Member Since: 19 Nov 2018
Location: Fife
Posts: 167
The small battery in the pic is the auxiliary battery, don't think it has much to do with the stop/start or engine cranking.
I've had my D4 for a little under two weeks, the stop/start didn't work when I bought the car, didn't notice on the test drive tbh. My local indi LR specialist replaced the main battery and back charged the supplying dealer as they were over 250 miles away its worked since then.battery cost £200 fitted 3 year warranty.
Ive reconditioned the old battery and its been on charge for nearly 50 hours and its still not reached the trickle charge state ........
13th Dec 2018 5:28 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1521
My understanding is that the second small battery keeps electrical systems going when stop/ start kicks in. It does not do any cranking of any sort. If the battery is dead/ low voltage and recharging doesn't work, then replacing it is required for stop/ start to work. If main bat is reading 12.7v then it doesn't sound like that has a problem.Gary
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Discovery 4 HSE 2016MY
13th Dec 2018 5:40 pm
kevsco
Member Since: 11 Dec 2010
Location: Bedfordshire
Posts: 23
My stop start was not working and the dealer replaced the main battery under the extended warranty. It was then OK for awhile but stopped again some 2 months ago. I found the small battery was not holding a charge ( reading 10 volts). I replaced it and now it works perfectly. The battery cost just under £50 delivered from Tanya batteries. I believe both batteries need to be in good order for the system to operate.
13th Dec 2018 7:33 pm
BBDisco3
Member Since: 23 Nov 2008
Location: Cheshire
Posts: 3640
Heyloft wrote:
Interestingly, or very annoyingly
MY main battery is testing 96% and 12.7V
The start stop battery is dead. Battery charger can't even detect it and it did on Sunday.
My start/stop battery failed only this week, giving an orange warning light an message of "Start Stop Unavailable" The battery was showing less than 10 volts and the Ctek wouldn't recognise the battery.
Collected the Exide EK151 battery from their Warrington branch (17 in stock) for £48 with 3 year guarantee. The original battery bares the name of both Landrover & Exide.
Fitting was simple, but I removed the red +ve lead at both ends for ease of access and to avoid it dropping down and shorting out as it remains live, being fed from the main battery. The "bit in the middle" is a fuse. You need a long extension bar for your socket as the battery has a single retaining bolt holding down the metal strap.
The start/stop function also started to function again.
13th Dec 2018 9:57 pm
kirkyworld
Member Since: 01 Mar 2016
Location: Northampton
Posts: 566
I had my stop start battery swapped under warranty. The main starter battery failed at 2.5 years old and was changed by LR assist then a few weeks later the stop start function became unavailable and it had the other battery done too under warranty.
14th Dec 2018 9:06 am
Ceekay
Member Since: 17 May 2009
Location: Bury
Posts: 2057
Looks like my stop/start had been switched off in the CCF as it wasn't working but there were no warnings on the dash but have just enabled another item in my CCF and the warning light is now showing on the dash.
Did get this back though from the IID tool so not sure if its just the battery that's knackered as its referring to the dual battery actuator being stuck or is this what happens when the battery fails?
D4 HSE Lux MY16 Club Waitomo
D3 HSE MY06 missing her still…
14th Dec 2018 6:28 pm
33Lurcher
Member Since: 29 Jun 2017
Location: Glossop
Posts: 228
My 2016 was in yesterday/today and just had phone call to confirm battery issues and both replaced under warranty .
20th Dec 2018 6:21 pm
ratrunner
Member Since: 20 Nov 2015
Location: cotswolds
Posts: 194
Does stop/start not working impact on the new MoT? I hope not.
NJSS
My start stop does not work and it passed its first mot at main dealers in November.Start stop never worked properly since I bought the car in June 2015 with 3,000 miles on the clock.Dont like it anyway so not missed,as for saving the planet I leave that to others
22nd Dec 2018 5:15 am
Dave T
Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6902
Gary_P wrote:
My understanding is that the second small battery keeps electrical systems going when stop/ start kicks in. It does not do any cranking of any sort. If the battery is dead/ low voltage and recharging doesn't work, then replacing it is required for stop/ start to work. If main bat is reading 12.7v then it doesn't sound like that has a problem.
Correct I believeJoined the BMWX5 45e group
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22nd Dec 2018 7:57 am
33Lurcher
Member Since: 29 Jun 2017
Location: Glossop
Posts: 228
Since both batteries were replaced this week the stop/start is working as intended , wasn't that bothered over stop start but pleased have new batteries for winter .
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