How to Enter the Engineering Menu on a Mercedes

by David S

Instructions

Step 1

This has been tested on a 2010 E550 Coupe (C207). It should also work for W212 and current C class models

Step 2

Three buttons are involved: the hang up call button...

Step 3

The 1 and the # buttons.

Step 4

Press and hold the hang up. 1 and # buttons together until you enter Engineering Mode. I can just about do this with one hand if the shifter is in N or D.

Step 5

From Engineering Mode you can also enter Engineering Setting. Do this by pressing Hang up, 4 and # together.