Member Since: 22 Mar 2020
Location: norwich
Posts: 235
flat battery
i have been leaving the drivers window open by about 1/4 inch to allow a cable through to power a dehumidifier . can leaving the window open like this cause battery drain overnight . its a 2005 d3 tdv6 .2005 discovery 3 tdv6
1971 200 tdi 2 door range rover
300tdi defender 90 in bits needs lots of work
8th Dec 2020 9:46 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4500
Leaving the window open wont flatten the battery. I'd guess the battery was weak, and the cold has finished it.Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
8th Dec 2020 9:50 pm
paul123
Member Since: 22 Mar 2020
Location: norwich
Posts: 235
thanks i was sort of thinking that but not sure if there was some electrical voodoo involved .2005 discovery 3 tdv6
1971 200 tdi 2 door range rover
300tdi defender 90 in bits needs lots of work
8th Dec 2020 9:56 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1807
Using a dehumidifier usually indicates water inside the car. If this is so then water maybe in the sills so there are many wires to short in there so I would check that first. Give the battery a good charge up out of the vehicle. After charging, leave for 24 hrs and then measure voltage this will give an indication of how good the battery is.
15th Dec 2020 9:28 am
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2081
I have just had to dry out the interior of my 2005 MY HSE due to leak in the A post finisher fixings. I ran the dehumidifier with the Power cable running via the base of the rear door shut line over the seals . So no need to leave the window open . But even so an open window should not put any extra drain on the battery. Was the car left locked?
15th Dec 2020 9:53 am
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
Leaving the window open will allow air to blow in and set off the interior protection on the alarm.
I would also think the dehumidifier will do the same.
15th Dec 2020 6:49 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14030
Plus 1 ^^^^ ,ref resolving ingress of water , battery condition etc
Plus Wonder if it would help by double pressing the alarm button to turn off the interior alarm sensors
Last edited by gstuart on 15th Dec 2020 7:13 pm. Edited 1 time in total
15th Dec 2020 7:11 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
It cant hurt or leave the car unlocked if safe to do so.
15th Dec 2020 7:12 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14030
Hi aja4x4
Daft question if I may please, trying to remember if I read it somewhere if the landy is left unlocked and no doors are opened it automatically locks itself
Plus wonder if the landy still shuts itself down the same as if it was locked
Know u guys will know more , was just curious
Many thks
15th Dec 2020 7:16 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
If you unlock it and dont open a door it will relock after a short time.
and yes it still goes to sleep even if its not locked, i hardly ever lock mine if i leave it at work as its left in a secure yard with 24hr security even after 2 weeks it still starts fine
15th Dec 2020 7:27 pm
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2081
My D3 will lock itself if unlocked with fob and then door etc not opened, but if opened and just left, it doesn't lock. Its just to protect if you accidentally press the fob , without knowing, and it unlocks but with no further action it will relock after so many seconds.
15th Dec 2020 7:28 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14030
aja4x4 wrote:
If you unlock it and dont open a door it will relock after a short time.
and yes it still goes to sleep even if its not locked, i hardly ever lock mine if i leave it at work as its left in a secure yard with 24hr security even after 2 weeks it still starts fine
Bless u for the reply , very grateful as always
15th Dec 2020 8:09 pm
paul123
Member Since: 22 Mar 2020
Location: norwich
Posts: 235
thanks for all your replies . so a quick update the dehumidifier was running to dry the carpet after water getting in through the trim clips on the a pillar . i think i have now cured the water problem the interior id drying ok .the reason i asked about the window being open a bit when the battery went flat was could this keep some thing from shutting down and draining the battery ? . it now seems the battery is on its way out the car only gets used 2 or 3 times a week for short trips . i am also fitting a cteck plug to the car for easy charging if needed ( its my wifes car ) .2005 discovery 3 tdv6
1971 200 tdi 2 door range rover
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