I would have started at the dealer because of the miles. I'm sorry that you didn't. You might want to take it there now. I know my dealer would have tried to help.
Yes, I have heard of this before and so have they.!!
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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