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Home > Technical (L322) > Possible Alternator Problem, Advice and Help Please?

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carlos50

Member Since: 03 Feb 2011
Location: North England
Posts: 717

2015 Range Rover Autobiography 5.0 SC V8 Santorini Black

It had only charged for 1 hour or so from being too low to start the FF. I will try a longer charge and see if that raises it to 12v + to see if it helps then if not will get a new one.

I have been quoted £350 by said specialist to fit a recon LR alternator, he seemed quite keen to do the work aswell, doing all he could to convince me it was the alternator.

9th Feb 2012 12:45pm

SAppie

Member Since: 08 Feb 2010
Location: Berkshire
Posts: 159

nicedayforit wrote:
If you have 11.5V on a car battery you have a problem.
A fully charged battery will indicate 12.6V.
I have 3 in the garage sitting fully charged and they all indicate 12.6V and have done for weeks without charging.

I totally agree, but if you attach those batteries to a RR and recheck the voltage after an hour, I can guarantee that you will no longer have 12.6 volts!! MY2007 Vogue SE TDV8 - Tonga Green / Sand
MY2005 Discovery 3 - Silver / Biege

9th Feb 2012 12:47pm

nicedayforit

Member Since: 11 Jun 2011
Location: Beside the Solway
Posts: 3977

2004 Range Rover Vogue Td6 Giverny Green

Then you have a battery drain. Which may or may not cause you problems.
Just out of interest after a run my battery voltage drops to 12.6V after a couple of hours as you would expect but then stays there for the best part of 24 hours.
I then loose about 0.05V per day. Which I have put down to a faulty FSR which I will change when it stops being cold or raining.
I would be seriously concerned if my battery was dropping to 11.5V whatever the timescale.

Last edited by nicedayforit on 9th Feb 2012 1:04pm. Edited 2 times in total

9th Feb 2012 12:50pm

carlos50

Member Since: 03 Feb 2011
Location: North England
Posts: 717

Anyone know of anywhere with a deal on at the moment, or a discount code for somewhere?.

9th Feb 2012 12:50pm

SAppie

Member Since: 08 Feb 2010
Location: Berkshire
Posts: 159

nicedayforit wrote:
Then you have a battery drain. Which may or may not cause you problems.

Both my RR and Disco3 have / do the same thing with new batteries in them. (after standing for a while reflect only around 11.5 volts - maybe the inbilt diag/service util is out of calibration??) No issues at all, both running well. I do however give them a full 24 hour charge once a month, which I guess is rather excessive but works well. MY2007 Vogue SE TDV8 - Tonga Green / Sand
MY2005 Discovery 3 - Silver / Biege

9th Feb 2012 12:56pm

SAppie

Member Since: 08 Feb 2010
Location: Berkshire
Posts: 159

carlos50 wrote:
Anyone know of anywhere with a deal on at the moment, or a discount code for somewhere?.

You can try Dan @duckworth for the original battery, but i think the 110Ah Bosch seems like a better option which i think someone has already given you a link in the first page of your thread.

Good luck MY2007 Vogue SE TDV8 - Tonga Green / Sand
MY2005 Discovery 3 - Silver / Biege

9th Feb 2012 12:58pm

nicedayforit

Member Since: 11 Jun 2011
Location: Beside the Solway
Posts: 3977

I just edited my post above.
I would check the battery voltage terminals with a multimeter or install a voltmeter in the car for a more accurate readout.

9th Feb 2012 12:59pm

SAppie

Member Since: 08 Feb 2010
Location: Berkshire
Posts: 159

nicedayforit wrote:
I just edited my post above.
I would check the battery voltage terminals with a multimeter or install a voltmeter in the car for a more accurate readout.

OK, i took out my multimeter and tested the voltage on both cars after they have both been used this morning but been standing for about 2 hours each.

RR - 12.13 volts
Disco 12.29 Volts

SO then I went into the cars and tested the voltage from the diags screen and both cars reported 11.5 volts.
I did however wake up all the car systems when I opened the door .

Obviously the diags screen only reports in .5 intervals, and maybe the cars both drew the voltage down just below 12 volts and thus it would report 11.5 volts, or it is slightly out of whack.

Moral of the story is that as you say, the voltage should really be checked via use of a multi/volt meter for a true exact reading. The in built diags is useful to get a ballpark reading though. MY2007 Vogue SE TDV8 - Tonga Green / Sand
MY2005 Discovery 3 - Silver / Biege

9th Feb 2012 1:16pm

nicedayforit

Member Since: 11 Jun 2011
Location: Beside the Solway
Posts: 3977

Can't beat an accurate Voltmeter.
A small battery drain generally isn't a problem if the car is used most days. If like me your car can sit for a week or more without being used, especially in winter a drain can be a bit of a nuisance.
Charging a battery every couple of weeks or so in winter is no bad thing particularly if you like all the toys on.
Don't forget most battery chargers will only charge a battery to 80% of it's capacity.

9th Feb 2012 1:32pm

carlos50

Member Since: 03 Feb 2011
Location: North England
Posts: 717

What amps is the LR battery please? Local agent has one in and will probably match eurocarparts on price but the eurocarparts one carries a 5 year guarantee and is 110Ah with 920CCA, don't think the LR one is?

10th Feb 2012 11:17am

stan
Site Moderator

Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35332

ask your local agent... ... - .- -.

Y. O. L. O.
.

10th Feb 2012 12:36pm

carlos50

Member Since: 03 Feb 2011
Location: North England
Posts: 717

Turns out LR have updated their battery to a 950CCA unit so fitted that and all seems well. Haven't drivent it yet so hope it doesn't go bad.

Part No LR030213 for thos interested.

A big thank you to everyone on here, again

Carl

10th Feb 2012 2:05pm

stan
Site Moderator

Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35332

good news carl, lets hope that solves the problem.. ... - .- -.

Y. O. L. O.
.

10th Feb 2012 2:24pm

nafe

Member Since: 01 Dec 2011
Location: Bristol
Posts: 14

2010 Range Rover Vogue SE TDV8 Santorini Black

Hi Carlos
I have had exactly the same problem with mine, I have fitted a new battery and problem has gone away. Shame cheap batteries seam to be fitted to such a premium car
Nafe

10th Feb 2012 8:06pm

SAppie

Member Since: 08 Feb 2010
Location: Berkshire
Posts: 159

Hi Carl,

So I take it then that the alternator is actually ok now that you have a decent battery that does hold charge?

Cheers MY2007 Vogue SE TDV8 - Tonga Green / Sand
MY2005 Discovery 3 - Silver / Biege

10th Feb 2012 8:11pm

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