E-Class Coupe (C207) & Cabrio (A207) 2010-: E250CDI Coupe, E350 Coupe, E350CDI Coupe, E500 Coupe, E550 Coupe [Coupes & Cabriolets]

Fixed Hydraulic Hose leak - 2011 E550 Cab

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Old Sep 4, 2025 | 03:26 AM
  #1  
srphayre's Avatar
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2011 E55 AMG Sport
Fixed Hydraulic Hose leak - 2011 E550 Cab

HI ALL -

I finally fixed the leak in the hydraulic hose in my roof!

It was a fairly involved problem to solve as the leak was sufficiently bad that the roof would not open without spewing hydraulic fluid everywhere, and then eventually wouldn't open at all beyond unlocking the fasteners at the windshield. I was able to use some tape, some hemostats, and other contraptions to get it temporarily sealed to get the roof into a position that allowed me access to the broken section.

I bought 2 bottles of replacement fluid and a syringe to keep the tank topped up while I managed to get the roof open and splice in the couplers and section new line.

You can see in the photo that I had to remove the section of the hose that was damaged, and give sufficient new hose line so that the bend/fold would still be at a hose section and not at a coupler.



There are a bunch of resources out there to make this fix a workable alternative to having to pay thousands for a shop repair.

Big shout out to the guys at Cabriolet Hydraulics in FL who were extremely prompt at getting items shipped out (including a replacement nut for a coupler when one of them mysteriously disappeared onto my gravel driveway while I was battling the onslaught of fluid leakage)...

I'm happy to chat with anyone experiencing a similar leak, and share my lessons learned etc.

Car Wizard video:

Grey Trend video:

Cabriolet Hydraulics: https://cabriolethydraulics.com/hydr...pair-couplers/

Amazon Link to Hydraulic Fluid: https://a.co/d/8ESvZVC

Harbor Freight link to Lubricant Suction Gun: https://www.harborfreight.com/lubric...gun-59513.html


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Old Nov 9, 2025 | 07:05 PM
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2014 e350 conv
Good job how did the line break did it get caught in the mechanism and get pinched
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Old Nov 10, 2025 | 01:39 AM
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2011 E55 AMG Sport
I'm not really sure - I think that it had come away from the clasp thing and was probably being bent in a way that it wasn't supposed to be.
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Old Nov 10, 2025 | 01:42 AM
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2014 e350 conv
Yeah, from what I understand you have to do routine checks to make sure that the cables are secure in all of their holders. Or the line can get caught in the mechanism. It gets pinched and then it gets a small cut and starts to leak. At least you got a fix for a small price. I believe Mercedes charges like four grand. They have to remove the whole top the line. Very labor intensive.
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