Quote:
Originally Posted by angie4m
Position 2. I don't usually do that as I remember one of my Dad's mates leaving the keys in position 2 in a BMW while he washed his car and it burnt the transponder out resulting in having to get a new key.
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Hi Angie,
Re your comment about BMW immobiliser I'm a former BMW technician and your correct if you leave the ignition on and the battery completly discharges it wipes the transponder chip in the key.
Also with BMW and most modern cars with airbags, the systems are constantly monitoring battery voltage and if the voltage nears a critical level, whilst there is still some power it will take action and shut down the systems and activate the warning light.
Once the power drops this can cause a plethora (oh who's swallowed a dictionary) of weird electrical faults.
If it were my car I wouldn't worry too much and see how it goes as I suspect the system just got a little worried about how quickly the battery was draining with Ignition and h/lights being on for I think you said half an hour particually if you have
HID's.
Cheers
Chris............