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Home > Technical > Consequences of battery disconnection |
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LR2hselux Member Since: 23 Nov 2017 Location: Norfolk Posts: 48 |
Did you wait for vehicle to shutdown completely before disconnecting battery? All the modules need to have shutdown and the BCM needs to have gone to sleep. Hazard light switch illumination shows when it’s gone to sleep, when the backlight illumination has gone out (15 minutes approx but can be longer) it’s safe to disconnect the battery. Maybe try a reset using this procedure, ignition off, key removed, allow to shutdown properly, disconnect battery for twenty minutes and then reconnect. |
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21st Mar 2020 7:40 am |
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itsaguything Member Since: 25 Apr 2019 Location: Ottawa Posts: 90 |
Absolutely correct. ensure all doors are closed, lights are off, etc., etc. prior to reconnection.
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24th Mar 2020 9:04 am |
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Boxbrownie Member Since: 17 Mar 2019 Location: Looe Posts: 2053 |
Yesterday (as we won’t be using the FL2 for a few months it appears) I connected a solar 2.4watt charger to the battery, didn’t bother disconnecting as it seems to be all fine as it is.
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24th Mar 2020 11:57 am |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 5021 |
Started first time - glad I changed the battery last year. Jules |
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24th Mar 2020 10:47 pm |
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flybd5 Member Since: 14 Jan 2020 Location: Massachusetts Posts: 51 |
Found it. Loose connector at the top of the ECM. Reseated it and all is well. 2008 US LR2 SE, 6-cyl gas |
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29th Mar 2020 11:29 pm |
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Joedenise Member Since: 17 Oct 2018 Location: Warden Kent Posts: 80 |
I just plugged into the live cigar lighter put panel on dash facing sun |
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30th Mar 2020 8:38 am |
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dondiddy Member Since: 16 Apr 2017 Location: Hamilton Posts: 753 |
Always good when a thread has a good outcome and the OP does a follow up post. With lots of threads you never get to find out what was causing the issue! |
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30th Mar 2020 9:14 am |
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4354 |
Isn't the initial poor idling a normal consequence of the ECU remapping the engine as a result of the power down? This used to be more common for the first few minutes especially on petrol engines but perhaps some newer ECUs have an internal standby battery 3 x FL1 2 manual + 1 auto 5 x FL2 4 manual + 1 auto Now Discovery Sport P250 MHEV SE |
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30th Mar 2020 10:07 am |
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4354 |
Just a thought but if we know our vehicles will be off the road for a few months it might be worth doing a SORN and getting the road tax back (I taxed mine for the year about two weeks ago!), same goes if your insurance is due any time soon. 3 x FL1 2 manual + 1 auto
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30th Mar 2020 10:12 am |
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ggb Member Since: 15 Sep 2018 Location: County Antrim Posts: 245 |
I taxed mine two weeks ago as well. I did consider the SORN option but then again I may need it in an emergency. As for insurance, as long as you have off road parking and are confident you definitely won’t need it you will save.
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30th Mar 2020 10:32 am |
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Largered Member Since: 10 Jul 2016 Location: UK Posts: 1978 |
"I just plugged into the live cigar lighter put panel on dash facing sun"
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30th Mar 2020 11:04 am |
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sid Member Since: 16 Jul 2015 Location: devon Posts: 493 |
where is the ecm?and how do you think the connector came loose? |
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31st Mar 2020 8:20 pm |
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flybd5 Member Since: 14 Jan 2020 Location: Massachusetts Posts: 51 |
It is the large box with several connectors behind the glove box. Maybe I got the initials wrong, could be ECU?
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31st Mar 2020 8:26 pm |
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Boxbrownie Member Since: 17 Mar 2019 Location: Looe Posts: 2053 |
That’s interesting you’ve mounted the panel dead level, years ago I was involved with a solar panel test on a very early development EV we found that roof panels (or any other horizontally mounted) gathered a lot more dirt than one with a slight (even 3-4 degrees) mounted, after much investigation it was found any rain or dew attracted dust which when the water dried stuck, when there was even a slight angle the water flowed off to a great extent (the panel were all polished with a hydrophobic chemical, now called Rain-X)......made a huge difference to power output after only a few weeks in this country, well Germany also! Regards David Lovely i6 has now gone, but not me...... Please let me know if anything in my post offends you, as I may wish to offend you again...... |
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1st Apr 2020 10:05 am |
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