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97 Mercedes E420, 2000 Porsche Carrera Cabriolet
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25 Posts
Discussion Starter · #1 · (Edited)
My 97 E420 is having a problem with the ASR/ABS light coming on. Brakes seem to be fine, and brake lights work too. Also cruise control is out. Anyone have a fix for this one? Again, the brake lights come on as pedal is pressed so I don't think we have a bad switch unless it's bad, but working as well.

Marc
 

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99 E430, 01 E430 Sport, 00 SL500
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3,261 Posts
The problem sounds so familiar. If I remember correctly, the brake switch should be renamed to brake switches because there are 2 contacts inside the casing to do 2 different things. If 1 particular contact is broken, you'll see "lamp failure" on the display.
 

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2002 E320 210.065
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91 Posts
The brake switch (located above the brake pedal) is the first place to look for the problem. It is a very frequent culprit.
Part number is 0015456409 and it lists for $20.
There have been reports of faulty aftermarket switches, so it is a good idea to replace with the OEM part.
 
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