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ds342342342



Member Since: 01 Jul 2025
Location: UK
Posts: 2
United Kingdom 
12v Cigarette Lighter Low Voltage

Hi, I have a 2010 Freelander 2

The most forward 12v cigarette lighter port / socket (the one live on ignition).

Randomly it runs at 7 to 8v for a few mins before going back up to normal voltage. Does not happen every journey.

The other cigarette lighter port which is always live always has the correct voltage.

I have changed the 45 fuse under the bonnet.

Anyone else had this or any suggestions.

Thanks
Post #450270 1st Jul 2025 2:16 pm
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Lightwater



Member Since: 21 Aug 2014
Location: Sydney Northern Beaches
Posts: 5038
Ukraine 2013 Freelander 2 2.0T SE Auto Fuji White

Probably dodgy connection, not directly commenting on voltage, but may help narrow down the issue: https://www.freel2.com/forum/topic33954.html

https://www.freel2.com/forum/topic38610.html

https://www.freel2.com/forum/topic34833.html

My car is 2013 so electrical network is totally different. Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18
Post #450280 2nd Jul 2025 11:14 am
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IanMetro



Member Since: 11 Sep 2017
Location: Somerset BS21
Posts: 3399
United Kingdom 2014 Freelander 2 SD4 Metropolis LE Auto Fuji White
Re: 12v Cigarette Lighter Low Voltage

ds342342342 wrote:
Hi, I have a 2010 Freelander 2

The most forward 12v cigarette lighter port / socket (the one live on ignition).

Randomly it runs at 7 to 8v for a few mins before going back up to normal voltage. Does not happen every journey.

The other cigarette lighter port which is always live always has the correct voltage.


Are these voltage readings with or without a load on respective circuits?

That is, are you using a modern (high resistance) meter, and do you have anything plugged into these sockets when measuring voltage. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 84k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)

Last edited by IanMetro on 2nd Jul 2025 10:47 pm. Edited 1 time in total
Post #450283 2nd Jul 2025 5:24 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5433
United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red
Re: 12v Cigarette Lighter Low Voltage

ds342342342 wrote:
Hi, I have a 2010 Freelander 2

The most forward 12v cigarette lighter port / socket (the one live on ignition).

Randomly it runs at 7 to 8v for a few mins before going back up to normal voltage. Does not happen every journey.

The other cigarette lighter port which is always live always has the correct voltage.

I have changed the 45 fuse under the bonnet.

Anyone else had this or any suggestions.

Thanks


High resistance somewhere - eg corrosion, damaged lighter socket, poor earth , damaged wire.
No easy way to find out - have to test along the circuit.
Has something been spilt into the lighter socket. Jules
Post #450284 2nd Jul 2025 8:19 pm
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ds342342342



Member Since: 01 Jul 2025
Location: UK
Posts: 2
United Kingdom 

Most of the time that socket has a dash cam plugged into it.

But recently to keep an eye on it i have just had a volt meter plugged in.

When it was reading low voltage I then tested the voltage on the 45 fuse and that was also showing the same low voltage, so guess the issue somewhere between fuse 45 and the battery?
Post #450389 6th Jul 2025 6:44 pm
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Dartman the one



Member Since: 04 Apr 2013
Location: Seville, Spain
Posts: 1713
England 

You can only assume that if the fuse is removed and the voltage is low between the battery side of the fuse and the battery, though it is not unknown to have a short internally in the fuse box, or even an open circuit, but in your case a partial earth short my PC is slightly to the right of Genghis
2012 HSE SD4 In Orkney Grey now gone, best car ever.
Post #450391 6th Jul 2025 7:55 pm
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Boxa



Member Since: 01 Apr 2024
Location: Coventry
Posts: 142
United Kingdom 2013 Freelander 2 TD4 Dynamic Auto Santorini Black

probably got high resistance in the socket try taking a reading of the wires connected to it if that's ok just replace the socket
Post #450396 7th Jul 2025 1:24 am
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