for a few seconds
Done some checking and it’s the loom so got to take the bumper off
Its ten minutes work to get the bumper off and a good time to clean away all the crud behind it
28th Jan 2020 7:38 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Pete K wrote:
Good find
Didn't know they sold the internal bit only
28th Jan 2020 7:59 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
aja4x4 wrote:
gstuart wrote:
Pete K wrote:
IF the speaker doesn't work, then the system is pointless.
It should at least give an error tone or distance tone at some point if its working
Got to sort mine out and does just that, amber light flashes on the dashboard and the speaker gives a constant tone for a few seconds
Done some checking and it’s the loom so got to take the bumper off
Its ten minutes work to get the bumper off and a good time to clean away all the crud behind it
I’ve heard about those 10 x min jobs
Bless u as I did have a brief look at the instructions removing the bumper and seemed a lot longer , also found someone in the past has used half a ton of silicone to hold some of the loom connectors onto the sensors , so don’t know if it may be worth replacing the sensors at the same time
Got the new loom and some more Dinitrol so indeed an ideal to time to clean it all up
Plus hopefully the new pliers I got will help get the plastic fittings out easier and got some more bits for my dremel
28th Jan 2020 8:05 pm
markagj
Member Since: 03 Dec 2015
Location: Wrexham
Posts: 175
“Done some checking and it’s the loom.”
What checks did you do to come to the conclusion that the loom is the cause of your problem, please?Discovery 4 HSE SDV6
Land Rover series 3 2.5 Petrol
29th Jan 2020 8:38 am
Sea Raider
Member Since: 01 Nov 2016
Location: None
Posts: 4450
gstuart wrote:
aja4x4 wrote:
gstuart wrote:
Pete K wrote:
IF the speaker doesn't work, then the system is pointless.
It should at least give an error tone or distance tone at some point if its working
Got to sort mine out and does just that, amber light flashes on the dashboard and the speaker gives a constant tone for a few seconds
Done some checking and it’s the loom so got to take the bumper off
Its ten minutes work to get the bumper off and a good time to clean away all the crud behind it
I’ve heard about those 10 x min jobs
Bless u as I did have a brief look at the instructions removing the bumper and seemed a lot longer , also found someone in the past has used half a ton of silicone to hold some of the loom connectors onto the sensors , so don’t know if it may be worth replacing the sensors at the same time
I removed the rear bumper from the Scrapper last week and have to say was a lot easier that I though it was going to be, you need to remove or at least get in behind the rear inner wheelarches and arch trim to release a popper each side but thats probably the hardest bit, then a couple of bolts and screws, 10 is a bit optimistic I'd say, best to set aside 11 to be safe
29th Jan 2020 9:07 am
stew 46
Member Since: 01 Dec 2011
Location: cornwall
Posts: 10146
I’m not fixing mine because Julia won’t drive it without them -------------------------------------------------
if you cant hold on dont let go , it ill come in handy for something even if you never use it.
D3 SE 05,
110 s wagon 300 tdi SOLD
h top transit
crew cab transit
transit connect
ausa dumper, muck truck .
peljob 2.5 digger
06 L 200 crew cab
29th Jan 2020 9:29 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
markagj wrote:
“Done some checking and it’s the loom.”
What checks did you do to come to the conclusion that the loom is the cause of your problem, please?
Hiya
Used a multimeter to test continuity from the connectors to each end, found a break in 2 x wires but will have to remove the bumper to find the breaks, but bought a new loom as it’s in a mess with silicone all over the connectors
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum