Hey guys on my boys 2011 M6 is doing some weird things. The wrench light come on and stayed on solid. The reverse beeper started beeping and R on the gauge comes on at idle with out pushing the reverse button but soon as you idle it up it goes away and doesn’t come back on again till stop and engine goes to idle again. The wrench light comes on when you push the reverse button and actually go in to reverse but comes back on when push out of reverse back to forward. I am puzzled?? I just rebuild the diamond drive a while ago and it has been running good for 150km since but now this. Any help or thoughts be great