From reading my manual for my 92 400E when these lights come on they disable the Anti lock Brake System and the Acceleration Slip Control. Now that it is winter when these lights come on it has become a issue and this problem has only come up in the last 6 weeks. They come on with no definitive situation. I start off, the lights are off and then they come on with no specific condition, acceleration, deceleration, braking or slipping on ice. I can even be in cruise control mode and they light up. My plan is to take the car to my dealer this week but I would like to have info about the system and what could cause this issue so I can discuss the subject . Please help.