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Old 04-02-2001, 06:39 AM
Davis Lo
Posts: n/a
I recently found my 95 S320L's door closing aids don't work properly- 3 out of the 4 doors can't close. It seems that the pump is not 'POWERFUL' enough to close the doors. However, the trunk's closing assist works fine. I found the fuse box in the trunk but can anyone tell me which fuse is the #9 one? I just installed a new battery (standard 100Ah one) but I used a lower 'A' one for a week to replace my old flat one. Dose it affect the pump's operation?? Any advice appreciated !!
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Old 04-02-2001, 03:20 PM
Posts: n/a
just wanna remind you that the trunk close assist. is using different vacuum pump. I think you should check the vacuum line first, if it doesn't leak, you better change the vacuum pump for door close assist. it's pretty expensive, try to find an used one in junk yard or....

good luck.
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Old 04-02-2001, 03:37 PM
David C Klasse's Avatar
CheFrac is Back!
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
This happened about 2 years back to us on the S420. I remember the trunk still closed (and I think the driver door did too, but can't be sure). I don't recall what was wrong with it, but it was fixed under warranty. If I can find the work order receipt, I will be back later tonight to let you know what went wrong with ours.
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
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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Old 04-02-2001, 04:45 PM
Registered User
Join Date: Feb 2000
Location: Columbus Ohio
Posts: 709
Very common problem with 140 body.......sometimes you can pull out the fuse for 10 seconds or so and it will reset.....sometimes this only works temporarilly though....replacement was $950 at my local MB dealer...and I also noticed that the new one one seemed to work faster(stronger) than the old...maybe an update?
I also think there was a trunk latch update as of the 1995 models...I was offered this by my dealer for $250.00 and I declined.

1992 300SD 112K
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Old 04-03-2001, 07:00 AM
Davis Lo
Posts: n/a
Thanks for your advices!!! OK, I am going to reset the pump and can anyone tell me which is the FUSE #9 in the fuse box in the trunk ??? Please describe the position of it. THANKS AGAIN !
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