Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
we turn s/s off every time.. a pain in the hass..so when the battery went futt didnt bother replacing...not part of MOT at the mo
16th Feb 2022 1:21 am
MRWOO
Member Since: 26 Jun 2010
Location: Cheshire
Posts: 192
Hi all
I have had my 2016 Land Mark for 12 months. To begin with I would always turn the Start/Stop off manually as I didnt like it. After a while the system stopped working and I had no amber light on the dash, joy...! So this has meant no turning off of the system or warning light complaining I turned it off (btw the warning lights is very bright and annoying in the dark)
Wind the clock forward and the Disco would not start last week and complained about low voltage. I fitted a new battery as it was still on the original and we're back up and running.
The problem I have now is the S/S warning light is on all the time and I cant switch it off.
Is this because the auxiliary battery needs charging/replacing? I didn't even know it had one until I read this this post.
I just want to go back to a non functioning S/S with no stupid dazzling warning light on the dash.1964 Series IIA SWB Truck Cab - gone
1981 Series III SWB Hardtop - gone
1982 Series III SWB Hardtop - gone
1997 300Tdi Defender 90 Hardtop - gone
1983 Series III SWB Station Wagon - gone
1979 Series III SWB Station Wagon - gone
2007 90 CSW - gone
2010 USW XS - gone
2006 Disco3 - awesome & gone!
1959 Series II Truck Cab
1984 Series 3 88" CSW
2004 Defender 90 CSW
2016 Disco 4 Landmark
7th Nov 2022 6:57 pm
MRWOO
Member Since: 26 Jun 2010
Location: Cheshire
Posts: 192
For completeness -
I have now fitted an new auxiliary battery.
The S/S light is now off and the S/S is not working (as I wanted)
£50 to turn a warning light off1964 Series IIA SWB Truck Cab - gone
1981 Series III SWB Hardtop - gone
1982 Series III SWB Hardtop - gone
1997 300Tdi Defender 90 Hardtop - gone
1983 Series III SWB Station Wagon - gone
1979 Series III SWB Station Wagon - gone
2007 90 CSW - gone
2010 USW XS - gone
2006 Disco3 - awesome & gone!
1959 Series II Truck Cab
1984 Series 3 88" CSW
2004 Defender 90 CSW
2016 Disco 4 Landmark
16th Nov 2022 12:33 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101
Your new main battery is not putting out the required minimum amps, it either needs charging or is faulty.
Usual symptoms are if the SS light is on and SS is not working it’s the small auxiliary battery that’s low on amps, if the SS is not working and the light is off it’s the main battery that’s low on amps. Of course other things can cause the SS not to work.
The D4 needs an AGM type battery and it must be kept fully charged for the SS to work, I find the SS on a D4 to be an excellent battery condition indicator, the moment mine stops working I put the Ctec on over night. It can when others can't,
It will when others won't,
It goes where others don't.
16th Nov 2022 1:40 pm
MRWOO
Member Since: 26 Jun 2010
Location: Cheshire
Posts: 192
Thanks for that. I've just changed my main battery also so not sure what's going on.1964 Series IIA SWB Truck Cab - gone
1981 Series III SWB Hardtop - gone
1982 Series III SWB Hardtop - gone
1997 300Tdi Defender 90 Hardtop - gone
1983 Series III SWB Station Wagon - gone
1979 Series III SWB Station Wagon - gone
2007 90 CSW - gone
2010 USW XS - gone
2006 Disco3 - awesome & gone!
1959 Series II Truck Cab
1984 Series 3 88" CSW
2004 Defender 90 CSW
2016 Disco 4 Landmark
I'd been puzzling why the S/S would generally only work at the first opportunity after setting off on a journey. After it triggered once, it wouldn't trigger again in the same journey.
Checked the Aux battery & it showed low on amps. replaced it & all seems good again.
Click image to enlarge
Click image to enlarge
Does anyone know how to identify the date marks on the battery? I'm sure the aux battery was last changed in July 2020 but can't see any marks that would concur with this date
Cheers n Gone Nick MY16 D4 Landmark SDV6 (The Ice Maiden)
Uncle Ray's spare wheel protector
MY08 D3 HSE Stornoway (Miss Moneypit) The money tree withered......
Last edited by Skagg on 3rd Jul 2023 8:23 pm. Edited 1 time in total
3rd Jul 2023 6:04 pm
Oxford-boy
Member Since: 07 Sep 2015
Location: Oxford
Posts: 1063
M3DPO wrote:
Your new main battery is not putting out the required minimum amps, it either needs charging or is faulty.
Usual symptoms are if the SS light is on and SS is not working it’s the small auxiliary battery that’s low on amps, if the SS is not working and the light is off it’s the main battery that’s low on amps. Of course other things can cause the SS not to work.
The D4 needs an AGM type battery and it must be kept fully charged for the SS to work, I find the SS on a D4 to be an excellent battery condition indicator, the moment mine stops working I put the Ctec on over night.
+1 on exactly this.
S/S and main battery are heavily linked and S/S issues indicate both need checking.Jim
2014 Discovery 4 XXV SDV6 Causeway Grey
2016 Discovery 4 HSE Lux SDV6 Loire Blue - now gone
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