SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Trunk Release not workking

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Old Jun 8, 2020 | 12:44 PM
  #1  
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Trunk Release not workking

The trunk trunk lid will not open. I have tried the trunk handle, release button on the door, key fob, and the auxiliary key inserted under the trunk lid. There is no resistance on the trunk handle when i pull it. The roof is down. Im guessing its the release assembly. Anything i should try before bringing it in??
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Old Jun 9, 2020 | 06:31 AM
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Originally Posted by Danny1234
The trunk trunk lid will not open. I have tried the trunk handle, release button on the door, key fob, and the auxiliary key inserted under the trunk lid. There is no resistance on the trunk handle when i pull it. The roof is down. Im guessing its the release assembly. Anything i should try before bringing it in??
Ooh that is a bad place to be with the roof down, have you tried pulling the fuse behind the seat? 20A one.
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Old Jun 9, 2020 | 06:36 AM
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Have you made sure you've inserted the manual key into the lock, and held it turned, at the same time as pressing the release button?
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Old Jun 9, 2020 | 07:22 AM
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i was hoping it might be a fuse but wouldn't it still open manually with the key even if the fuse was shot
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Old Jun 9, 2020 | 09:40 AM
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Originally Posted by Danny1234
i was hoping it might be a fuse but wouldn't it still open manually with the key even if the fuse was shot
Not unless you do what I said above, have you tried holding the key turned and pressing the release at the same time?
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Old Jun 9, 2020 | 11:11 AM
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Originally Posted by matk
Not unless you do what I said above, have you tried holding the key turned and pressing the release at the same time?

Just tried that and yes it works. But that is still the only way it works, not with fob or release on door or just pulled the handle. And when i open it with the key i can hear a hissing coming from the locking mechanism. I am assuming that i will cause severe damage to the car if i try raising the roof in this state. Thanks guys, any additional thoughts?
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Old Jun 9, 2020 | 11:56 AM
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[QUOTE=Danny1234;8077228]........when i open it with the key i can hear a hissing coming from the locking mechanism. I/QUOTE]

Find the source of the hissing...sounds like you have an air leak.

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Old Jun 9, 2020 | 12:48 PM
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Read this?

https://mbworld.org/forums/mbworld.org/forums/showthread.php?t=355467

I’d try pulling and replacing the fuse to get a pump reset. If you can get it to work just one time start the car and get the roof up. Then you can do the rest at your leisure?


Last edited by matk; Jun 9, 2020 at 12:51 PM.
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Old Jun 9, 2020 | 01:17 PM
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Originally Posted by Danny1234
Just tried that and yes it works. But that is still the only way it works, not with fob or release on door or just pulled the handle. And when i open it with the key i can hear a hissing coming from the locking mechanism. I am assuming that i will cause severe damage to the car if i try raising the roof in this state. Thanks guys, any additional thoughts?
There is no problem with closing the roof with the trunk closed, that is the normal state, you cannot close the roof with the trunk open or unlatched.
Why do you think you will cause damage?
You will not be able to OPEN the roof with a non-functional PSE locking pump.
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Old Jun 11, 2020 | 12:13 PM
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[QUOTE=decorily;8077274]
Originally Posted by Danny1234
........when i open it with the key i can hear a hissing coming from the locking mechanism. I/QUOTE]

Find the source of the hissing...sounds like you have an air leak.

that's the problem, thank you all.. Hopefully they can repair it without replacing the unit, About $800 for the parts in Canada, Might have to try Eb#y
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Old Jun 11, 2020 | 02:34 PM
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[QUOTE=Danny1234;8079210]
Originally Posted by decorily


that's the problem, thank you all.. Hopefully they can repair it without replacing the unit, About $800 for the parts in Canada, Might have to try Eb#y
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