The convertible top operation may be failing due to a problem with the N10/3 (combination control module), which is the module that controls the convertible top. Hopefully, by now, you have pinpointed the problem. Use a clean syringe to add fluid to the reservoir.Remove the 12mm bolt from the reservoir.You will need to remove the trunk lining to see the reservoir. In most Mercedes-Benz cars, including SL, SLK, and CLK classes, it is located in the trunk left or right side. Locate the convertible top motor in the trunk.Instructions on how to add Mercedes convertible top fluid: Check for compatibility in your owner’s manual. Pentosin CHF 11S Synthetic Fluid is often used without the OEM Mercedes hydraulic fluid. To add hydraulic fluid to your Mercedes-Benz convertible top reservoir, you will need the following: How to add convertible top fluid on a Mercedes-Benz Is it below the minimum mark?Ĭheck for oil leaks at the lift cylinders if it is below the mark. Check the convertible fluid reservoir.You can follow this more in-depth guide on Troubleshooting Convertible Top problems. These switches should be tested for proper operation by checking continuity when the switch is pressed and when it is not. You can unplug the wires going to the micro-switch. Do you know that trunk separator that you are supposed to pull out and engage it in this hook? It is supposed to press this little switch. Next, check the micro switch where the divider locks.Replace the convertible top relay if necessary, PN 0025421319. You can also bridge the top relay for a few seconds to see if the hydraulic pump starts running. Swap it with a known working relay that is identical. Check the convertible top relay as well.If it is blown, replace it with a new fuse with the same ampere rating. Next, check the fuse for the convertible top.If the windows don’t go down, make sure the trunk compartment divider is pulled out.Start by pressing the convertible switch.Frozen or stuck mechanical arms or broken cable.Low fluid in the convertible top reservoir.The Mercedes convertible deck doesn’t move Inspect the trunk area for a hydraulic fluid leak. The switch at the center console is faulty.Mercedes convertible top won’t go down or raise Bow tension cylinder (driver or passenger).Leak at the o-ring at any of the lift cylinders.The binding of mechanical arms can cause it.This can be caused by low fluid levels or air in the hydraulic lines.Mercedes Convertible Top Won’t go up or downĬommon Causes of Mercedes-Benz Convertible Top Problems.If you own a hard-top Mercedes convertible such as the SL-Class and SLK-Class or a soft-top convertible such as the CLK / E -class and are having issues with the convertible top, this article may help you. Take a look at the pictures for the exact location.Owning a convertible Mercedes-Benz is fun and exciting until the convertible top stops working. Fuses 43-63 are located under the hood, near the hood hinge on the driver’s side.Fuses 1 through 20 is located in the trunk.Fuses 21-42 are located at the side of the dash.This applies to all C Class models years 2001-2007. Scroll to the bottom of the list if you are wondering where the fuses are on the C Class. It is a combined list of all the fuses, including pre-facelift up to 2007. Here is the list of fuse designations for the Mercedes-Benz C Class.
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