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ssandps



Member Since: 22 Nov 2016
Location: Staines
Posts: 23

United Kingdom 2006 Range Rover Sport Supercharged Sumatra Black
Battery going flat

The battery on our 4.2 rrs keeps going flat when the car has been left for more than a day . It had a new battery in November and I have also just replaced the bonnet catch as the alarm kept going off . It had a 100 mile drive on Saturday was then not used Sunday or Monday and was flat this morning Tuesday. Has anyone any ideas what might be causing this . Thanks
P.s it's an 06 plate

Post #517008 Tue Feb 07 2017 4:56pm
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Paddi



Member Since: 06 Jul 2012
Location: Hertfordshire
Posts: 1447

United Kingdom 2008 Range Rover Sport TDV8 HSE Java Black

What sort of use does your car get in terms of daily use? Is it mostly short runs?

If yes to above then try giving the battery a full charge using a decent smart charger and see what happens.

There may be something causing battery drain and there are many possible sources but a common one is the upper tailgate switch. It is easily and cheaply replaceable: just pop it out and slot in the new one.

If you try the above suggestions and the problem persists then you need to check the battery drain. Or get a good independent specialist to sort it out. 2008 MY Java Black TDV8 HSE

Post #517043 Tue Feb 07 2017 9:32pm
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ssandps



Member Since: 22 Nov 2016
Location: Staines
Posts: 23

United Kingdom 2006 Range Rover Sport Supercharged Sumatra Black

Hi thanks , yes it does only short trips during the week so i will get a smart charger . Also when we got the car the boot light was disconnected , I reconnected it and replaced the bulb . I have now disconnected it again , will also try the switch as you said .
Thanks again , I will let you know how it is .

Post #517047 Tue Feb 07 2017 10:03pm
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ssandps



Member Since: 22 Nov 2016
Location: Staines
Posts: 23

United Kingdom 2006 Range Rover Sport Supercharged Sumatra Black

Is the upper tailgate switch the release switch ? Also how is it accessed?
Thanks

Post #517049 Tue Feb 07 2017 10:17pm
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Paddi



Member Since: 06 Jul 2012
Location: Hertfordshire
Posts: 1447

United Kingdom 2008 Range Rover Sport TDV8 HSE Java Black

Yes, it is the one with the rubber cover. Ideally, open the upper tailgate, remove the plastic trim and push out the switch from the inside. Alternatively CAREFULLY lever out the switch from the outside but this risks scratching the surrounding bodywork. It will probably be corroded and a bit reluctant to come out cleanly. If you search the site for 'upper tailgate switch you'll find descriptions and pictures of how to do it. 2008 MY Java Black TDV8 HSE

Post #517054 Tue Feb 07 2017 11:02pm
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ssandps



Member Since: 22 Nov 2016
Location: Staines
Posts: 23

United Kingdom 2006 Range Rover Sport Supercharged Sumatra Black

Thanks for the advise I will let you know how I get on .

Post #517150 Wed Feb 08 2017 7:32pm
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Brutus



Member Since: 10 Nov 2015
Location: Cambridgeshire
Posts: 64

England 2006 Range Rover Sport TDV6 Autobiography Java Black

ssandps,

Did you sort this problem?

Post #524051 Thu Apr 20 2017 8:14am
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ssandps



Member Since: 22 Nov 2016
Location: Staines
Posts: 23

United Kingdom 2006 Range Rover Sport Supercharged Sumatra Black

I did change the upper tailgate switch which was corroded , however if left for more than a couple of days it is still going flat . So I have purchased a smart charger and tend to charge it on a sunday when it mainly does not get used . So I still don't know what else it could be ?
Any other ideas ....
Thanks

Post #524100 Thu Apr 20 2017 6:34pm
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Alfa Rover



Member Since: 14 Dec 2016
Location: Vancouver
Posts: 10

Canada 

Hi, had the same problem. turned out to be my starter motor. a good shop will be able to confirm the current draw using an amp clamp and pin point the problem. i did it myself because i love a challenge.
Cheers Neil.

Post #540051 Fri Nov 03 2017 8:11am
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Tim in Scotland



Member Since: 30 May 2005
Location: Driving along in my automobile
Posts: 15638

2013 Range Rover Sport SDV6 HSE Stornoway Grey

Also when you park it do you lower it to access height? This is really important if you you don’t use the car a lot as it will force all the electronics to go into sleep mode, if you leave it in normal height then the electronics will only hibernate and will be looking for your key fob all the time.
Also you could pop into Maplins and invest in one of their solar panel trickle chargers which on your car you should be able to plug into any of the cigarette lighter sockets - cost about £15 but make sure you get one with blocking diodes that prevent battery charge flowing back to the panel at night.......... I used to keep both my 2.7TDv6 and 3.6TDv8 connected up to these when I was way for 5-6 months and never has a problem until I bought later cars with battery management systems that wouldn’t allow the cigarette lighter to remain live when the ignition is off, but I now have a work around for that too in my 2015MY RRS. 2015MY Corris Grey SDv6 HSE Dynamic, preceeded by a 2.7SE RRS, a 3.6TDv8 RRS, several FFRR's and 2 Evoques.
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW.... my fun car to enjoy bashing and denting 20 years old and still giving loads of fun

Post #540067 Fri Nov 03 2017 12:46pm
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