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1990 BMW 535i Question: dead baterie



Visitor, San Mateo, CA, February 20, 2011, 19:29

batterie completly dead can not open doors with the key called aaa cant open doors with there tools ether please help do i have to break a window to open the car to change the baterie?

3 Answers
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  • Answer #1

    February 20, 2011, 21:29

    If you can get the car on a lift or get under the car somehow, the battery can be back fed from the starter circuit, it's not easy, but doable. Better if a mechanic do it.


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  • Answer #2

    Visitor, March 26, 2011, 19:31

    you have to turn the key more to the left.. their is a manual switch that engages.... problem solved if your battery is dead

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  • Answer #3

    Motorsport Division (17 Answers) , San Mateo, CA - (650) 263-8069
    msportdiv April 29, 2013, 18:10

    Even with a dead battery you should be able to use your actual key to insert and unlock the door or trunk to get to the battery.

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