Member Since: 06 Jun 2013
Location: Margate
Posts: 134
Parking Sensors
Hi,
My Parking Sensors are playing up. They do this from time to time but a car wash seems to resolved except this time a car was is not resolving the issue. Is there anything obvious I can do to check?
Basicly when I put in revers they beep continually as if I am too close to a parked car when in fact im not.
Thanks in advance.Discovery 3 HSE MY2006 - On the very edge of Kent known as Sunny Margate
17th Jul 2015 6:58 pm
parrafin23
Member Since: 04 Dec 2011
Location: Buskeud
Posts: 681
Wel.. if you aint got a diag tool then you have to do it the hard way.
I guess its one of the rear ones? does the beeping comes from back or the instrument cluster?
Remove the LH rear lamp cluster and have a look at those connectors you find there. look for evidence of water. thats the easy check. Order up a new parking sensor that fits the rear. undo the bumper and unplug one sensor and connect it to the new one. check to see if the beeps are there nor not. if its still there, plug in the old one and continue to the next one untill the beeps are gone, then you have found the fault sensor, put all back together and jobs done.
It might be the wiring, but I doubt that cause of your description.
This happent to me. it was the Right Outer Rear on mine..
Mr.P
18th Jul 2015 10:01 am
HughMartin
Member Since: 30 Mar 2008
Location: Aberdeenshire
Posts: 751
I had intermittent rear parking sensors on my D3. Turned out to be a corroded wire in the loom. Easy to change once you have the bumper off. Good chance to give The back of the bumper a good clean.
18th Jul 2015 10:33 am
MrHolloway
Member Since: 06 Jun 2013
Location: Margate
Posts: 134
Its the rear ones for sure. Ill check the connectors behind the light cluster that's easy. Removing the bumper sounds a little more like a garage job me thinks Discovery 3 HSE MY2006 - On the very edge of Kent known as Sunny Margate
18th Jul 2015 10:34 am
MrHolloway
Member Since: 06 Jun 2013
Location: Margate
Posts: 134
Just took off the LH Rear Light Cluster. Had a look at the connections and all seem OK and Clean Dry and Dusty. I'm guessing its a Sensor that needs replacing. Ill order one and see if the Garage can resolve? Bumper looks a mission to remove and fit?Discovery 3 HSE MY2006 - On the very edge of Kent known as Sunny Margate
18th Jul 2015 10:59 am
chrisjheaton
Member Since: 04 Sep 2013
Location: Northumberland
Posts: 101
With ignition on and in reverse (engine not running of course), you should be able to hear them clicking as you pass your hand in front of each one individually.........
the one that isnt clicking should be the culprit.2009 spec D3 HSE
GG AT2
Midland 121 CB
D4 LED Black rear lights
D4 Beanie grille
Permagrin
18th Jul 2015 12:31 pm
House
Member Since: 18 Mar 2006
Location: Essex
Posts: 68
QQ - If they all 'click' ok does that definitely mean they are working and it's the loom? Or is it possible for them to click and still be faulty?Finally got one......Silver HSE.
21st Jul 2015 12:34 pm
MrHolloway
Member Since: 06 Jun 2013
Location: Margate
Posts: 134
Still got the issue and its becoming a real pain for me! So reading some other posts theres other things to look out for. Putting in Reverse and listening close to each sensor. All of them are clicking so seems the sensors are doing their job? No Flashing on the Parking Sensor Button.
Really Frustrating :SDiscovery 3 HSE MY2006 - On the very edge of Kent known as Sunny Margate
16th Aug 2015 1:13 pm
DaveDisco3
Member Since: 29 Apr 2014
Location: Gretton, Northamptonshire.
Posts: 597
What is your warning and do you also have front parking sensors?D3 Tonga HSE 2005
Sport body kit
Beanie grille
LED interior lights
LED side lights
De-tango
IID Bluetooth
Icarsoft i930
Clock on dash
Three flash indicators
16th Aug 2015 2:12 pm
MrHolloway
Member Since: 06 Jun 2013
Location: Margate
Posts: 134
I do have front sensors and they work fine. No Warning... Just when I put in reverse it just beeps continualsy. Sometimes they work OK and sometimes they beep as if I am pulling up close to something but I'm no where near anything :S
All 4 are clicking if I put my ear to them :SDiscovery 3 HSE MY2006 - On the very edge of Kent known as Sunny Margate
16th Aug 2015 2:53 pm
DDDad
Member Since: 10 Jan 2015
Location: Angus
Posts: 1201
Select reverse and find the bite point on the clutch. If the system detects a fault it should:
a) Give a long, loud single tone (to warn you not to trust the PDC) which only lasts a few seconds;
b) Flash the LED on the dash switch (assuming the LED is not blown);
c) Perhaps flash up a message on the info. display telling you whether the fault is front or rear.
If none of this happens, and all 8 sensors are clicking, and what you hear is the same tone you get when something is near, then the control unit clearly thinks the system is fine (or is faulty itself). It's as if there's grease or water in/on one of the sensors and the ultrasonic pulses really are bouncing back, even when there's no obstruction near. You could unclip the sensors and check whether any are damaged or letting in water, but be careful to push them inwards to avoid this:
You could substitute one new sensor and see if that clears the fault, but it's tricky, especially if it's intermittent
Chafed wires and/or water ingress into the wiring loom is common, but this usually throws up the error response above. You'd have to remove the relevant bumper, check for visible faults and continuity test each wire in the loom (disconnect the sensors and test for both short-circuits and open-circuits).
Alternatively, you could buy a new loom and 4 sensors and just switch the lot. So long as they're not genuine LR, they are reasonably priced and you'd still save a fortune on dealer labour.
Happy fault finding Went for a job as a human cannonball. Not the right calibre.
16th Aug 2015 7:05 pm
DaveDisco3
Member Since: 29 Apr 2014
Location: Gretton, Northamptonshire.
Posts: 597
Buy my nanocom and it will tell you what is at fault D3 Tonga HSE 2005
Sport body kit
Beanie grille
LED interior lights
LED side lights
De-tango
IID Bluetooth
Icarsoft i930
Clock on dash
Three flash indicators
16th Aug 2015 7:20 pm
Barn1e D3 Decade
Member Since: 28 Aug 2006
Location: Mid-sussex
Posts: 2021
Thought I would add to this thread as I have the following problem:
- Continual beep when reverse selected
- Beeper almost sounds like it is being strangled!
- No faults showing on any sensors
- I can test each for fault detection by creating a fault by disconnecting each (and then clearing faults afterwards)
- All 4 sensors clicking
- Checked continuity on all wires in the loom - all ok
- Checked for any damaged wires as best I can see where they enter the car - the side cubbyhole trim is very close, but looks ok.
So, I think one of the senors is working but thinks something is in front of it.
Unless someone suggests anything more to try I will be giving the areas behind the bumper a clean and does of Dinitrol and putting it back together whilst I order a new sensor or 4 Sods law says I buy 1 and find 2 are faulty.2005, TDV6 S, Auto, 190k miles, owned from new, V8 Brake Upgrade, Nancom Evo, RLD protector, BAS EGR blanking & Remap, separate ATF cooler, changing all the fluids ahead of time.
4th Oct 2015 10:42 am
DDDad
Member Since: 10 Jan 2015
Location: Angus
Posts: 1201
Did you check for shorted wires in the loom or just broken ones?
I've had cheap sensors from the this e-bay seller without a problem: green_parts (1955) I'm sure you could off load any spares on this forum. Went for a job as a human cannonball. Not the right calibre.
4th Oct 2015 11:17 am
Barn1e D3 Decade
Member Since: 28 Aug 2006
Location: Mid-sussex
Posts: 2021
Good thinking DDAD. The loom is still on the workbench. I will test again for any shorts.2005, TDV6 S, Auto, 190k miles, owned from new, V8 Brake Upgrade, Nancom Evo, RLD protector, BAS EGR blanking & Remap, separate ATF cooler, changing all the fluids ahead of time.
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Sods law says I buy 1 and find 2 are faulty.
