Enga, I saw your signature. Where in Ga are you?? I work at a shop in north Gwinnette. If you need some help, I will try.
You can get a small, tool from AST for about $700. They are Mercedes Specific. Your car has a good digital system that will help identify problems.
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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM