Question about 1997 Volvo 850

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I have 850 volvo and keep getting imobilisor and alarm when i go to start it new battery it doesnt reset

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Hi

Did you switch the new battery over directly after you removed the old one? If so try disconnecting the car battery for a few hours, then when you put it back on put the live "red" on first then the "negative" black second. this often resets the immobiliser.

Hope that helps.

p.s in some cases with other makes you have to leave the battery off over night as the immobiliser if factory fitted has a battery backup built in. this needs to run dead.

Regards
Dan

p.s.s also try lock and unlock with the key not the remote.

Posted on Dec 29, 2010

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