Member Since: 04 Apr 2024
Location: Staffordshire
Posts: 11
Getting around battery drain with taligate and doors opening
Hello all,
I'm planning on working out of the back of my Landy and was wondering if there is a way of getting around the battery drain when the tailgate is left open and doors are opened and closed. My understanding is that the battery will drain if it is open and closed but there is a way around (locking doors or something along those lines?)
Any information on this would be ace.
Cheers.2008 Discovery 3 HSE (August 2024 - Present) - 206,000+
2013 Audi A4 (Mar 2022 - August 2024) 120,000+
Last edited by Ollie_Mottram on 9th Nov 2024 10:09 pm. Edited 1 time in total
21st Aug 2024 7:34 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5034
Use a screwdriver to close the latch and the BCM will think the hatch is closed. You may have to use tape to keep the hatch down if being left that way.yµ (idµ - eAµ) ψ=mψ
21st Aug 2024 8:26 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14107
Plus 1 ^^^
wonder if it would also be useful holding the middle button in on the front overhead light for around 5 x seconds to turn the interior lights off, then repeat to turn back on
See many of us have replaced our interior bulbs to LEDs , plse ensure they don’t have metal surrounds on outside of the bulbs as they can earth out blowing the centre overheard light circuit board , plse don’t ask me how I know
Den, hope ur well my friend
21st Aug 2024 9:02 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10672
On the front light.
Hold the middle button for 10 seconds or until it flashes.
That will turn off all lights
Repeat to reactive when winter comes.
21st Aug 2024 9:13 pm
Worms
Member Since: 24 Sep 2023
Location: Highlands
Posts: 383
I routinely leave my tailgate open all day and haven't had any battery issues, so it may be less of a problem than you think!Previously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel
22nd Aug 2024 5:41 am
Nasher
Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2805
Like Worms I've never found it to be an issue.
The car goes to sleep after a while and the lights go off.
However, when I had my D3, I thought I'd only be 10mins with the tailgate open once so put the radio on to listen to whilst working. I ended up being there a lot longer and the car didn't go to sleep which nearly caught me out. It was an HSE but I'm not sure if the spec of the ICE makes a difference.
On my D4 (HSELUX) even with the radio on it all shuts down by itself after a short while.Heaven doesn't want me, and hell is afraid I'll take over.
22nd Aug 2024 7:32 am
pwheeldon
Member Since: 14 Jan 2020
Location: West Yorks
Posts: 1491
The problem us when you're opening and closing doors and or tailgate. I've found if the tailgate left open it'll go to sleep but wake if one of the otger doors is opened, if however you leave one if the other doors open you can open and close any other door or tailgate without waking it.Discovery 4 GS 2009 Auto Stornoway Grey
Discovery 3 s 2005 Auto Bonatti Grey Gone
Discovery 3 SE 2005 Manual Zambezi Silver Gone
Range Rover Sport HSE 2006 Black
Aston Martin DB7 VV
22nd Aug 2024 7:40 am
garrycol
Member Since: 06 Dec 2010
Location: Canberra
Posts: 1130
I thought the issue was the constant opening and closing of doors and tailgate not leaving them open that caused to drain. With a door/tailgate left open the car comes alive and sleeps as per normal but if constantly opened and closed it comes alive with each opening and closing causing the battery drain.
I have not had an issue leaving my tailgate/doors open - radio a different matter.
22nd Aug 2024 7:57 am
Ollie_Mottram
Member Since: 04 Apr 2024
Location: Staffordshire
Posts: 11
Thank you all for your feedback.
I've disabled the interior lights and I'll just be mindful of constantly opening and closing doors. 2008 Discovery 3 HSE (August 2024 - Present) - 206,000+
2013 Audi A4 (Mar 2022 - August 2024) 120,000+
Last edited by Ollie_Mottram on 9th Nov 2024 10:09 pm. Edited 1 time in total
22nd Aug 2024 12:44 pm
Bardley
Member Since: 02 May 2018
Location: Hertfordshire
Posts: 467
It's not just interior lights. ECU'S wake up when the car is unlocked. This is an effective drain.
The system shuts down again after a period of time, but will start over if doors are opened and closed.
If the tailgate is left open and left, and you don't touch anything else, this is absolutely fine all day long.2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
Bikes! KTM, BMW, British, Classics and others.
22nd Aug 2024 1:34 pm
Peter-S
Member Since: 06 Nov 2022
Location: Hillingdon
Posts: 12
I disabled the interior lights. I regularly leave the tailgate and the doors open for most of the day for if the Dogs want to get in and out of the car, never had a problem...yet!!
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