Mazda 6 Service Manual: No.4 hard to start/long crank/erratic start/erratic crank

No.3 will not crank

No.5 engine stalls-after start/at idle

Other materials:

Mazda 6 Service Manual: Traffic Sign Recognition System (TSR) (Some models)
The Traffic Sign Recognition System (TSR) helps prevent the driver from overlooking traffic signs, and provides support for safer driving by displaying traffic signs on the active driving display which are recognized by the Forward Sensing Camera (FSC) or recorded in the navigation system whil ...

Mazda 6 Service Manual: Automatic Transaxle Controls
Various Lockouts: Indicates that you must depress the brake pedal and hold in the lock-release button to shift (The ignition must be switched ON). Indicates the shift lever can be shifted freely into any position. Indicates that you must hold in the lock-release button to shift. N ...