F11 2012 2.0 Diesel Msport daytime running light malfunction

[IrvesBMW]

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?

[dave783]

The bulb in the Daytime Running Light may be faulty.
Some are not compatible with can-bus and will display an error.

[Motoman]

If the daytime running lights function correctly but the error notice persists, the daytime running light detecting circuit may be malfunctioning.

[IrvesBMW]

Are you aware of any solutions for this issue, considering that both components function correctly? Would changing the module be beneficial?

[MrGreedy]

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.

[IrvesBMW]

Indeed, rusting was present.

[IrvesBMW]

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.

[MrGreedy]

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.