SLK-Class (R170) 1998-2003: SLK 200, SLK 230K, SLK 320

SLK/R170: Trunk not in locked position (roof problem)

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Old Sep 18, 2020 | 12:08 AM
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Trunk not in locked position (roof problem)

My car's roof isn't working (leaking front locking ram) so I lowered the roof manually recently to have a drive around with the top down.

When I put the roof back up I discovered that the trunk locking mechanism hasn't engaged and my trunk is "loose". I tried using the roof button to no avail. I suspect that the fluid level is too low to activate the roof to complete the cycle.

Is there any way to lock it manually?

I am referring to the two locks that need to be manually opened using the cable pulls...

Last edited by Kiwi_SLK; Sep 18, 2020 at 12:10 AM.
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Old Sep 20, 2020 | 04:09 PM
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No one huh?
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Old Sep 24, 2020 | 06:41 AM
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From: Englewood Florida
2003 SL500, 2016 VW CC R-Line coupe
Well, I'm suffering on same issue but I have a 2003 SL500 Designo hardtop convertible. Thought it was related to the Electrical Services Battery in the trunk but I put meter on it and it tests out at 12.4 volts which I think is ok. I can hear the electric motor working when I activate the close/open roof mechanism. I will try to probe deeper.
Peter
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Old Oct 4, 2020 | 09:24 PM
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Potentially mine is due to the "tongues" that slot into the locks needing adjustment.
However I'm not long off repairing my roof, so I'll leave any adjustment until after that has happened.
I suspect that doesn't help you though.
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Old Oct 5, 2020 | 07:51 AM
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From: Englewood Florida
2003 SL500, 2016 VW CC R-Line coupe
  1. Thanks for the input! Unfortunately, two of the actuators (6 in all) need to be replaced. There was only one bad one and it was not a mercedes OEM part! Somehow, this one failed and it was recommended that the one next to it be replaced at the same time because it was taking the load of the bad one for some time. Expensive fix and I looked into having them rebuilt but the cost was almost the same as new OEM from Mercedes, so not worth it. Hopefully I won't have any more problems for a long time.
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Old Oct 10, 2020 | 12:12 PM
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While I was replacing my hydraulic pump I saw same problem...pushing down did not lock into slots. But by using red button inside I was able to power the roof down enough to lock top by pushing forward on red button....worked forme.
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Old Oct 10, 2020 | 04:08 PM
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From: Englewood Florida
2003 SL500, 2016 VW CC R-Line coupe
Mine was more serious, replaced one actuator and fixed it.
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