IrvesBMW Posted January 4 Share Posted January 4 My F11 displays a daytime running light issue on the dashboard, however all lights function properly. The prior owner said that the problem began when he replaced the headlight bulb. I have removed the headlight module and cleaned the connections, but the error persists. All lights are functioning properly. I prefer not to change a module until necessary; may the headlight bulb replacement be the source of this issue? Quote Link to comment Share on other sites More sharing options...
dave783 Posted January 4 Share Posted January 4 The bulb in the Daytime Running Light may be faulty. Some are not compatible with can-bus and will display an error. Quote Link to comment Share on other sites More sharing options...
Motoman Posted January 4 Share Posted January 4 If the daytime running lights function correctly but the error notice persists, the daytime running light detecting circuit may be malfunctioning. Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted January 4 Author Share Posted January 4 Are you aware of any solutions for this issue, considering that both components function correctly? Would changing the module be beneficial? Quote Link to comment Share on other sites More sharing options...
MrGreedy Posted January 4 Share Posted January 4 Examine the module for indications of corrosion, since it is a prevalent f1x problem. Access it via the inspection panel located in the wheel arch liner. A few T20 screws and remove the sliding module. Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted January 4 Author Share Posted January 4 Indeed, rusting was present. Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted January 4 Author Share Posted January 4 Indeed, there was some dampness. The previous owner removed the headlamp bulb and neglected to reattach the headlight cover. Since I replaced the cover, the headlight is now dry, and there is some rust on the module pins, which I cleaned with isopropyl alcohol before reassembling. Does this module execute the DRL? Both Daytime Running Lights are functioning effectively; nonetheless, the persistent fault indicator on the dashboard remains bothersome. I can just change it but prefer not to purchase one without guidance. Does it need coding for the 2012 520d M Sport? Additionally, any recommendations on purchasing the module with two T20 screws and a black gasket, rather than the red variant with three screws, would be appreciated. Quote Link to comment Share on other sites More sharing options...
MrGreedy Posted January 4 Share Posted January 4 My previous F11 had the same issue; I successfully removed the rust and addressed the moisture infiltration, resulting in the problem being resolved. If not, you are considering a replacement module. Quote Link to comment Share on other sites More sharing options...
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