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· Registered
01 C240 AT
270 Posts
Discussion Starter · #1 ·
I have BAS message, code "bad brake switch".
I removed switch, checked it with multimeter, it was really bad.
I got one from junk yard, it was good. But I still have "BAS" message.
I guess I need to begin checking wires etc.
Any ideas?

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
25,462 Posts
I believe there is also a switch integrated into the BAS/ESP system. I'd check that one. For MY2002, they actually deleted the plunger switch on the pedal and use the BAS/ESP switch only. Also, I believe that if the plunger switch is bad, your brake lights stay on.
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