Yes, I have tried opening when it says fueling is not possible, and it does not open. It could be related to the fuel tank pressure and temperature sensor. I think I pulled that code up a while back, but basically ignored it as it does not affect operation of the REX, and is not required for inspection in PA. I looked up the video on how to change it, and it looks like a REAL PAIN. It involves dropping the whole gas tank and taking it apart. The sensor is in a compartment under where the evap. canister is mounted, and takes a special BMW only tool to remove the compartment cap after you remove the evap. canister. I also read the replacement sensor is gold plated and the failure is due to corroded contacts. I just didn't put this together with the issue opening the gas cap. Oh, the 15 seconds mentioned above is really 25 seconds, two or three times. I edited that post to correct the typo.
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