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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
  
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Would these problems account for the car not being level when it's running?
Thanks for your help, really don't want to give the car back as it was the car with the best condition I saw in over a month of looking.
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 5th Mar 2010 10:13 am |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1144
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Let me just get this correct before offering a reply.
Is the suspension unlevel when engine running & doors closed?
Does the suspension drop overnight on it's own?
What was the first thing to bring you to notice the fault?
Do you know what codes were stored already?
Regards
Steve
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| 5th Mar 2010 10:42 am |
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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
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THe car is not level with the engine running and the doors closed, and the heights are random. If I leave the car overnight, there is no noticable difference (although sometime I hear and see one of the corners release gas and the suspension drops, but I've seen others do this).
There have been no suspension error codes at all.
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| 5th Mar 2010 11:52 am |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1144
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& it appears to be the front driver's side that appears wrong?
Which sensors have you had renewed & was it recalibrated on sensor renewal?
what other work has been done so far?
sorry for so many questions, but when these suspension jobs aren't straightforward it's best to have the most info you can before jumping in 
Regards
Steve
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| 5th Mar 2010 12:32 pm |
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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
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I’ll start from the beginning:
My wife picked up the car just after we bought it before Xmas. I got home from work and noticed straight away that the car seem lob sided, so measured the gap between wheel and wheel arch and found that the front right was lower than the rest. Called the garage where we bought it from and arranged for the car to go into a specialist, they found a fault (we had no warning light) on the front right hand sensor and replaced it, they did not calibrate it (they said it would sort itself out after a few days of driving). It didn’t get sorted so it went back for calibration, which caused the back wheels to go loads higher than the front (looked like dragster!). They eventually asked me to pick up my car as they couldn’t fix this as my ECU was not taking to their computer. In amongst this period the car had other faults that have been fixed via the garage I bought the car from, these include: front mirrors not folding in, front passenger seatbelt warning light, rear seat clip problems, parking sensor problems, intermittent cruise control failure and a rogue orange parking brake light. Most are now fixed. The software has also been updated?
So with my dragster LR I gave it back to the place I bought it from and asked them to sort it, so it went to another specialist who re-calibrated it, and it left their garage level apparently. By the time it was home, it was unlevel again (although not like a dragster). At this point, losing all hope I booked it in at the local main dealer who concluded that there is a leak in the system (v small), so we should keep driving it until it develops a full fault. I pointed out that I thought this was unsafe, and they were surprised to hear that it’s not level when driving it. They have now suggested leaving it with them for a day as they are ‘certain they’ll find the problem’. I paid for the last main dealer diagnostic and the new one will be 6 hours, so a little more expensive, with no guarantees that they’ll solve the problem! I think that brings us up to date.
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| 5th Mar 2010 12:54 pm |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1144
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Right. I'm a little bit concerned at the 'leak' diagnosis, as if the rest of the system was ok, everything would be level when running, as the reservior & compressor would keep things level unless a major leak (which you would hear) was using the air quicker than it could be pumped up. To give dealers their due, they are very much trained to read the test equipment & then renew items, keeping the diagnostic time as low as possible, (thus labour costs), which in many cases works, but in some instances longer time needs to be spent in the right area, with someone thinking logically.
You need to find someone you can trust to look at the vehicle, the live data from the height sensors needs to be looked at closely. My guess is you have a wiring loom fault in connection with the front righthand sensor, most likely on the connector behind the front LH wheel arch, in your case C2293 + C2294 pins 1, 2 or 3.
Check for green corrosion after the connector, where the loom is covered in dirt thrown up from the wheel. The corrosion will be in the loom wiring itself, about 3 inches from the connection.
My guess (& can only be a guess as internet diagnosis is sketchy at best  ) is that the feed to the sensor is breaking down slightly, or the return from the sensor, this gives a false reading to the ecu (although the ecu shows the feed from the ecu as correct, this is measured at the ecu, thus can breakdown along the way.
The sensor value can be seen to change erratically on the faulty circuit, especially when the height is changed, or jumps when stationary. This causes the recalibration to be of the wrong height, & also a variation in height on the faulty sensor circuit.
This can be very difficult to track down, as the first one I saw took me quite a while to trace, but it is repairable when you know where to look. I would suggest you have a word with the person who supplied you with the car to reach a compromise on cost involved
HTH
Regards
Steve
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| 5th Mar 2010 1:26 pm |
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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
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Thanks Steve, is the connector on the wiring loom easy to find?
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| 5th Mar 2010 2:34 pm |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1144
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Remove the rear of the front LH (passenger) inner arch liner & you can see three big connectors, the wiring below them is actually visible with the liner in place, the bits covered in mud. You might find it easiest to take off the chassis bracket (three bolts) to see the wiring properly.
While we are talking of this, those with an earlier vehicle (05-06) might want to think about putting a mudflap (we use a discovery 1 rear flap) at the lower edge, to prevent the mud & salt reaching the wiring.
Regards
Steve
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| 5th Mar 2010 4:07 pm |
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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
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For those who may be interested, since my last post we had the disco back in the main dealer for two days, where they claimed to have checked the suspension and concluded that there are no leaks (contra to their earlier diagnostic) and that the wiring is fine. They then decided to reboot the entire ECH to original factory settings, which they believed solved the problem. We went to pick it up again and sure enough the suspension was level. But, you’ve guessed it, after a day of driving it around, it’s unlevel again.  I think I reached the end of the road on this one... Either the main dealer has not done what they said they have or the car’s a dud.
Thanks for all the help though.
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| 19th Mar 2010 9:56 am |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1144
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Quote:They then decided to reboot the entire ECH to original factory settings, which they believed solved the problem
Why would they think that would cure the problem?.
My bets are still on a sensor wiring issue.
Regards
Steve
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| 19th Mar 2010 11:53 am |
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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
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They claim that they've checked the sensors and connections and I have no idea why they believed the re-boot would solve the problem? We called again and asked what they thought and they said the only other thing they could do is drive it around for a few days with a computer attached to see if that picks anything up. Not going to do that though, wasted enough time!
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| 19th Mar 2010 3:09 pm |
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Adigorn
Member Since: 14 Mar 2010
Location: Birmingham
Posts: 546
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its quite sdifficult to diagnose the faulty sensor as soon the sensor is reading somthing for the ecu its very true
usualy all u can do is get on ids is the real time high reading (ecu is convinced everything is ok)
when wehicle is at normal hight all the sensor should read same around 0 value
so with unlevel issues they should start with air suspension calibration (car wont do it itself no matter how long u drive)
now what could it be?
it coul be mechanical fault bent linkage, or damaged suspension part
faulty high sensor (not always the one connected with lowered corner)
valve block connector
it might be hightsenor arm opositly directed
wiring connector etc
The High calibration is essential for u they HAVE to do it with any work corelated to air susp.
its not their good will but Land Rover PROCEDURE
u can hardly fix it until the Calibration is not Caried out
By the way properly caried out procedure takes around 0.5 hrs why they insist on not doing it?
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| 20th Mar 2010 8:53 am |
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Haggis
Member Since: 26 Jun 2006
Location: Sydney
Posts: 126
 
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Sorry to sidetrack this post...
Mr D,
The HDC error and suspension lowering thing you had... What were the circumstance when it happened to you?
I am currently experiencing the following:
While driving at speed (90+ km/h) on paved roads and using the cruise control, I get the following messages:
HDU failure, then seconds later
Special Programs not available, then seconds later
the Suspension drops to 'car park' height
I can clear the errors by pulling over, switching off and restarting, sometimes the error sequence will reoccur almost immediately and sometimes not for some time. So far I haven't observed the error sequence when not using the cruise control. I do have the factory rear locker.
Sound familiar?
Thanks
Haggis D3 (06) SE TDV6, Rear Locker, Rear Air, ARB bar w/winch, Safari Snorkel, 110l aux fuel tank, Kaymar rear bar (twin wheel carrier), Black Widow rear storage system, Rhino rack, GME UHF, Codan HF, IPF HID lights, CSA Explorer 17" w/BFG Mud Terrain KM2 - see Australian 4WD Monthly #103
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| 22nd Mar 2010 2:27 pm |
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nigeram
Member Since: 28 Feb 2010
Location: North East
Posts: 12
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Just to up date you all, problem now fixed, after three independent specialists and a main dealer failed to fix the problem, finally took the car to T & S Norman in Somerset and it’s now fixed. Can’t recommend this LR specialist enough! Although it’s quite a long way from Darlington…
Thanks for all the assistance on this thread.
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| 7th Apr 2010 3:05 pm |
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ukdave104
Member Since: 31 Jul 2007
Location: Stonehaven
Posts: 266
  
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And the problem was 
2014.5 Discovery 4 HSE in Corris Grey Metallic - arriving this week.
2011 Range Rover Vogue 4.4 TDV8, now departing
2012 Freelander HSE SD4 Auto - Mrs UkDave104's Toy.
2010 Discovery 4 XS - gone
2008 Discovery 3 HSE - gone
2007 Freelander 2 GS TD4 - gone
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| 7th Apr 2010 6:39 pm |
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