I think it is brake switch that is bad... there is two switches in there...
one for light and one for tranny. Your owner's manual should tell you how to
get the gear out of Park in event it doesn't work.
Once you do so, it will verify everything in transmission is fine.
Exactly right, but to be more specific there is a circular hole near the
top of the shift lever gate. It is possible to put a pencil down this
hole and disengage the lock. Now it should be possible to move the shift
lever out of Park. You should find instructions in the user manual.
I always kept a pencil handy for this operation. Eventually I had my
local garage clean and lubricate the brake pedal switch and the problem
Mercedes ought to provide the pencil but it would probably rust.
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