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mwillems
Member Since: 06 Jan 2005
Location: Oakville, Ontario, Canada
Posts: 154
 
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I just started my LR3 which had been sitting at Toronto airport for the day, in a covered but cold garage.
All the warning lights came on red or flashing. The handbrake applied by itself (I do not use it when it is cold). The gearing went to LOW all by itself. The display said "HDC Fault - System Not Available". Chaos!
It took me two restarts (key out) to get it all working again. So.. intermittent electrical faults haunt my LR3.
I am not worried if they are solved, and LR have been very good in solving the issues. But by now I am starting to think "replacement car" may soon be in order. What say you all?
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 11th Mar 2005 12:29 am |
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FamilyMan
Member Since: 10 Jan 2005
Location: UK
Posts: 119
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It is a fault, it registers and records as a fault and if they can't fix it you have the right to change. Nobody can tell you if the replacement wouldn't have the same problems but this website does go someway to helping you anticipate that given all the similar problems here. At least you'd have a fresh car. Really it's down to you whether given the odds your prepared to gamble with your time/energy/patience. If it's not too much inconvienance to challenge them...go for it. 2005 TDV6 SE Silver/Black Manual + Alpine
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| 11th Mar 2005 8:50 am |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26772
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I think you have some justification. What does your dealer say to this latest failure?
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| 11th Mar 2005 3:14 pm |
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Smarticus
Member Since: 01 Jan 2005
Location: Northumberland
Posts: 655
 
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Sounds like the same thing I have just posted on "Start up probelms" and the route cause is the effect of a heavily loaded battery on a cold day giving a low voltage output that causes the electric systems to trip over themselves. I suggest Landrover should be asked to put forward a permanent fix for this issue, and it may be as simple as fitting a better battery (or possibly higher output alternator). Disco 4 TDV6HSE
Defender 200TDi CSW
RR Evoque
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| 12th Mar 2005 11:42 pm |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26772
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If low volts is the cause, then bigger batteries or alternators are not going solve the problem.
The alternator regulates the voltage on the vehicle. It will regulate volts regardless of battery state, and has more than enough capacity to cope with all the electrics and more. The problem is volatge stability.
If you carefuly look at the lcd display in the dash, with the lights on, and rev the engine, you will notice that it dims momentarily when the revs drop. This is because the built in regulator has to compensate for the dropping revs. All alternators do this, and most cars will demonstrate this phenomenon.
Maybe the problem is that the ecu's can't cope with the fluctuation. Do you remember the early days of computing, when we all had to use filtered sockets etc. or the computer would do its nut, and the supplier always blamed " well sir, you must have had a spike on the mains or something" Modern computers have much more robust power supplies now, and voltage stability is no longer an issue with most pc's.
Well I reckon LR may have this problem with the ecu's. The only solution may be additional voltage stabilisers, or replacement ecu's, but don't hold your breath!
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| 12th Mar 2005 11:54 pm |
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Smarticus
Member Since: 01 Jan 2005
Location: Northumberland
Posts: 655
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Gareth, you clearly know a whole lot more about electricity than me (hell I am a humble bean counter - aka accountant). However I do know that on my Defender, the volt meter that I have on the dash, will read low (down to 10v) on a cold morning start up whereas it will read up to 14v on a warm start up.
Batteries don't enjoy the cold (I have just returned from a skiing trip in Austria where it was minus 25 degrees c some days and the battery on my Nokia read zero, but warm it up and the power came back) and a car battery cranking cold oil whilst powering lots of accessories, will surely take the voltage output down. In the defender if I am running both winches simultaneously I used to have to fit a very high CC rated battery (cold cranking) & still rev the nuts out of the engine to keep the voltage up to snuff. Now the winches run on a seperate 24volt system and nowts the bother..... Disco 4 TDV6HSE
Defender 200TDi CSW
RR Evoque
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| 13th Mar 2005 12:07 am |
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DiscoDuck
Member Since: 23 Jan 2005
Location: West Sussex UK
Posts: 126
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My TDV6 has been to Poland and Austria skiing and never had a problem with the cold and I collected my car 11th November! D4 HSE
Blue
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| 13th Mar 2005 8:39 am |
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Keith Walshe
Member Since: 28 Feb 2005
Location: Sydney
Posts: 53
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Disco 2 has a similar problem. There is no reson that it cannot be fixed. All LR has to do is insert a small buck / boost DC - DC converter between the battery and the supply rail to the ECU etc. This will ensure a stable DC rail irrespective of normal battery terminal voltage variations.
Even easier would be for the ecu to ignore all these warnings untill the battery voltas come up after starting. It might need a bit more complicated logic ie not displaying a range of warnings for x seconds after engine start.
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| 14th Mar 2005 4:08 am |
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mwillems
Member Since: 06 Jan 2005
Location: Oakville, Ontario, Canada
Posts: 154
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And not just warnings: my car actually went into low gear AND applied the handbrake all by itself. That is clearly not acceptable.
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| 14th Mar 2005 8:49 am |
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