The electrical connector at the automatic transmission may leak fluid into the wiring harness. If not repaired, the oil will migrate through the wiring harness and damage the transmission control module. At that point, a new harness and control module may be necessary to correct this problem.
Transmission May Leak Fluid and Damage Control Module on Mercedes-Benz SLK320
Average mileage: 105,500 (91,000–120,000)
8 people reported this problem
2001 Mercedes-Benz SLK320 120,000 mi, Visitor
Trans fluid leaking from around electrical connector. $400 to drop pan, replace connector and rubber pan gasket and reinstall and refill with fluid at transmission shop.