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: Intermittent concern troubleshooting
  Vibration Method 1. If malfunction occurs or becomes worse while driving on a rough road or when engine is vibrating, perform the steps below. Note There are several reasons vehicle or engine vibration could cause an electrical malfunction. Some of the things to check for are: ...

Mazda 6 Service Manual: Rear brake (disc) removal/installation
1. Remove in the order indicated in the table. 2. Install in the reverse order of removal. 3. After installation, depress the pedal several times, rotate the wheel by hand, and verify that the brake does not drag. Disc Pad Installation Note 1. Turn the manual adjustment gear counterclockwi ...