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#1
03-20-2014, 12:44 PM
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What is this Thing on a 1984 300SD?
This black gizmo is on the passenger side of the engine compartment, just aft of the headlight.
What is it? What does it do? At idle it vibrates and makes its own special rattle noise. There are two horns in front of the radiator, so I'm pretty sure its not a horn. ::  ::
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. 1st MBz: 1982 300SD 2nd MBz: 1987 300SDL 3rd MBz: 1995 S420 4th MBz: 1987 190DT 5th MBz: 1984 300SD w/1983 300DT engine 6th MBz: 1999 C230k I'm 3rd owner, got it w/57,235 miles. and manages Mom's 2007 R320 CDI 
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#2
03-20-2014, 12:50 PM
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Quote:
There you go then!
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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino http://i.imgur.com/LslW733.jpg The Baja Arizona Oil Burners Send a message if you'd like to join the fun  Left to Right - UberWasser, Iridium, Stuttgart-->Seattle,, mannys9130 Visit the W123 page on iFixit for over 70 helpful DIY guides!
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#4
03-20-2014, 02:30 PM
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No such thing on any of my cars.
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85 300D 3 pedal. Current project. 83 300TD (need rear wiper assembly dead or alive) 84 300SD Daily driver 85 300TD almost 400k miles and driven daily. 98 E300D *sold 86 300SDL *sold and made flawless 10 hour journey to new home. 
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#5
03-20-2014, 02:52 PM
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That's the horn for the factory alarm system
 -J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#6
03-20-2014, 03:21 PM
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Quote:
I don't see the front end for the alarm system anywhere, so I'll do some tracing of the cables and maybe remove the gizmo, alarm horn.
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. 1st MBz: 1982 300SD 2nd MBz: 1987 300SDL 3rd MBz: 1995 S420 4th MBz: 1987 190DT 5th MBz: 1984 300SD w/1983 300DT engine 6th MBz: 1999 C230k I'm 3rd owner, got it w/57,235 miles. and manages Mom's 2007 R320 CDI
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#7
03-20-2014, 03:31 PM
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That is the alarm horn. When my alarm system failed and the horn would not shut off I cut the wire. No more alarm.
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98 E320 4matic Wagon 84 300SD (2 ea.) 51 Chev 1-ton PU Assorted old motorcycles
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#8
03-20-2014, 03:43 PM
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The alarm "computer" lives in the passenger footwell. It's made by Becker.
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#9
03-20-2014, 08:31 PM
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My wife was driving our 84SD right after we bought over 10 yrs ago. Suddenly the horn started beeping, scared her at first, and wouldn`t shut off. drove it down to the Indy, they put the key in the door and turned it, and that shut it off.
Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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#10
03-20-2014, 08:50 PM
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Quote:
 .My 'SD doesn't have a factory alarm system, I guess.
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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod 2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."
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#11
03-21-2014, 09:26 AM
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Quote:
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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors. 2003 S430 - 107K 1983 300SD - Tanoshii - mostly restored ~400K+. 1983 300SD - Good interior. Engine finally tamed ~250K. Monark Nozzle Install Video - http://tinyurl.com/ptd2tge
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#12
03-21-2014, 10:47 AM
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Quote:
__________________
1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino http://i.imgur.com/LslW733.jpg The Baja Arizona Oil Burners Send a message if you'd like to join the fun Left to Right - UberWasser, Iridium, Stuttgart-->Seattle,, mannys9130 Visit the W123 page on iFixit for over 70 helpful DIY guides!
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#13
04-08-2014, 09:11 AM
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message for anyone who knows about factory alarms on 350SDL
 Quote:
I have no info. It appears that the horn is inside the cowl on the 1990 350 SDL. Can I deactivate by going into the " passenger footwell" and cutting some wires ? It also activates the the headlights. Feedback, please! The car is at an indie because I can't drive it that way. and I have no details for the alarm itself which has never worked until today!
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Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6
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#14
03-22-2014, 03:05 AM
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Quote:
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'06 E320 CDI '17 Corvette Stingray Vert
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#15
03-22-2014, 04:25 AM
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I am still finding and pulling out parts of the aftermarket alarm on my car. still need to remove the air horns and i just found a sound sensor by the drivers feet.... i have enough extra wire run through the car to wire another car
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"NEW" 1984 300D TD needs some love
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