Hi guys. Long time SLK R170 owner, but new member. My 98 SLK 230k AMG pack known as silky is wrapped in white with red leather & chrome trims, still looks amazing for its age & comes out in the summer for the missus to play. Now I have just bought a 2008 W204 220 sport estate to kart the dogs around. I got it knocked down as it has a few faults. The command nav screen is stuff halfway out due to flat battery & being boosted ( I've read up that this sometimes happens) & coming up with a srs/seat belt fault. I've reset the ecu & fuses etc, but still there when you drive away. Now I've been a mechanic for 26yr, but specialise in other marques, so unfamiliar with benz gremlins. So was wondering if anybody knows of any specialists in the east mids/ south yorks area that can plug me in a magic box & assist without having to go to a main dealer & be raped. Any directional pointing would be greatly appreciated. Thank you kindly. Tony.