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#1
12-09-2007, 07:18 PM
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1984 300SD Driver's seat is going bonkers
My front seat has begun moving on its own. This model has 8 way adjustable seats with 2 memory positions. It appears to be triggered when weight is place on the seat bottom on the side of the pad closest to the door. I can create this effect by sitting down and leaning hard to the left. It actually began a few weeks ago just after leaving the shop then resumed normal operation the next day. I chalked it up to some moisture penetration of the switch contacts that was triggering forward motion after I had a minor leak in a car wash. Today it began again. Typically, what happens is that the seat bottom will move to the full forward position while the back pad will move fully upright. Anyone seen this before? Know what to r/r? Thanks.
Last edited by tballx; 12-09-2007 at 10:00 PM. 
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#2
12-09-2007, 08:35 PM
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The 84 SD i just got does the same thing when you first start it up (also makes the wipers wipe a few times), done it 3 times so far. I havent figured out whats causing it yet though. I'm going to take the seat switch apart and clean the contacts first.
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 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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#3
12-10-2007, 01:46 PM
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Quote:
__________________
'98 E300 DT '87 190D 2.5 turbo RIP '92 S500 Sold '03 3.2TL-S A-Spec
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#4
12-10-2007, 02:12 PM
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happened a couple of times
It's been a looooong time since that happened to me, but it happened shortly after I rebuilt (well, cleaned up) the seat control int he door. Might make sure the connector is seated / in good shape?
Have you had the door panel off recently?
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~shell As of 2/2010: 2001 CLK55 0o\=*=/o0 13.6 @ 106mph 10K mi 1984 300SD 260K mi and going and going... 97 S600 46K miles 1991 Sentra SE-R (extremely dorked with) www.se-r.net
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