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Home > Technical > 15v OK through ECU Socket?
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Largered



Member Since: 10 Jul 2016
Location: UK
Posts: 1978




This is what you need. This dual 12v plug wire link has several functions. It charges, it holds 12v for vehicle and can raise the requirements of a low battery whilst starting a vehicle. It gives digital voltage and led display.
I have had this for years.

Post #389544 4th Apr 2020 9:11 pm
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Bobupndown



Member Since: 26 Dec 2014
Location: Upside down behind the TV!
Posts: 2621

United Kingdom 2014 Freelander 2 SD4 GS Auto Orkney Grey

You're making this more complicated than you need to. Just disconnect the battery, put the new one in, reconnect and reset the windows. Simple! Landrover - turning owners into mechanics since 1948

2014 Orkney grey Freelander SD4 GS.
2004 Zambezi silver Discovery 2 Td5 (Gone)
1963 Surf blue Morris Mini Minor Super de Luxe (my little toy)

Post #389558 5th Apr 2020 7:56 am
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Largered



Member Since: 10 Jul 2016
Location: UK
Posts: 1978

I'm with Bob ......... as above.

It isn't that you are the first ever to do this ........

.

Post #389559 5th Apr 2020 8:25 am
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Steve D



Member Since: 19 Jan 2013
Location: Essexshire
Posts: 4091

United Kingdom 

The radio is coded to the ECU. Just reconnect battery, reset the windows, adjust the clock. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

Post #389561 5th Apr 2020 8:32 am
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Largered



Member Since: 10 Jul 2016
Location: UK
Posts: 1978

If you don't feel competent to do the job, find a professional that can. Best way.

Post #389562 5th Apr 2020 8:47 am
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Boxbrownie



Member Since: 17 Mar 2019
Location: Looe
Posts: 2053

United Kingdom 2007 Freelander 2 i6 HSE Auto Stornoway Grey

We changed the battery on our FL2 by just er......changing it, never knew about all this special precautions stuff, as far as I can tell everything has been working fine ever since, didn’t even reset the windows, although I have needed to do this on other vehicles in the past. 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......

Post #389567 5th Apr 2020 9:21 am
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TooBlue



Member Since: 30 Oct 2019
Location: Midlands
Posts: 261

United Kingdom 

Same here.
Remove old battery then fit new one.
Nobody died and car did not explode.


Too much knowledge can be dangerous.

Post #389572 5th Apr 2020 9:50 am
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Vanny



Member Since: 06 Dec 2015
Location: Cheshire
Posts: 436

United Kingdom 2013 Freelander 2 SD4 XS Auto Santorini Black

Automotive rating for ECUs is 9.7v to 16v, and JLR do test to the 16v, so your 15v supply shouldn't damage anything.

The OBD port has a 5amp fuse, if you happen to turn the ignition on or wake the CAN bus (open or close a door/bonnet, press a button on a key) you'll blow the fuse.

The battery supply wires to the OBD port are 0.5mm^2 so can take more than the 5a they are fused to, but not a lot more.

Post #389624 5th Apr 2020 9:06 pm
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Simon J



Member Since: 27 Jul 2019
Location: Norn Iron
Posts: 695

2008 Freelander 2 TD4 XS Auto Rimini Red

Flanagan wrote:
Simon J - did you not lose the radio, or did you have the code (I don't)?.


As others have said, no radio code. You’ve probably spent more time questioning how to do it than it would have taken you to reset the windows Very Happy

Post #389704 7th Apr 2020 9:12 am
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