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#1
03-29-2004, 02:15 AM
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Brake pad light won't go out
A couple of weeks ago, a friend replaced my brake pads on my 1980 300sd.
He has done them for me for several years but this time, there is a problem. The yellow brake pad wear light stays on and he double checked and all the sensors are in place. Could there be a simple solution for this? Thanks 
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#2
03-29-2004, 02:22 AM
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mine too is turned on all the time but i too have all good pads. sorry i couldnt help you. let me know what was the matter with yours.
__________________
have no worries.....President Obama swears "If you like your gun, you can keep it 
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#3
03-29-2004, 09:31 AM
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Ours too on the "82 300D. Replaced the pads. Brakes work fine. Light stays on.
Joe
__________________
www.jerseyplanning.com 1987 300TD 440K - My car 2005 Jeep Grand Cherokee Laredo 107K - Tim's car 2000 - CLK320 100K - Deb's car 1994 C230 150K - Josh's Car
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#4
03-29-2004, 12:47 PM
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My daughter's 240D did the same thing. The warning circuit goes thru the Seatbelt warning buzzer unit under the drivers dash. I swapped it out with the TD unit and the lights all are correct now.
Actually it is probably the test circuit part of the warning light. The resistor and diode on the back of the instrument cluster grounds to the charge indicator light which is actually grounded in the "warning module" as Mercedes calls it or the "seatbelt warning buzzer" as Fastlane lists it. Item number P2064-70204 "seatbelt warning buzzer" Its actually a control/timming/routing unit for the warning lights in the dash. Dave
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1970 220D, owned 1980-1990 1980 240D, owned 1990-1992 1982 300TD, owned 1992-1993 1986 300SDL, owned 1993-2004 1999 E300, owned 1999-2003 1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD 1988 560SL, 100,000mi, owned since 1995 1965 Mustang Fastback Mileage Unknown(My sons) 1983 240D, 176,000mi (My daughers) owned since 2004 2007 Honda Accord EX-L I4 auto, the new daily driver 1985 300D 264,000mi Son's new daily driver.(sold) 2008 Hyundai Tiberon. Daughters new car
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#5
03-29-2004, 01:26 PM
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For my '81 300TD
there were actually brake wear indicators that required replacement along with the brakes. Ordered them form Fast Lane, I think, and they were very inexpensive- I think I paid $15 for all 4 or so.
Maybe yours is different?
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#6
03-29-2004, 01:44 PM
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Did you replace the sensors?
__________________
1994 C280, dark green metallic 105k miles 1991 190E 2.6, Black 191,500 miles (sold to another forum member) 2003 Chevy Tahoe LT, Redfire Metallic 105k miles 1989 Mustang GT Cobra Convertible 43k miles
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#7
03-29-2004, 01:48 PM
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Another thing to check is the brake fluid level in the reservoir. When changing pads if you force the pistons in the caliper in all the way (in order to insert new pads) some fluid can be pushed out of the reservoir, lowering the level and making the light come on. Pull the plugs on the reservoir to see if that is the source of the warning indicator.
DDH
__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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