![]() ![]() ![]() ![]() I then removed all the fuses on the left hand column (21-31) such that all the fuses were now removed from the cabin fusebox and the current draw dropped to around 0.18A. The current draw measured 0.8A after a few minutes. I then removed fuses 32 to 42 in the right hand column of the cabin fusebox. This time I identified that fuses 21, 37 and 38 controlled the roof so I pulled them (engine off key out) and waited a few mins for the amps to drop. I charged it up and put it back in the car. I parked the car up.ģ days later I came out and the battery was flat again. I drove home the 50 or so miles (no error codes) and the journey was fault free. I don't remember what the fault descriptions on the dash were. W203 OBD2 PINOUT PROThere were now a number of fault descriptions displaying on the dash so my installer hooked up his pro scanner, read the underlying fault codes and reset them. I was happy that the problem was not related to the amp install. After a couple of minutes, the current draw dropped to around 0.18A and stayed there - I'm not sure if this is high for an SLK ? - but we thought it good enough considering the 1.25A draw initially measured. I then asked my installer to lower the roof. We systematically pulled each fuse out of the engine and cabin fuseboxes (not the trunk fusebox) waiting around 2-3 mins. At the weekend, I arranged to return the car and my audio guy measured a 1.25A draw (engine off key out). The car suffered a flat battery twice the following week. I got an amp installed at my pro audio shop and drove home. Sorry for the long post but background maybe important. Note added by dbgrn: Issue now resolved - see post 31 for how: ![]()
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