I got my M3 about 2 weeks ago, and ever since the lights around the RPMs stop with one notch of orange at 8000 then the 2 red in 9000? I'm pretty sure this is what tells you when the engine is completley heated up, and was wondering if this is normal. I also needed to know if it's easy to fix a rattle with the harmon karter system. The right door has already started rattling. Thanks for any help.