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Weird one at Halfords yesterday

s3tby Mar 31, 2017

  1. s3tby

    s3tby Registered User

    Couple' warm days recently so finally swapped in a new ac compressor. Booked into Halfords Autocentre for full ac service (£49) which includes the regass.

    Went through the vac & leak test. Charged. Leak tested again.

    I'm sat in reception and hear a car cranking, trying to start. Thought it may have been my 1.8T BEX though couldn't be sure. This went on for about 20 minutes on and off. Guy finally comes through and says:

    "Have you had any problems starting your car? Any trick to it"?

    In 11 years of ownership my A4 has always started first time, every time. I couldn't understand at all what they might have done during the air con procedure to compromise ignition?!

    Comes back after another 20 minutes and says:

    "If you zap the car open with the fob it doesn't start in the ignition. Immobiliser is kicking in. If you unlock the door with the key (manually) then boom it starts straight up".

    So off I drove (with icey ac). I got home. Scanned it. No codes. Key was working fine for me (remote unlocking). I've tried to replicate and no luck. The exact same key on remote, ignition, all working great.

    The only thing I can think of is that the car was locked but they were leaning in through the open window (car came out with drivers window fully down) trying to start it when it was actually locked (and armed) maybe? But then the interior alarm should have triggered?! Surely if you remote unlock the car the immobiliser registers that as 'authorisation' and should start in ignition?

    Anyway, I'm all good now(!) but just wondering if anyone has any experience of such a (key fob?) issue. Maybe intermittent if the key fob battery is dieing. For me it meant sitting in Halfords for an hour longer than I might have liked!
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  3. DieselJake

    DieselJake Well-Known Member VCDS Map User

    I see the problem here; you took it to Halfords! haha.
  4. s3tby

    s3tby Registered User

    :grinning: I was waiting for that! Well, God knows what they did to fuddle just getting into a car and starting it. Might have thought that was covered in the Halfords training course at least.
  5. QuattroCalum

    QuattroCalum Registered User

    The alarm should disarm when the key is in the ignition and switched on .
  6. Pops848

    Pops848 Registered User

    As Calum says, the key disarms the immob once it is in the ignition.

    My key's battery died and whilst I was being lazy and picking up a new battery I had to unlock the car with the key in the door, if I didn't put key in the ignition the alarm would've sounded within about 30 seconds or so, then put key in and alarm would go off.

    Very odd one and guess someone had done something silly but at least it's all sorted now!
  7. @udi A3

    @udi A3 Well-Known Member VCDS Map User

    If this was an immobiliser fault the car would have starated then cut out. It should stat regardless of remote or manual locking.

    They may have disturbed some wiring when re gassing. Have a wiggle of wires under the bonnet.

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