Hi i have a problem with my car is an bmw 520i 2003 new model. And I park in front of my house and I lock the car. And afte 1 hour and half the alarma is turn on instantly, when i press the unlock b

Asked by Jul 24, 2014 at 09:41 AM about the 2003 BMW 5 Series 520i

Question type: Maintenance & Repair

2 Answers

68,895

This is sign of weak battery in your key,the bad in your key has a rechargeable battery in it that is not replaceable.May have to buy new key before long.

Best Answer Mark helpful

So i just need to buy a need battery for my key? And the alarm Will be not activate instantly. I know at bmw when when the key is în the contact the battery of the key is charge. And for that you can.t change the battery. Thanks for help

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