How do you refill the hydrolic fluid in the roof for SLK 230?

To refill the hydraulic fluid for the roof of an SLK 230, first, locate the hydraulic fluid reservoir, typically found in the trunk or under the rear seat. Use a suitable hydraulic fluid as specified in the owner’s manual, removing the cap to access the reservoir. After adding fluid, ensure it's at the correct level, then securely replace the cap and test the roof operation to ensure proper function. Always check for leaks and consult a professional if you're unsure.