Immobiliser Light Problem

Discussion in 'General Motoring' started by Pete Edwards, Dec 31, 2007.

  1. Pete Edwards

    Pete Edwards Guest


    I have a 4 year old (hence out of warranty) Meriva. The Immobiliser light
    taken to coming on now and then. When it is on there is no noticeable change
    in operation of the engine and the car can be stopped and started with no
    It seems to be affected by the charge of the battery i.e on a long
    run in day-light it goes out and will stay out until the lights have been on
    a while when it can come on. When it does come on it tends to blink on and
    off for a mile or so before staying on.

    All the above makes me think it is not a fault with the immobiliser but with
    the sensor. Does this sound feasible? any ideas where to look for the
    sensor or should I just take it to a dealer.


    Pete Edwards, Dec 31, 2007
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  2. Pete Edwards

    mikeFNB Guest

    has the battery ever been changed?
    if not id be inclined to give the girl a new one
    4 yrs is a good run for a car battery.

    easy task

    mikeFNB, Dec 31, 2007
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  3. Pete Edwards

    Pete Guest

    Good point

    but there are no other tell tail battery signs, Are there any experts who
    know if the immobiliser sensor is voltage dependant?

    Pete, Jan 2, 2008
  4. Pete Edwards

    me140 Guest

    I am not convinced it is an immo issue at all - the light is also a warning
    light for an emission type engine management fault. Have you had the fault
    codes read?
    me140, Jan 2, 2008
  5. Pete Edwards

    Pete Guest

    No I have not had the codes read, I guess I will have to take it to he
    dealer for that.
    I am not an expert in these things but isn't the light with an engine with
    an lightning flash the ECU warning the light I have on is a car with an
    arrow coming out of its roof.

    Anyway I will pop the car to the dealer this weekend thanks

    Pete, Jan 3, 2008
  6. Pete Edwards

    me140 Guest

    One is an engine management warning light and one is an eobd emission
    related fault (cat threatening ) warning light.
    Daft really, having 2 but that is the law in Vauxhall land.
    me140, Jan 3, 2008
  7. Pete Edwards

    Tom Guest

    Have the codes read by all means but do not take them to be gospel. They can
    show up non faults and not show up faults.
    Tom, Jan 4, 2008
  8. Pete Edwards

    airsmoothed Guest

    Agreed, having been through this recently with my wife's Zafira having
    emmission problems, the engine shaped warning light is the emissions
    warning, the engine management light is an outline of a car with a
    spanner through it.
    airsmoothed, Jan 4, 2008
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