Battery drain, seems to come from defect in seat controller module. see 19 pages of forum: http://www.benzworld.org/forums/w203-c-class/1196568-mercedes-c320-battery-drain-11.html mercedes c240 2001, but many other models and years affected. *tr
Mercedez benz c 240 year 2001 has many defects that required several thousands of dollars . the dealership and the manufacturer did not provide any help.*cw