[tcp_ML500]

Do the lights stay on?
How long?
Do they come on when you re-start but not start?
Do they come on when you stop without turning the engine off (say a stop sign for example)

If they are constantly on from the time you start the engine and do not turn off, you owner's manual should tell you that it is quite unsafe to drive the car.

If they come on intermittently and for a short period of time, after braking to a stop and taking off, but not at all times, you might have the same problem I've had fixed last week, a stop brake switch gone bad. If your dealer rus a short test, that would be a C1200 error code.

Again, if the lights are on, your owner's manual warns you not to drive, check it out an ask your service advisor.