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Thread: Battery Flat, manual key unlock on pass door not working 2012 FL2 - HELP please -

  1. 18th September 2025, 08:51 AM #1
    3bar
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    Battery Flat, manual key unlock on pass door not working 2012 FL2 - HELP please -

    Hi all

    Help please

    2012 FL2 - diesel - batt flat, manual key unlock not working (brute force has been tried)

    How on earth and where can i feed 12v in via a trickle charger or how do I open the bonnet ? from outside ? - the starter motor is above the gearbox so i cant reach around from underneath to the starter positive, is the alternator in reach from wheel arch ?
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  2. 18th September 2025, 01:42 PM #2
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    RANDLOVER
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    The easiest would be if it has a towbar with a multi pin plug and a fridge circuit as that is live all the time, otherwise some of the light circuits in the plug might be live if they switch to earth, also you might be able to get light covers off and find a positive if the battery is not totally flat, else you'll need a circuit diagram.
    2005 D3 TDV6 Present
    1999 D2 TD5 Gone
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  3. 18th September 2025, 01:53 PM #3
    3bar
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    Quote Originally Posted by RANDLOVER View Post
    The easiest would be if it has a towbar with a multi pin plug and a fridge circuit as that is live all the time, otherwise some of the light circuits in the plug might be live if they switch to earth, also you might be able to get light covers off and find a positive if the battery is not totally flat, else you'll need a circuit diagram.
    No Towbar so that wont work, hoping alternator positive is reachable from underneath
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  4. 18th September 2025, 06:42 PM #4
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    RANDLOVER
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    If you can't get to the starter or alternator terminals but can get to the cable, you might have to do something horrible like wrap a wire around a screw and screw that into the cable.
    2005 D3 TDV6 Present
    1999 D2 TD5 Gone
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  5. 18th September 2025, 06:46 PM #5
    BradC
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    Quote Originally Posted by RANDLOVER View Post
    If you can't get to the starter or alternator terminals but can get to the cable, you might have to do something horrible like wrap a wire around a screw and screw that into the cable.
    A croc clip on a sewing needle is probably easier to patch.
    MY08 D3 - The Antichrist - "Permagrimace". Turn the key and play the "will it get me home again" lottery.
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