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Dave34
Member Since: 05 Jul 2009
Location: Somewhere in the Midlands
Posts: 196
  
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| Help, HDC goes then car lowers at speed |
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When driving for a bout 2Hrs the H.D.C inables then the car lowers.  So i pull over turn the car off, start it up again and every thing is fine.  Any ideas people.
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 20th Mar 2010 5:20 pm |
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Haggis
Member Since: 26 Jun 2006
Location: Sydney
Posts: 126
 
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OK, seems we are experiencing similar problems....
In my case the syptoms are:
HDU failure in the message centre, then a short time (seconds) later, Special Programs not available, then another short time (again seconds) later the suspension lowers to car park height. It ONLY happens when zipping along using the cruise control between 90-110km/h. If I drive at these speeds without the cruise control everything happens as per normal.
I was thinking wheel speed sensor faulty as this is used by all these systems as an input, and I had one that was 'scuffed', when a rear wheel bearing failed. The diagnostic computer at the service agent seemed to suggest this was a reasonable diagnosis. I had the relevant wheel speed sensor replaced (part was ~$90, labour undetermined as yet). Alas the syptom still exists...
Now I'm waiting for another opportunity to hook it to the service agents diagnostic computer for a look at codes. But they are showing a distinct lack of enthusiasm given this could take a while to chase down and they are feeling very unsupported by LRA...
I'm wondering if it is worth it to try and reload the cruise control software? Is it even possible to do this?
Ideas would be welcome.
Better still if you have been here, what fixed it?
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 2:16 pm |
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djhampson
Member Since: 23 Sep 2007
Location: Brisbane
Posts: 7
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Is your steering wheel straight when the car is travelling straight ahead?
My steering wheel moved a few degrees off straight ahead and then I started getting the fault messages you mentioned and the suspension going down. Stoping and starting the car would enable me to drive on.
A simple wheel alignment sorted out the issue.
Edit: When LR hooked the car up to the diagnostics computer... there was a Steering Angle Sensor fault.
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| 23rd Mar 2010 4:31 am |
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irishrover
Member Since: 18 Aug 2008
Location: The Treaty County
Posts: 361
 
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Dave34,
i had same problem saturday after i got the disco tracked. have been and out of dealers this morning, steering angle sensor was out. so you could have similar problem seen as my disco suffered same symptoms as yours.
ian.  07 Discovery 3 TDV6 Commercial (Java Black) with:
Gone but not forgotten.
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| 23rd Mar 2010 11:39 am |
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Haggis
Member Since: 26 Jun 2006
Location: Sydney
Posts: 126
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As it happens the steering wheel is out of whack and I have already complained about it especially since it's last visit for service included a wheel alignment. It's agreed it needs to be fixed, just a matter of when...
Elsewhere on the forum other possible causes have been listed as:
1. Low battery voltage
2. brake pedal switch
3. Left Front wheel speed sensor (I get the logic for WSS, by why left front?)
4. Non genuine brake globes - whoa!
5. High pressure fuel pump - now that one is left field, but I do remember having the transfer box computer changed because the alarm kept going off sometime during the warranty...
I'm going to try and work these through one at a time until the fault stops. At least I'll know what fixed it for me, however it seems it might not be that same for every D3. Battery is charging as I write... 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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| 23rd Mar 2010 3:14 pm |
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irishrover
Member Since: 18 Aug 2008
Location: The Treaty County
Posts: 361
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Just to add to what haggis has wrote about the possible symptoms, I checked all the cell's in the battery when i first read about the possible causes and the levels in the cells are ok even after 2.5 years, so ruled that out straight away as being the problem with mine.
my steering wheel is still abit off but hope to get it sorted the weekend. as stated above, i got my problem sorted this morning so its  again..
ian. 07 Discovery 3 TDV6 Commercial (Java Black) with:
Gone but not forgotten.
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| 23rd Mar 2010 5:51 pm |
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Dave34
Member Since: 05 Jul 2009
Location: Somewhere in the Midlands
Posts: 196
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Thanks 4 the info, gives me something to look at. Think its going to a dianostics to see what faults it comes up with. 
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| 26th Mar 2010 11:44 pm |
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Haggis
Member Since: 26 Jun 2006
Location: Sydney
Posts: 126
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It's definitely NOT a low voltage scenario for me - now I'm waiting for the servce agent to arrange another wheel alignment (the steering wheel is askew) and attach the diagnostics PC where, hopefully, steering angle sensor will show up as a culprit.... 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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| 28th Mar 2010 1:32 pm |
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Bob.
Member Since: 05 Apr 2009
Location: 52�N 2�W
Posts: 94
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Had similar problem last year when in cruise of HDC, Special Programs and cruise unavailable + suspension lowering (although it didn't) messages. Fault cleared each time after turning ignition off but came back again after a few more miles in cruise. No fault though if cruise was not used.
Turned out to be steering angle sensor calibration. Apparently the yaw sensor was saying the car was travelling in a straight line but the steering angle sensor said it was going round a bend so after registering this conflict a certain number of times the system called enough. Recalibration cured it until the next time the steering wheel was put off centre after work was done. Apparently it takes about 35mins to go through the calibration procedure so maybe dealers sometimes skip it if a computer isn't available.
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| 28th Mar 2010 9:52 pm |
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raftrey
Member Since: 29 Oct 2006
Location: wigan
Posts: 59
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The dealers equipment must be as crap as people say then, 10 for cash reset mine in about 35 SECONDS 
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| 29th Mar 2010 10:13 am |
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PaulC
Member Since: 27 Nov 2009
Location: Vale of Glamorgan
Posts: 112
  
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mine did similar cpl years ago- LRA took it to dealer- spent a week there- got it back to have it doing same again
turned out to to dodgy brake light bulb i replaced few weeks earlier- sourced from well known high st store beginning with H
not happened again since stuck to high quality bulbs
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| 29th Mar 2010 11:31 am |
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Haggis
Member Since: 26 Jun 2006
Location: Sydney
Posts: 126
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After some disappointment in the NW of the country (service agent reckons the steering wheel could not be made to point direct ahead, and they couldn't get the diagnostic computer to work), I have since had the problem repaired.
Steering wheel points direct ahead and the steering angle sensor was calibrated - error gone.
Pity I had to drive ~5000km to find someone who could do it. The D3 is a good product that is let down in Australia by a lack of investment by Land Rover to support it outside of the major cities. 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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| 8th Jun 2010 1:28 am |
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Darryl
Member Since: 20 Dec 2009
Location: oldbury West Midlands
Posts: 1207
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Had same symtoms myself a month or so ago turned out to be a brake light switch ,changed it problem solved
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| 8th Jun 2010 10:07 pm |
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Dave34
Member Since: 05 Jul 2009
Location: Somewhere in the Midlands
Posts: 196
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Evening,soz for the deley in getting back, im off to L R on Friday comin (9th) to let them have a look at it. they going to have a look as the fault codes dont say any componets are knacked. so its off early for a bit of a cane  i mean drive to see if it dose it before it goes in. Got a loan car when its there, a volvo couldnt of been a D4
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| 2nd Jul 2010 9:51 pm |
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