I have the orange brake pad wear light on intermittently in the dash; it happened just recently. 1995 E320. Checked the brake pads, and they seem fine. They work great. How accurate is this light, or does MB just have a high threshold of when they think its time to change the pads?
The light comes on when the brakes are applied; also sometimes when the steering wheel is turned. It does glow steadily when the brakes are applied.

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2002 Mercedes-Benz E320 4Matic
1995 Mercedes-Benz E320 Wagon
2005 Land Rover LR3 V8 SE
1999 Audi A8 4.2L quattro

I believe on most models, the light is set to come on when there is 3mm of pad left on the front, and min thickness is 2 mm. Some models have rear sensors too.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

That is the way my warning light went as well. This is normal operation. It will soon be time to do the brakes. I believe the light is intermittant because the rotor is the ground path for the circuit, so initially it comes on only under braking conditions.

How long until brake work is based on driving style, distance, and time. I just ordered the parts when the light began to indicate intermittantly, and put the parts on as soon as they arrived.

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1992 500SEL 25K
1995 E320 40K
1995 SL600 120K
2002 JX8 Sport 43K
2005 Volvo S40 95K
2006 Isuzu NPR 304K (Frankencamper)
2007 Crown Victoria 150K
2014 Smart Electric 20K

Great. I will order the parts soon. By the way, are there any good aftermarket pads that have the sensor, or should I go with OEM? Also, the brakes are starting to squeal. Will this go away with new pads?
Thanks.

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2002 Mercedes-Benz E320 4Matic
1995 Mercedes-Benz E320 Wagon
2005 Land Rover LR3 V8 SE
1999 Audi A8 4.2L quattro