Originally Posted by
badcookie
Update on the brake light failure... Turns out it was the switch on the right was a hair to short. I would assume it was causing an intermittent contact failure. The one on the left is longer and thus works like it should. Thats what I get for not checking the new and old parts to make sure they were the same. LOL
Those two switches are the same.
I had a defective brake light switch in the W202. I learned when you replace the switch, you pull the end of the switch out as far as you can. It will "ratchet" out several millimeters. Then you install the replacement switch while holding the brake pedal depressed. When you release the pedal, it will compress the pin, and self adjust.
This drove me nuts for some time till I figured it out.