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Old 02-23-2001, 08:50 PM
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I've done a search for this specific problem, with no results. I have an '84 300D. The problem is that the parking brake indicator light remains on, even after the parking brake has been disengaged. If I raise the parking brake pedal up underneath with my foot a few inches, the light goes off. I adjusted the brake at the rear wheels to tighten up the slack, but this didn't cure the problem. Any solutions to this problem would be appreciated.

Thanks, Mike
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Old 02-23-2001, 09:04 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
There are two problems we encounter.

The first is when the cables are frozen or stretched. In this case you may have to replace them.

The second is when the return spring in the park brake lever is broken or worn. You have to replace the park brake pedal assy to rectify.
Donnie Drummonds
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Old 02-23-2001, 10:10 PM
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Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
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Couldn't it be low level brake fluid too?
2006 E350 w/ 155k miles (Daily Driver)

1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
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Old 02-23-2001, 11:38 PM
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Location: So. Cal
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It could be the brake fluid level if the light didn't go out when he lifts the parking brake pedal. If the parking brake shoes are adjusted properly, then the cables could be stretched. There is a finite amount of adjustment to take out the slack at the intermediate lever.
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
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Old 02-24-2001, 01:42 AM
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Parking brake

The fluid level is fine. I don't think that would have anything to do with the problem, because the parking brake isn't activated by hydraulic pressure -- it's mechanical. I've adjusted the parking brake, and it works fine. It's not stretched. It probably is the return spring, I'm guessing. Thanks a lot for the advice, Benzmac. I'll check that out.

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Old 02-24-2001, 08:25 AM
Dr Parts
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Im not sure if this is the problem but I had a shop that needed a parking brake switch the other day for the same type of car and same problem, it took me a while to find the part number. finally found the number in some old catalogs I had its 2018202110 I sent it to him and he left me alone finally. In the picture it looks like its located behind the dash close to the release lever. I have a copy of the page in the film if needed let me know. Also its availble in the Fastlane Catalog
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Old 02-24-2001, 02:50 PM
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Join Date: Jan 2001
Location: Here and there . . .
Posts: 238
It sounds like the return spring. I occasionally have the same problem with my car sometimes, although I only have to push the pedal up about a centimeter or two. It doesn't really seem like a big deal, I just have to bump the pedal with my foot if the light stays on.

The MBs:
1976 300D (W115) - 330K and still going (sort of)
1991 300D 2.5 Turbo - Sold at 221K
1983 280SEL - Sold at 206K
1981 300SD - Sold at 232K
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