1. Disconnect the negative battery cable.
2. Turn the seaming welt and weatherstrip over.
3. Remove the sunroof seaming welt. (vehicles with sunroof only)
4. Remove the A-pillar trims.
5. Remove the B-pillar upper trims.
6. Remove the C-pillar trims.
7. Remove the front and rear map light. (See FRONT MAP LIGHT REMOVAL/INSTALLATION.) (See REAR MAP LIGHT REMOVAL/INSTALLATION.)
8. Remove the sunvisors.
9. Remove the assist handle.
10. Disconnect the roof harness connector, remove the clip, and remove the connector.
11. Remove the fasteners.
12. Disconnect the front and rear drain hose.
13. Disconnect the rear washer hose (5HB).
14. Remove the hook holding the roof panel and remove the headliner.

15. Take the headliner off from the passenger-side door opening.
16. Install in the reverse order of removal.
Headliner
Shock absorbing pad removal/installationMazda 6 Service Manual: Vehicle speedometer sensor (vss) inspection
Visual Inspection
1. Remove the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS)
REMOVAL/INSTALLATION.)
2. Make sure that the sensor is free of any metallic shavings or particles.
If any are found on the sensor, clean them off.
3. Install the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS)
REMOVAL ...
Mazda 6 Service Manual: Power Steering
Power steering is only operable when the engine is running. If the engine
is off or if the power steering system is inoperable, you can still steer, but
it requires more physical effort. If the steering feels stiffer than usual
during normal driving or the steering vibrates, consult an A ...