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#1
02-08-2003, 06:54 PM
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Brake Pad warning light - Other causes
Car: 1992 500 SEL (140 Chassis)
The Yellow Dash Warning light for brake pads comes on for several days, then goes off for several weeks, then comes back on again. Does teh dash board light mean anything other than low brake pads. When the light comes on, it is brigfht when brakes applied, and flickers or is out when brakes are not applied. Sounds like the system is working fine, and the brake pads need replaced. Now the gotcha - all four sets of brake pads, all brake pad sensors and all four rotors have been replaced 10,000 miles ago (8 months). And all appear well today! The light didn't come on until last month, then went off for several weeks, then on for a day, and currently off. (Brakes went 7 months with no dash board lights light.) Could this have anything to do with the parking brake - last brake not changed.
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Thanks for the help Bill Fisher '86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle 02 E430 in the stable '14 LS460 (Lexus) - - - - - '95 E420 (198K) found a new home '99 E320 (80K) (gave it's life for me as we hit a bumper) '95 E420 (231K) Sold to a happy buyer, new to Mercedes '90 300E (65K) Sold to an Mercedes Lover '92 190E (215K) - retired to the salvage yard '93 500SEL (214K) - Moved to another family, still runs like a young pup 
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#2
02-09-2003, 08:22 AM
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Were the brake pad wear sensors replaced? Sounds like you've got a bad one somewhere.
There are 2 types of wear sensors, and one has a higher temp. capacity. I didn't know this until I had my 500 out on the track, and after 4-5 laps my pad light came on! At the end of the session I popped a wheel off in the paddock, and found I'd roasted ALL of the pad sensors, such that the wire coating had melted off and the wire within was grounding out to the metallic brake pads. The pads are the only things that'll illuminate that particular warning light-good luck 
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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss Michael 2014 E63S Estate 2006 SLK55 1995 E500 1986 Porsche 944 turbo
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#4
02-09-2003, 06:21 PM
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Thanks for the suggestions.
It may have been water (snow) that has been "shorting" the sensors. at the price of sensors, I'm thinking of replaceing the sensors. Thanks for the feed back.
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Thanks for the help Bill Fisher '86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle 02 E430 in the stable '14 LS460 (Lexus) - - - - - '95 E420 (198K) found a new home '99 E320 (80K) (gave it's life for me as we hit a bumper) '95 E420 (231K) Sold to a happy buyer, new to Mercedes '90 300E (65K) Sold to an Mercedes Lover '92 190E (215K) - retired to the salvage yard '93 500SEL (214K) - Moved to another family, still runs like a young pup
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#5
02-10-2003, 07:59 AM
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You've got to watch your routing on sensors, they will hit the wheel and ground out.
Joe
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Project Smoker, '87 603 powered wagon Hauler, 96 CTD can you say torque? Toy 73 Cougar xr7 convertible Acme Automotive Inc. Raleigh NC 919-881-0364
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#6
02-24-2003, 10:03 AM
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Problem Solved
The front sensors melted.
Could the cause be that these were not MB products?
__________________
Thanks for the help Bill Fisher '86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle 02 E430 in the stable '14 LS460 (Lexus) - - - - - '95 E420 (198K) found a new home '99 E320 (80K) (gave it's life for me as we hit a bumper) '95 E420 (231K) Sold to a happy buyer, new to Mercedes '90 300E (65K) Sold to an Mercedes Lover '92 190E (215K) - retired to the salvage yard '93 500SEL (214K) - Moved to another family, still runs like a young pup
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