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Mercedes-Benz Master
17,130 Answers
- Posted on Sep 30, 2011
Re: 2000 mercedes s500 brake light always on
The brake switch is a pressure switch mounted on the brake pedal, master cyclinder output which on pressure will contact and switch the brake lights ON.
So if the brake switch is defective then it must be replaced, check for wiring leads, the ground connection of the brake light assembly.
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