Mazda 6 Service Manual: No.3 will not crank

No.2 mil illuminates

No.4 hard to start/long crank/erratic start/erratic crank

Other materials:

Mazda 6 Service Manual: To Turn Off an Armed System
An armed system can be turned off using any one of the following methods: Pressing the unlock button on the transmitter. Starting the engine with the push button start. (With the advanced keyless function) Pressing a request switch on the doors. The hazard warning lights will flash twic ...

Mazda 6 Service Manual: Active Driving Display (Some models)
WARNING Always adjust the display brightness and position with the vehicle stopped: Adjusting the display brightness and position while driving the vehicle is dangerous as doing so could distract your attention from the road ahead and lead to an accident. CAUTION Do not try to adjust the ...