Mazda 6 Owners Manual: Fog Lights (Some models)
The fog lights can be turned on with the ignition switched ON and the headlights turned on.
Use this switch to turn on the fog lights. The fog lights will improve visibility at night and during foggy conditions.
The fog lights turn on when the fog light switch is turned to the
position and turn off when the switch is turned
to the 
position.
NOTE
The fog lights will turn off when the headlights are set at high beams.
Daytime Running Lights
Some countries require moving vehicles to have their lights on (daytime running
lights) during the daytime. The daytime running lights turn on when the vehicle
is driven and turn off when the park ...
Turn and Lane-Change Signals
The ignition must be switched ON to use the turn and lane-change signals. ...
Other materials:
Mazda 6 Owners Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.)
2. Remove the heater core from the A/C unit.
3. Inspect for cracks, damage, and coolant leakage.
If any problems are found, replace the heater core.
4. Inspect for bent fins.
If any are bent, use a flathead screwdriver to stra ...
Mazda 6 Owners Manual: Theft-deterrent control module inspection
1. Remove the theft-deterrent control module without disconnecting the
connectors.
2. Measure the voltage at the theft-deterrent control module terminals as
indicated below.
3. Disconnect the theft-deterrent control module connector before inspecting
for continuity at terminals L, Q, S, T, a ...