Mazda 6 Service Manual: No.2 mil illuminates

No.1 melting of main or other fuses

No.3 will not crank

Other materials:

Mazda 6 Service Manual: Discharge headlight control unit removal/installation
Caution Incorrect servicing of the discharge headlight control unit could result in electrical shock. Before servicing the discharge headlight control unit, always refer to the Discharge headlight service warnings. (See DISCHARGE HEADLIGHT SERVICE WARNINGS) When replacing the discharg ...

Mazda 6 Service Manual: Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS)
The Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) alerts the driver that the vehicle may be deviating from its lane and it provides steering assistance to help the driver stay within the vehicle lanes. The Forward Sensing Camera (FSC) detects the white lines (yellow l ...