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  #1  
Old 11-29-2004, 03:06 PM
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Trunk lock problem

Hi I ran into trunk lock problems today on my 1984 300sd. I used the hammer the lock button method to get it open. It seems the problem was a electrical solinoid that keeps the button from moving burned up. Does anyone know what controls this? Also there is a cable also connected to the same latch as the solinoid. I suspected it was a manual overide but I can't figure out were it goes. Does anyone know anything about these two parts? For now I justed disconnected the solinoid and am relying on the vacuum system to lock the truck. I need to rig something up in case that fail's. I really don't want to have to drill on my car as some have had to do.

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  #2  
Old 11-29-2004, 11:16 PM
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Believe the cable that is also connected to the latch is indeed a manual overide and that it goes into the rear seat area of the cabin. Think that you need to remove the seat bottom to find the pull handle.
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  #3  
Old 11-29-2004, 11:21 PM
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kotarbi,

The electric actuator is a redundant lock associated with the factory alarm.

Check my posts in this thread: trunk won't open

The manual override is a wire "loop" handle at the edge/under rear seat, driver's side. Two man operation. Directions are in the owner's manual. Good luck.
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Old 12-01-2004, 09:49 PM
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Thanks for the info!
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  #5  
Old 12-02-2004, 06:46 AM
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Is there a cable on the 123 also? I have never looked but have wondered how to open the trunk if the vacuum were to fail when the trunk was in the locked position.
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Old 12-02-2004, 07:05 AM
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Quote:
Originally Posted by TwitchKitty
Is there a cable on the 123 also? I have never looked but have wondered how to open the trunk if the vacuum were to fail when the trunk was in the locked position.
Yes, there is. Like on the 126, the cable goes to the rear seat area. On my car, it was under the cushion, on the driver's side.

However, unless you have a factory alarm or don't have a "master" key, there shouldn't ever be a time that you can't open the truck with the key unless the lock mechanism messes up.

I actually had to use the cable once, when the factory alarm failed and locked my trunk. Came in REAL handy, believe me...
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Old 12-03-2004, 12:28 AM
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Does this apply to all years of the 123 Chassis or was this added after some year of production, like so many other items on our cars?
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  #8  
Old 12-03-2004, 12:42 AM
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None of my 123s have a cable to the trunk.
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Old 12-03-2004, 09:34 AM
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There is no mention of it in the 123 owners manual and besides 123's are vacuum locks and when vacuum fails you trunk comes unlocked, unless you manual lock it with a key. Hence no need for release cable, and why none is used on 123 cars.
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  #10  
Old 12-03-2004, 10:11 AM
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Quote:
Originally Posted by oldnavy
when vacuum fails you trunk comes unlocked, unless you manual lock it with a key.
Tell that to my wifes car. The vacuum lock system is currently disconnected due to a leak I don't have time to track down. I've even unplugged the vacuum lines from the trunk lock. But it insists on re-locking itself.
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'84 300D Turbo 240k (Anthracite Grey) - Garage Queen
'83 300D Turbo 220k (Orient Red) - WVO - Wifes daily driver

I'm not a certified mechanic, but I did stay at a HolidayInn Express last night.
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  #11  
Old 12-03-2004, 11:14 AM
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same problem 1983 300d

I have the same problem with mine. The trunk is locked, the key won't turn the lock and I can't open it. Is there a solution???
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  #12  
Old 12-03-2004, 03:13 PM
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The trunk has to be locked manually with key if vacuum fails. I thought I had same problem when I first got my 240D, but the ignition cylinder & key had been replaced by non matching set and once I found the right key I could lock and unlock the trunk. Also the lock has a funny sequence for turning befor it unlocks.

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