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Dead baterie

(1990 BMW 535i)
in San Mateo, CA on February 20, 2011
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?
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Popular Answer
on February 20, 2011
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.

Zee
of Motorsport Division on April 29, 2013
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.
on March 26, 2011
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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