It means your break pedal switch is stuck is open position. remove the under dash plastic panel and release it with your hand and your car is good to go.
What_do_the_warning_light_BAS_mean_on_the_1999_Mercedes_C280Read more: What_does_the_BAS_ASR_light_mean_in_a_1999_c200
Most likely cause would be the stop lamp switch, located on the brake pedal. Do you know the code? If the code is C1200 then it IS the stop lamp switch. Just remove the underdash panel and you can see and replace the switch.
most likely you have bad brake light svitch
It means your brake pads need changing.
90% of the time if you buy a new brake lamp switch for $15 bucks and install it yourself, it will get rid of this problem.
I used to get the same light frequently. What I do is, make the wheels in straight position, stop the car, stop the engine, remove the key and then start the engines again. this is it.
on those model it is most of the time a sansor somewhere that is defective. clean or replace. you will need a diagnostic to know wich one.
It should tell you in the handbook. For the SLK it is turn the steering from lock to lock whilst the engine is running. May be the same for other Mercedes.
bas esp light
in the fuse box of the engine compartement, take of the cover of the box then see that
It is integrated onto the ABS pump in left front of engine compartment.
Could be failed brake light switch