(Note: Not the parking brake light but the one next to it, the pad sensor indicator)

Started back in the winter. The parking lot I was using daily was never plowed so I often had to park on very uneven ground. Sometimes when I started the car the light would be on and when driving away I would feel the light 'jitter' and the light would go out.

Now i'm driving 100 highway miles every day and the light occasionally glows (It doesn't turn completely on) What's more it really likes to do this when i'm on a banking right hand turn and turns off completely if i'm taking a left hand banking turn. (Only at highway speeds) The light also goes out completely when I apply the brake pedal. It will also occasionally do this on straight sections.

I'm at 290,000 miles and have never touched the calipers. The front brake pads still have plenty of meat on them adn the rears are less then a year old. Potential note-the right front wheel always has considerably more brake dust on it then the left side.

What am I looking at? Bad sensor? Bad connection? Or potentially a seizing caliper?

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1982 300GD Carmine Red (DB3535) Cabriolet Parting Out
1990 300SEL Smoke Silver (Parting out)
1991 350SDL Blackberry Metallic (481)

"The thing is Bob, its not that I'm lazy...its that I just don't care."

Sounds like a bad connection, probably at the caliper. If the wires are cut the light will go on when you start the car but will go out after you start moving. The fact that the light semi-lights indicates to me that they are all connected but one of the wires has a tough time carrying the current all the way through - so it may be hanging by a few threads or could possibly be a corroded connection, could have had a rock kicked up and hit it in just the right spot, etc. Are your brake pads wearing evenly (despite the dust distribution)?

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth