Should be plug and play. I had the trans ECU fail on a 99ML430 and swapped it out. Don't recall having to initiate or sync anything. Proceed with caution.

__________________
1981 300TD
2005 C55
2004 E500
1999 ML430
1992 400E
1998 C43
2001 SL500
1988 300SEL
1986 190E 16V
1991 190E 2.6