1999 740iL, (1)the drivers front seat moves intermittently (typically the seat back moves which is startling when driving). (2) the phone intermittently will not auto power on on car start. (3) when reversing at slow speed then shifting into drive, the transmission seems to half grab and slip all others I have driven grab solid... any pointers would be helpful, I have had it to bmw service 3 times with no luck just frustration...