Member Since: 28 Aug 2013
Location: Gower
Posts: 106
Battery dropping quick when car wakes up
How fast should a D4 battery drain when the car is woken up? I seem to be having a few battery issues. Voltmeter showing 12.4v on battery, then when I open the door and wake the car up it drops down .01v every few seconds, to the point where if I leave the boot open for 10-15 mins the central locking has a hissy fit when I get in then and sets the alarm off, starts fine, reads 14.4v on idle and rises to about 14.6-7 when revved so it’s charging. New battery in nov according to previous owner, I don’t think they’ve coded it in though, could this be an issue? It starts on the button and is used daily, just like to sort it so that if I ever sit with the radio on or a door open one day I’m not met with a click when I go to start it!
Thanks
4th May 2020 11:18 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8156
Every D4 owner will be met with a click if they leave the radio playing and the door open for more than 10 minutes even less if it has been opened more than once, Discos are power hungary.It can when others can't,
It will when others won't,
It goes where others don't.
4th May 2020 3:02 pm
Ceekay
Member Since: 17 May 2009
Location: Bury
Posts: 2057
31 ECU’s according to my IID tool thats more power than an electric car i think D4 HSE Lux MY16 Club Waitomo
D3 HSE MY06 missing her still…
4th May 2020 4:56 pm
JimboTD5
Member Since: 28 Aug 2013
Location: Gower
Posts: 106
Bloody hell! Surely 10 mins with the boot open shouldn’t make that much difference though should it?? If that’s the case I better invest in a jump pack just in case, don’t recall having this issue with my D3, used to open the boot and sit on the tailgate all the time.
4th May 2020 5:29 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8156
Wish I’d got a £pound for every D3/4 that has failed to start after the owner had left the radio on whist giving it a clean It can when others can't,
It will when others won't,
It goes where others don't.
4th May 2020 8:35 pm
Ceekay
Member Since: 17 May 2009
Location: Bury
Posts: 2057
JimboTD5 wrote:
Bloody hell! Surely 10 mins with the boot open shouldn’t make that much difference though should it?? If that’s the case I better invest in a jump pack just in case, don’t recall having this issue with my D3, used to open the boot and sit on the tailgate all the time.
You’ll be fine if you have doors open etc as most of the disco will go back to sleep but as said the radio is a no, no unfortunately D4 HSE Lux MY16 Club Waitomo
D3 HSE MY06 missing her still…
5th May 2020 12:18 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72918
Battery’s goosed.
IMH(NT)O.
5th May 2020 12:27 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8156
Re: Battery dropping quick when car wakes up
JimboTD5 wrote:
...........New battery in nov according to previous owner...................
Thanks
Depends which November but if that is the case it should still be under warranty, talk to the previous owner.It can when others can't,
It will when others won't,
It goes where others don't.
5th May 2020 6:55 pm
JimboTD5
Member Since: 28 Aug 2013
Location: Gower
Posts: 106
It was November just gone and you can see it’s very new, I’ll see if I’ve still got his contact details. Any recommendations on a better battery though if no luck? Or just keep jump leads in there just in case lol
NJSSAm I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
7th May 2020 11:28 am
JimboTD5
Member Since: 28 Aug 2013
Location: Gower
Posts: 106
I had a quick look before work and the bloody clamp is covering the label 😂 I’ll take it off and get back to you with that one
7th May 2020 10:30 pm
Stevepd
Member Since: 06 Mar 2018
Location: Wiltshire
Posts: 392
Mine’s dead now on my RRS1. T&S Norman said it was iffy at the last service just before lock down and recommended this place https://www.tayna.co.uk/visiting from www.rrsport.co.uk
Tanya & Halfords are both good sources for batteries.
NJSSAm I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
8th May 2020 7:42 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72918
Good old Tanya, got to order a new battery for SWMBO’s car from there.
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