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: Operational Range
The system operates only when the driver is in the vehicle or within operational range while the key is being carried. Starting the Engine NOTE Starting the engine may be possible even if the key is outside of the vehicle and extremely close to a door and window, however, always start the ...

Mazda 6 Service Manual: Remote handle lever removal/installation
4SD 1. To remove the remote wire, remove the trunk side trim. 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. 5HB 1. To remove the remote wire, remove the trunk side upper trim and trunk side trim. 2. Remove in the order indicated in the table. ...