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Brake light switch problem may cause the ESP / BAS lights to illuminate.
Common symptoms of a bad
Mercedes brake light switch.
Car stuck in Park.
ABS ESP ETS lights come on.
Can not move the shifter from Park to Drive.
Brakes Defective Warning on Instrument Cluster
Car won't shift gears. Stuck in 2nd gear, limp mode.
Brake lights don't work. (Brake light switch can still be defective even if the brake lights work. Checking the brake light operation is not a good test.)
ESP, BAS, ABS lights turn on. Car won't shift properly. Stuck in gear.
TEST: To test your new brake light switch: Turn you car off to reset the ABS light. apply the parking brake. and start the car in neutral or park without using the brake. if the problem is the brake light switch... the light will only come on when you press the brake pedal.
If you replaced the brake light switch and the light is still on you should check a few other things such as:
Fuses and Relays
ABS wheel speed sensor
Brake Fluid Level
Get an advanced scanner to read trouble codes.
NOTE: ** You may need a MBZ scan tool to reset the error code which was stored in the ECU because of the bad brake light switch.
Just bring down the hydraulic level to where it should be. Use a drinking straw, place into reservoir, put your finger over top of straw, lift straw up and out of reservoir and let go into a container. This may take you a few minutes, but it will be worth not having to worry about this anymore. GOOD LUCK FRIEND.
your can check is it something stuck in the lock, first operate your roof either way, if you are going to open the roof as a first action boot lid will open to backward, let boot lid fully open and stop operating the roof, ignition off and have a look if something stuck you can see, if you are going to close the roof let close the roof and before close the boot lid stop operating roof switch, otherwise faulty boot lid lock, if faulty lock but you can try by mettle key blade which is in your electronic key, first take out mettle key from electronic key then insert mettle key in to the key hole in boot lid turn fully left and open boot if not work turn fully left and push it in, is this information helped you?
If you fixed let me know I have the same problem on my slk 99. For your information a MB guru told me that is the ETS/ASR CONTROL MODULE that is attach to the ABS hydraulic unit
no 0205459632. It is very expensive I ordered. I will post results in two weeks.
First check that you have oil on the hydraulic pump that it is inside the trunk on the rear right fender the oil should be between the marks. If thats ok check when you put the ignition on if the switch that operates the roof is on, should be off, on means that something is wrong, if blinks 6 times one of the 5 or 7 switchs are not closed, check one by one. check the two that close the trunk at the middle, the cover, the trunk limit switch, the trunk switch
Call them first to ensure policies haven't changed, but all of the chain auto parts stores have offered a free scan of the computer to read out error codes that may be on target or at least give a clue.
M-B may or may not use standard codes but my scanner lists both diesel and gas categories for them.