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Question: '02 Volvo S40 air bag light stays on after replacing car battery

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Visitor, 1.9L 4 Cylinder Turbo, Aliso Viejo, CA, January 09, 2011, 18:59

After replacing the car battery, the air bag light on the dash is on. I tried using my OBDII code reader to erase it without success. I've checked the fuses in the passenger compartment and under the hood. All look OK. I also checked to see that the wiring under the driver's seat were all intact. Is their anything else I can check before taking it to the shop?

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  • Answer #1

    ZeeTech January 09, 2011, 19:04
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     Master

    Try to disconnect both battery cables and bridge them together for about 10-15 minutes, than reconnect them again, first connect the positive than the negative.

    Zee

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    Visitor, January 09, 2011, 19:24

    By "bridge together" do you mean to have both cables making contact with each other and continue to stay linked together for 10-15 minutes?

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    ZeeTech, January 09, 2011, 19:36
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     Master

    Yes, it's correct. If the two cables reach each other I usually use a wise-grip to hold them together, you can also use an uninsulated electrical cable or metal wire.

    Zee

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    Visitor, January 09, 2011, 20:18

    Tried it twice but no luck. The light remains on.

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    ZeeTech, January 10, 2011, 06:32
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     Master

    Unfortunately it doesn't work all the times.
    The car has to see a VIDA or DICE diagnostic computer to read / clear the SRS code(s).
    You should try a Volvo specialty shop or the dealership in your area.
    Do you remember if you left the ignition switch in the ON position while replaced the battery?
    If the key is off when you disconnect the battery it should not set SRS codes.

    Zee

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    Visitor, January 10, 2011, 07:06

    The keys were in my pocket. I guess there's no way around it. It sounds like I'll need to go to the shop & have it looked at. Thank you for all of your suggestions. If you can think of anything else, I'd appreciate it.

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