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Jampot1979



Member Since: 23 Jun 2017
Location: Bedfordshire
Posts: 55

United Kingdom 2008 Range Rover Sport TDV8 HST Java Black
Battery voltage before running.

I had the Special programmes off message come up on the display a few times this week. Was told this can be a sign of the battery getting tired.

Car is running fine etc with no other warnings.

I checked the battery voltage today before starting it. It was 12.2v. Is that low?

Post #539199 Wed Oct 25 2017 4:58pm
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 517

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

Mine goes down to about 12 volts overnight. I know cos I’ve programmed my dash cam to turn off if 11.9 volts reached and most days it stays on overnight.

Car still starts fine at this voltage. Robin
2008 Range Rover Sport TDV8
Awaiting rebuild: NGTF
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #539211 Wed Oct 25 2017 6:21pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 5411

United Kingdom 2008 Range Rover Sport TDV8 HSE Stornoway Grey

If it's 12.2V before you unlock it i.e. fully asleep overnight, then it's about 60% charged. Fully charged is about 12.7V. Bear in mind that unlocking the vehicle starts to wake things up so the voltage across the terminals will be slightly lower. Checking via a towing plug allows you to get a proper at-rest figure. Ideally you would leave it 24 hours after any running to allow surface charge to dissipate and thus get a true reading. 2008 TDV8 - it's a labour of love

Post #539372 Thu Oct 26 2017 7:11pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 5411

United Kingdom 2008 Range Rover Sport TDV8 HSE Stornoway Grey

Special programmes unavailable can be a sign of a brake light or brake switch failing. Special programmes use HDC and this is hard wired in to the brakes. Any brake bulb or switch failures will usually cause an HDC failure and thus the error message. 2008 TDV8 - it's a labour of love

Post #539373 Thu Oct 26 2017 7:14pm
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Johnski



Member Since: 02 Sep 2015
Location: North Wales & North Yorkshire
Posts: 1373

Wales 2012 Range Rover Sport SDV6 HSE Lux Sumatra Black

I checked mine this morning, it hasn’t been started this week yet, no interior lights etc come on when opening, and it read 12.72v from + terminal and earth point on car, so that doesn’t seem bad at all by comparison, perhaps just slightly high? Smile John

RRS MY12 SDV6 HSE. Sumatra Black/Ebony & Walnut + Dynamic Pack, + Cold Climate Pack + Memory Pack, Digital TV/DVD, Premium Leather, Cornering Lights, Cooler/Fridge Box, & most Options.


Last edited by Johnski on Thu Oct 26 2017 7:16pm. Edited 1 time in total

Post #539374 Thu Oct 26 2017 7:14pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 5411

United Kingdom 2008 Range Rover Sport TDV8 HSE Stornoway Grey

Fully charged is pretty good, yes! Thumbs Up 2008 TDV8 - it's a labour of love

Post #539375 Thu Oct 26 2017 7:15pm
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 517

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

Jampot has put the kiss of death on my RRS! Neutral

Battery 11.7 volts the other morning. Got it started and went for a half hour run to Tesco, and back. All OK apart from a few messages about auto hand brake not working - which went away. Thumbs Up

This morning 11.4 volts. Got it started and went around the block. Had Adaptive Lights warning, Transmission Fault, (F in display and no manual override or Sport mode), Special Programmes off. Got back, switched it off. Now it wont start and so is on charge. But looks like a new battery is the next step... Robin
2008 Range Rover Sport TDV8
Awaiting rebuild: NGTF
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #541315 Sun Nov 19 2017 9:46am
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 517

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

New battery from Halfords. 5 mins to fit, and all’s well again Thumbs Up Thumbs Up Robin
2008 Range Rover Sport TDV8
Awaiting rebuild: NGTF
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #541321 Sun Nov 19 2017 12:48pm
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Jampot1979



Member Since: 23 Jun 2017
Location: Bedfordshire
Posts: 55

United Kingdom 2008 Range Rover Sport TDV8 HST Java Black

Glad you sorted it.... What battery did you go for?

I recharged my battery, and replaced the brake switch plus bulbs just as a matter of caution. I have been fine since with no problems.

Thumbs Up

Post #541351 Sun Nov 19 2017 3:42pm
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Eaters



Member Since: 11 Apr 2016
Location: East Sussex
Posts: 517

United Kingdom 2008 Range Rover Sport TDV8 HSE Zermatt Silver

I went for the Yuasa 5 Year Guarantee HSB019 Silver 12V Car Battery. There's a bit of a deal on with Black Friday coming up and 5 years guarantee seemed about right to me.

Also noted that it had slightly better "StartUp Power" at 900Amps than the others they had for sale and also the "AH Value" is 100 rather than 95 for their lifetime guarantee one.

I did consider the AGM option as, even though I don't have stop/start, I do tend to do quite a few short journeys but, as I have a trickle charger, decided a might as well use that ever so often to keep the battery healthy.

No issues fitting it in - some reports say that some dimensions can be a problem but not with this battery Thumbs Up Its been on the trickle charger since I fitted it and is now showing 13.2 volts, and still charging. Fingers crossed that all issues are sorted now and I'm set for winter. Thumbs Up Robin
2008 Range Rover Sport TDV8
Awaiting rebuild: NGTF
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

Post #541355 Sun Nov 19 2017 4:09pm
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