I bought a brake light switch to fix a ABS BAS ESP error. I took the panel off to gain access to the brake switch then removed another panel and saw where the switch yet there was not one in there or any wires nearby. This tell me I looking in the wrong spot. There is a bracket and notches that allow it to be installed there but not wires. Another hint is that the 2nd cover took off over the pedal would not be able to be reinstall if I put a switch there it would hit it . That tells me it has to be somewhere else for this model 4 matic. Where else should I look ?