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replaced all cylinder on soft top mechanism, top will not open.

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Old Aug 12, 2021 | 07:38 PM
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replaced all cylinder on soft top mechanism, top will not open.

Thanks to Krauss at Top Hydraulics, all leaking cylinders (actually 4 out or 6 but did them all, ) have been replaced.
Filled up tank with MB fluid, top closed, and tried to lower top. NO GO. Fluid dropped about 1/2 inch presume it filled the lines.
Topped it up again and tried. No movement on fluid so presume lines are full..
Windows in up position and they go down when i try to raise top. Nothing happens at the end of their travel.
Anyone have a detailed flow chart of the system interlocks and switches that run this system. Which module should I scan for on the OBDII bus?
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Old Aug 12, 2021 | 11:51 PM
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Originally Posted by neil30076
Thanks to Krauss at Top Hydraulics, all leaking cylinders (actually 4 out or 6 but did them all, ) have been replaced.
Filled up tank with MB fluid, top closed, and tried to lower top. NO GO. Fluid dropped about 1/2 inch presume it filled the lines.
Topped it up again and tried. No movement on fluid so presume lines are full..
Windows in up position and they go down when i try to raise top. Nothing happens at the end of their travel.
Anyone have a detailed flow chart of the system interlocks and switches that run this system. Which module should I scan for on the OBDII bus?
Just out of curiosity, did you make sure to close the valves on the bottom of the tonneau lift cylinders and the pressure relief valve next to the fluid reservoir? And generally undo anything else that made it possible to open and close the top manually? That would be my first step. Klaus also has a great YouTube video dissecting all of the microswitches and what problems they may cause, I'd go there second.

Last edited by crazy00c230k; Aug 13, 2021 at 12:00 AM.
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