Anyone know what the acceptable voltage range is for the D3 TDV6 (HSE) battery? I have been having various error messages at start up & starting the engine has been a struggle - a plug in bluetooth unit gave a hint as to the problem when it showed a low voltage warning, but even with all accessories etc switched off the problem remains. Temperature has been around minus 5C here though. I have a voltmeter currently attached to the battery with plug in cables to allow it to be plugged in & out without touching the car & it is showing some apparently low voltage.
Also, although I can't get to the manual in the car without unlocking which will probably cause a voltage drop & spoil the monitoring, I recall that there were 2 different battery specs available (?) - would be interested to know what rating other members' batteries are.
Thanks.
26th Dec 2006 9:47 am
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701
Hi Ecosse, I think TFC will know for sure, but I suspect if its dropping below 12v when the car is stood doing nothing then the battery is u/s. I believe that Land Rover are aware of some faulty batteries.
Why don't you give LR Asssist a call, tell them its going flat all by itself. I accidently flattened my battery a few months back, and the LRA engineer told me that there had been a number of cases of duff batteries.
Or maybe she just needs good run. Mine gave me a load of errors yesterday when I started it up to swap the cars on the drive around, it has not had a good run for a few days now.
Battery should be putting out between 13.8 and 13.4 volts, any less than that and it needs a top-up charge or is duff.2006 G4 Challenge Support Vehicle
26th Dec 2006 8:59 pm
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
dependent upon temperature, the vehicle battery should be >11.8 VDC with no load and any surface charge removed, anything less than 10.5 VDC under cranking indicates a discharged or faulty battery and will induce 'errors' in the vehicle subsystems
Minimum charge voltage is 14.2VDC, Maximum is 15.6VDC both are temperature and load dependent (load can include recharging the battery) anything outside of this range indicates a defective charging circuit or drive belt - note that the charging circuit includes the electrical connection and in the case of the D3, the engine control unit and the ATCU.
low state of charge is not always cause by a 'fault' but can also be the result of cumulative discharge.... it take approximately 7 miles of diving with engine revs >1500rpm to replace the charge consumed by starting the engine
26th Dec 2006 11:40 pm
DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
10forcash wrote:
it take approximately 7 miles of diving
That's a long way down.......
Surprised I've not had problems - my daily journey's usually only 7.5 miles (one-way) with heated seats/air con. Today was the first time it failed to start on the first turn of the key...Disco 5 HSE Lux
https://www.youtube.com/watch?v=peyiqaJrmMU
26th Dec 2006 11:57 pm
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
why have the heated seats and the aircon on? Like I said, it's cumulative, you're probably just about topping it back up although one it's discharged to a point where problems start to happen, only a bench charge will recover the battery
27th Dec 2006 12:01 am
SN
Member Since: 03 Jan 2006
Location: Romiley
Posts: 13710
heated seats and aircon on? laziness like me I guess - I have the aircon on permanently (probably explains the sh*t mpg) and use the seats on cold morningsSteve N | 21MY Defender | 08MY Discovery 3 (history) | 06MY Discovery 3 (ancient history)
Member Since: 03 Jan 2006
Location: Romiley
Posts: 13710
My commute is only about 7 or 8 miles too - on Mondays/Fridays - often its a lot less - so I'm surprised I've not problems tooSteve N | 21MY Defender | 08MY Discovery 3 (history) | 06MY Discovery 3 (ancient history)
27th Dec 2006 12:14 am
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
qzdcg8 wrote:
heated seats and aircon on? laziness like me I guess - I have the aircon on permanently (probably explains the sh*t mpg) and use the seats on cold mornings
Will make no difference on or off. D3 designed to run with it on by default (why it does).
27th Dec 2006 12:32 am
SN
Member Since: 03 Jan 2006
Location: Romiley
Posts: 13710
Even so - you don't get something for nothing - switching off the aircon WILL improve the MPG - even by a teeny teeny bitSteve N | 21MY Defender | 08MY Discovery 3 (history) | 06MY Discovery 3 (ancient history)
27th Dec 2006 12:37 am
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
not in any way that would make it worth your while.
27th Dec 2006 12:38 am
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701
I have been keeping the 'Econ' function on for a couple of weeks now. Main reason is the ac is getting noisy (dealer disagrees, but thats for another time), and econ calms it down.
I have not noticed a big difference in mpg.
27th Dec 2006 12:42 am
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
It's important to use the aircon at least a few times a week to prevent mould growth ....so I understand 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
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
That's a long way down.......
| 08MY Discovery 3 (history) 
(same journey, summer/winter - sorry, summer or winter) 
