Question about 2006 BMW 3 Series

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Check gas cap indicator light

The "check gas cap" indicator light comes on after filling the car. Changed gas cap, still comes on. System checked, no leaks can be found.

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  • Anonymous Jan 08, 2009

    I took my 2006 BMW X3 to the dealer multiple times and they gave me mumbo jumbo:  said the diagnostic check had indicated a dirty seal around the cap and the second diagnostic check said it was fine. I drove off the lot and filled up. The light came on. Finally I had service done today and reminded them about the light. Turns out there is a glitch in the module (DME i think) pertaining to the gas sensor. It can be rectified by a software download/update. The dealers are only just now becoming aware of the release of this software. Good luck!

  • Anonymous Jan 08, 2009

    also, I am told you cannot fill up with the key on (duh, right? But they mean not even turned to accessory) and you cannot fill up with the radio on.

  • Anonymous Mar 29, 2014

    my gas gauge is not indicating the gas correctly will my gas light indicator still light on when my gas tank is low ?

  • Alfredo Jara
    Alfredo Jara Dec 17, 2015

    I got the same problem, check gas cap, what can ido?

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1 Answer

Do you have the key in while filling?

Posted on Sep 07, 2008

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