2016 Mercedes-Benz SLK-Class Problems: 1 Issues Every Owner Should Know
2016 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 2016 Mercedes-Benz SLK-Class has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues, repair costs range from $250 to $1,500. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 2000-2016 Mercedes-Benz SLK-Class, sLK models can develop electrical problems when water enters the front SAM/fuse box area or related harness connections, often due to clogged drains, cowl leaks, or poor sealing. Moisture can corrode connectors and circuit boards, leading to intermittent lighting faults, no-start conditions, wiper issues, and random warning messages.
Common Symptoms
- Intermittent no-start
- Random warning lights
- Wipers or exterior lights malfunctioning
- Battery drain
- Electrical functions working sporadically
How to Fix
Diagnosis requires checking for water traces in the fuse/SAM area, inspecting drains and cowl seals, and testing power/ground integrity at the affected module. Repair may involve cleaning and drying connectors, repairing corroded wiring, resealing leak points, or replacing the SAM module if internal damage is severe. Typical costs range from $250 for minor wiring cleanup to $1,500 for module replacement and programming.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- TipKeep cowl and body drains clear, especially if the car is parked outside, to prevent water from reaching the SAM area.
- UpgradeOwners often replace aged weather sealing during electrical repairs to stop repeat water intrusion. (Dorman Body Weatherstrip)
- TipAddress battery drain and intermittent electrical faults early before corrosion spreads through connectors.