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: Sas unit removal/installation
Warning Handling the SAS unit improperly can accidentally deploy the air bag modules and pre-tensioner seat belt, which may seriously injure you. Read AIR BAG SYSTEM SERVICE WARNINGS before handling the SAS unit. (See SERVICE WARNINGS.) Caution When replacing the SAS unit, config ...

Mazda 6 Service Manual: System Operation
Make sure that the Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) OFF indicator light in the instrument cluster is turned off. When the Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) OFF indicator light is turned on, press the switch and make ...