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I have a relatively small, but irritating problem with locking and unlocking the trunk lid on my 84 300SD. I have searched the site and I have looked at my repair CD, but the solution still is not in sight. The key operates the trunk lock mechanism correctly. Counterclockwise locks, clockwise unlocks. At first, I thought that I may have only valet keys, but I have watched it operate with the trunk lid open and can see the proper movements of the latch. The central locking system works perfectly from the driver's side door location and properly locks and unlocks everything including the trunk. But when I try to unlock the trunk with the key after having locked the system at the door, the trunk will not unlock, nor does any of the other locations unlock. I thought at first that there might be some sort of electrical switch at the trunk that actuates the central system, but the CD diagram and my visual observation only reveals a vacuum diaphragm at the trunk lock. Any thoughts or solutions?
![]() Tom
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1993 300TE 1984 300D 1984 300SD 1976 BMW R90S |
#2
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I feel for you :
![]() You may read a thread about a "magic" cable under the back seat - it does not exist (on the 126). Entry through the first aid kit and license plate light are not options either.
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o) |
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The problem has to be the trunk lock. Mine works just fine. I haven't taken that area apart. I suspect the trunk key must unlock the trunk via the central locking system as opposed to the door key mechanism which pulls up on the locking mechanism and causes the other doors to lock. My locking mechanism is getting sluggish so I suspect I have a small vacuum leak somewhere but other than the drivers side door key not turning mine works great. Good luck. I imagine there will be an easy solution. The worst case is you have to get a salvaged trunk lock and have to carry around an extra key.
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My Daily : 96 E-300 Diesel with 195,000 miles Retired: 92 300D 2.5 T 345K miles and for sale Retired: 95 E320 157K miles and currently parked with blown engine Both retired cars are for sale as is my w124 shop inventory |
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Quote:
![]() Actually, to respond to the question, I thought that I was having the same problem and did not try to do anything about it until my battery went dead one day and only the driver door would unlock with the key. I tried the trunk and it did not unlock the first time so I tried again (one definition of insanity is that you keep trying the same thing with the same result) and found that if it turned the key and pushed the button in at the same time, the trunk would unlock. It has worked the same way since then.
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1984 300SD 326,997 miles and counting . . . No wait, my odometer is still dead ![]() |
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Quote:
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o) |
#6
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I've got a strange problem with the trunk lock in my 300D too. While it does lock the problem is when you have the lock turned to where you can open the trunk by just pushing the button, it can be opened when the rest of the car is locked but stays locked when the car is unlocked. Seems like something is bassackwards.
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DJ 84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012 ![]() |
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Quote:
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o) |
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