Question about 2000 Volvo S80

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1999 Volvo S80 2.9 auto I hadn't used the car for 4 weeks & the battery had gone flat. Once charged I notice the heater/ AC didn't work & the console lights don't come on, also the drive selector lights (next to the gear stick)don't work. I read elsewhere that the ECM needs a reset & this is done by locking & unlocking the car using the remote key - this didn't work. Any suggestions would be greatly appreciated, thanx

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  • volvomom Sep 01, 2008

    Changed the battery on a 2000 S40. Now the key won't come out of the ignition

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Try disconnecting both battery terminals and touching them together for about 30 seconds. This will drain capacitors and any stored power in the modules(or computers). When a battery goes dead and modules are deprived of proper voltage they make funny things happen... especially on Volvos. Good Luck

Posted on Aug 12, 2009

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I believe that you have to drive the car for a few miles so the computer completes a drive cycle then all the components should go back to normal again. Else you have to look into further if the ECM or the ABS module is bad.

Posted on Aug 11, 2009

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