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

SL/R230: How to move stuck rollbar cylinder & identify fault??? roof won’t open?????

Old Nov 12, 2023 | 05:39 PM
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2004 SL500AMG, 2003 SL500 USA
Wink How to move stuck rollbar cylinder & identify fault??? roof won’t open?????

Hi Guys,

How do I move stuck rollbar cylinder & identify the fault?

The rollbar cylinder or its assembly component seems at fault. I detached the solenoid from the rollbar, pushed it down to lock onto the connector at the top of the cylinder rod, and the console switch operates the roof until I stop before the rear window interferes with the rear window shelf. (Before I attached the solenoid to the rollbar cylinder, the center console roof switch would only move the trunk lid straight up, get stuck; and would not reverse to close.)

The rollbar cylinder will not move. When I push the rollbar down center console button, the pump runs for about 5 seconds then stops as if it is confirming the rollbar is down. When I push the button up the rollbar cylinder does not move. (Before the rollbar up or down buttons would not move the cylinder.)
How do I get the cylinder to Move????? I have a used rollbar assembly. Do I switch solenoids… this seems easiest. Do I switch rollbar assemblies, just the cylinder, or the double up down limit switches? If switching component(s), does not get the cylinder to move, do I replace the cylinder with a rebuild?



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Old Nov 12, 2023 | 08:35 PM
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Here is some live data about the rollbar now:

---------------------1 of 2 Frame---------------------

560 Vehicle speed 0 mph



536 Rollover bar switch : NOT RECOGNIZED

'Raise' function operated



537 Rollover bar switch : NOT RECOGNIZED

'Lower' function operated



600 Magnet test faulty NO



---------------------1 of 2 Frame---------------------

370 Rollover bar lowered RECOGNIZED



371 Rollover bar raised NOT RECOGNIZED



---------------------1 of 2 Frame---------------------

520 Ignition ON YES



530 Voltage supply is o.k. YES



531 Pump temperature OK YES



532 Switch Vario roof not YES

operated



533 Limit switch OK YES



534 Activation of rollover bar YES

NOT ACTIVE



535 Actuations using diagnosis YES
NOT ACTIVE
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Old Nov 13, 2023 | 03:51 PM
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Halleluiah… The top and rollbar finally work again. Something in this hook hold-down mechanism was holding the clevis on top of the cylinder rod. It kept the cylinder from going up when I pushed the rollbar up button.


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