2012 Mercedes-Benz SLK/SLC Problems: 1 Issues Every Owner Should Know
2012 model year · 890+ owner reports · Updated April 2026
According to Au7o's analysis of 890+ owner reports, the 2012 Mercedes-Benz SLK/SLC has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Vario Roof Retractable Hardtop Hydraulic Leak with 890 owner reports. Across all issues, repair costs range from $500 to $2,500. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 2005-2020 Mercedes-Benz SLK/SLC, the Vario Roof retractable hardtop on both R171 and R172 SLK/SLC models develops hydraulic leaks at the cylinders, lines, and pump. The most common leak points are the roof lock cylinders and the main lift cylinders. Leaking hydraulic fluid drips into the trunk area and can damage interior trim and the spare tire well.
Common Symptoms
- Top stops mid-operation
- Hydraulic fluid in trunk well
- Roof warning light on dashboard
- Slow roof operation
- Pump running but roof not moving
How to Fix
Identify and replace the leaking hydraulic cylinder or hose. Top off with the correct hydraulic fluid (CHF 11S). The hydraulic pump is located in the trunk — inspect it for leaks as well. Aftermarket hydraulic cylinder rebuild kits are available and significantly cheaper than OEM replacement.
What Owners Are Using
Parts and tips from 890+ owners who fixed this issue
- TipCheck the hydraulic fluid level in the trunk reservoir monthly. Catching a leak early prevents damage to the trunk lining and keeps the pump from running dry.