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Thread: Vectra c fob re-syncing correct procedure please

  1. #1
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    Vehicle : Vectra c

    Trim : Ls

    Engine : 1.8

    Year : 52

    Default Vectra c fob re-syncing correct procedure please

    Hi all

    ive fixed reverse lights. Bulb and pad warnings next Is fob.

    Ive read about 3 different re-syncing procedures and need a definite explanation before I pay out.

    Vectra 1.8 ls 52 plate c newer shape with 3 button remote ie including boot.

    The fob was a bit worn so I had a look and the battery is ok but found a button unsolder end and the battery terminal dry joint so I've fixed these faults
    i get 3v at buttons and when pressed they drop to 1.5v for a few seconds. I don't see an led and its back together now but does nothing.
    Does anyone know the exact procedure for this car.?
    or a test to see if the fob is transmitting. Would a radio receiver set to 433mhz hear it ?
    cheers
    barks

  2. #2
    Regular Member MrDerv's Avatar
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    To re-sync a fob to the rentral locking, pop the key in the ignition and turn it to the second position (ignition on). While on, press the lock and unlock buttins around 3-4 times each, then turn off and key out. press the lock button and it should start working again.

    This will only work if the key is programmed to the car previously. Change of battery or repairing the buttons should get away with the above procedure

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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Put key in ignition and turn to position 2.
    Press lock/unlock buttons.
    If resync is sucessful, the C/L should operate.


    There is also another procedure mentioned in newer handbooks too:-
    Unlock door with key in lock. Inserting the key into the lock synchronises the radio remote control. Now whether the latter refers to the door lock or ignition lock, I have no idea.

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    Vehicle : Vectra c

    Trim : Ls

    Engine : 1.8

    Year : 52

    Default

    Thanks both.
    Ill give it another go.
    Does it not matter if door is open or closed ?

    cheers
    barks

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    Regular Member MrDerv's Avatar
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    No idea, but lets say Closed

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    I've alwasy done it with the door open. No idea if makes any difference or not.

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    Vehicle : Vectra c

    Trim : Ls

    Engine : 1.8

    Year : 52

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    Quote Originally Posted by Big Dave View Post
    I've alwasy done it with the door open. No idea if makes any difference or not.
    Cheers all
    ive tried it all ways and nothing.
    I don't think the fob is transmitting but I have no way of testing

  8. #8
    Regular Member nikroc's Avatar
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    Vehicle : 2t

    Trim : standard

    Engine : z20net

    Year : 08

    Mileage : 32000

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    battery?...does the red light in between the buttons light up when you press the buttons?

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    Year : 52

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    Quote Originally Posted by nikroc View Post
    battery?...does the red light in between the buttons light up when you press the buttons?
    Has anyone got a wiring diagram for a 3 button remote fob?

    many thanks

  10. #10
    Regular Member nikroc's Avatar
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    Default

    its a circuit board setup,battery change/check light is a good,simple start.

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