Key on, doesn't matter if the engine is running or not.

Press the button for 3 seconds & count the blinks.
Press for 8 seconds to erase after counting.

When you get 1 blink all of the codes are erased.

GAS cap will not cause any code on a 1995 car!

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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