My 2009 GL550 doesn't show a brake lamp switch like many other GL models do as this switch is shown to be problematic. I do see a brake pedal limiting
I've run the Rig Test several times and the ESP is off and no EBV is showing. ABS light stays on. When I press the reset button RIG TEST message goes out and digital dash performs as should.
Seemingly there's five "try this" for every one code. Confusing to a novice like myself. Likely my question(s) won't be succinct but I'll try.