Take off the exhaust hangars to gain access. Use a 22mm wrench to take loose and retighten. Go to a tech to inspect and clear the codes.

------------------
Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM