Member Since: 05 Dec 2007
Location: Liverpool
Posts: 1038
now that's got me confused!!!!!!
So can I remove the battery for a couple of days or will everything go nuts????
apologies if I'm sounding thick 2000 D2 TD5 - big red tractor no longer with us
2006 D3 - no longer with us and sadly missed
2010 D4 alas no more, but a lovely colour (Nara)
2016 D4 departed
2022 DiscoSport 45mpg, but its not a D4
13th Jun 2020 6:38 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73086
TBS, I’ve disconnected for a few long stretches, recharged the battery & she (D3 and D4) was fine. Only thing to check is that the emergency door lock in the passenger door works fine otherwise you’re locked out.
13th Jun 2020 8:22 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1670
If you do change the battery yourself, you need an IID tool to reset the Battery Management System.Gary
-------------------------------------------
Discovery 4 HSE 2016MY
13th Jun 2020 8:30 pm
frenchy
Member Since: 05 Dec 2007
Location: Liverpool
Posts: 1038
DSL - thanks …...I'll check the emergency key / door lock tomorrow - top tip
Gary - I don't have (or have access to) an IID - I had heard that the BMS just "works itself out"?????
What are the implications if it doesn't?2000 D2 TD5 - big red tractor no longer with us
2006 D3 - no longer with us and sadly missed
2010 D4 alas no more, but a lovely colour (Nara)
2016 D4 departed
2022 DiscoSport 45mpg, but its not a D4
Battery +ve to body/engine? Have you checked the earth straps ?.
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
14th Jun 2020 7:11 am
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1670
Ref BMS reset.
I’d also like to know what happens if you don’t do it. I don’t have an IID either and wondered whether I too can swap my own battery when the time comes (battery now 5 years old).
CheersGary
-------------------------------------------
Discovery 4 HSE 2016MY
14th Jun 2020 8:48 am
frenchy
Member Since: 05 Dec 2007
Location: Liverpool
Posts: 1038
Hardware wrote:
Where are you measuring battery voltage?
Battery +ve to body/engine? Have you checked the earth straps ?
To be honest, measuring directly across the battery terminals.
I'll check tomorrow across the battery, then compare battery +ve to engine.
Assuming all is 'normal' I'll probably then take out the battery and stick it on a 'repair' charge from the Noco - it advises to remove battery to do this to protect 'sensitive electronics'
By the way, the Noco instruction manual advises to only run repair mode on Lead-acid batteries - from what I've read (5minutes on Google ) AGM batteries are still classed as lead-acid......SOMEBODY PLEASE STOP ME IF I'M WRONG!!!!!!!!!!!!.
I'll take my chances on the BMS when the battery reconnected 2000 D2 TD5 - big red tractor no longer with us
2006 D3 - no longer with us and sadly missed
2010 D4 alas no more, but a lovely colour (Nara)
2016 D4 departed
2022 DiscoSport 45mpg, but its not a D4
14th Jun 2020 10:40 pm
M3bobby
Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857
My CTEK charger has a warning it’s for Lead Acid only and it has an AGM setting so I wondered the same thing. From reading the WWW, the AGM is the same but the acid is absorbed into the glass material instead of being in pockets.012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete)
15th Jun 2020 7:08 am
M3bobby
Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857
Gary_P wrote:
Ref BMS reset.
I’d also like to know what happens if you don’t do it. I don’t have an IID either and wondered whether I too can swap my own battery when the time comes (battery now 5 years old).
Cheers
If you don’t reset the BMS it won’t effect the car. It only shuts things down such as Audio in an effort to prevent the battery draining to point where it can’t start the car. I believe the BMS learns how the battery is performing with the idea of it adjusting for the battery becoming older, however it works both ways so should learn that the battery performance is improving (improving as it doesn’t know it’s a new battery).
I should also add that the BMS can also help optimise how the battery is re-charged by the alternator.012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete)
15th Jun 2020 7:14 am
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1670
Thanks
Sounds like it's worth doing.Gary
-------------------------------------------
Discovery 4 HSE 2016MY
15th Jun 2020 7:36 pm
T2BTK
Member Since: 27 Aug 2014
Location: Emigrated (again)
Posts: 182
frenchy wrote:
By the way, the Noco instruction manual advises to only run repair mode on Lead-acid batteries - from what I've read (5minutes on Google ) AGM batteries are still classed as lead-acid......SOMEBODY PLEASE STOP ME IF I'M WRONG!!!!!!!!!!!!.
Did you ever try the repair mode - I'm having similar battery issues
14th Aug 2020 4:19 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23830
Both the batteries on my 2016 D4 were replaced close to being 3yrs old.2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) PD1881 rims-GONE
2017 FFRR SDV8 Autobiography (now semi-retired)
14th Aug 2020 4:22 pm
D4mation
Member Since: 29 Jul 2011
Location: Ruralshire
Posts: 593
FWIW I believe you should NOT run a recondition mode on AGM batteries. It's designed to fizz the electrolyte in wet batteries by applying higher than normal voltages. There isn't as much electrolyte in an AGM battery to fizz.MY12 D4 HSE Ipanema Sand
17th Aug 2020 12:13 pm
Dexter
Member Since: 21 Sep 2007
Location: Aberdeenshire
Posts: 1394
New AGM main battery fitted today at Halfrauds, Kittybrewster, Aberdeen. BMS reset, no issues, pleasant chap and £160 all in with my new trade card 🤗
Stop start working again tho
21st Aug 2020 6:12 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1670
Hi D4mation
If you are referring to CTEK recond mode, I asked the question about whether this can be/should be used to CTEK customer support.
They informed me it does nothing for an AGM battery but also doesn't harm it.
Cheers
GaryGary
-------------------------------------------
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
... All LED interiors lights, DRLs, Spare Wheel protector.
Stop start working again tho 
