The following information can be selected by pressing the INFO switch with the ignition switched ON.
If you have any problems with your trip computer, consult an Authorized Mazda Dealer.
Distance-to-empty mode
This mode displays the approximate distance you can travel on the remaining fuel based on the fuel economy.
The distance-to-empty will be calculated and displayed every second.

NOTE
Average fuel economy mode
This mode displays the average fuel economy by calculating the total fuel consumption and the total traveled distance since purchasing the vehicle, reconnecting the battery after disconnection, or resetting the data. The average fuel economy is calculated and displayed every minute.

To clear the data being displayed, press the INFO switch for more than 1.5 seconds.
After pressing the INFO switch, - - - L/100 km (- - - mpg) will be displayed for about 1 minute before the fuel economy is recalculated and displayed.
Current fuel economy mode
This mode displays the current fuel economy by calculating the amount of fuel consumption and the distance traveled.
Current fuel economy will be calculated and displayed every 2 seconds.

When you've slowed to about 5 km/h (3 mph), - - - L/100 km (- - - mpg) will be displayed.
Compass mode
The direction the vehicle is moving is displayed in one of the eight cardinal directions while the vehicle is being driven.

Cruise Control Set Vehicle Speed Display (Without Multiinformation Display)
Multi-Information Display and INFO Switch (Some models)Mazda 6 Owners Manual: Cargo compartment light switch inspection
1. Remove the liftgate lower trim. (See LIFTGATE LOWER TRIM
REMOVAL/INSTALLATION)
2. Disconnect the cargo compartment light switch connector.
3. Inspect for continuity between the cargo compartment light switch
terminals using an ohmmeter.
If not as specified, replace the liftgate lock.
...
Mazda 6 Owners Manual: Side air bag sensor removal/installation
Warning
Handling the side air bag sensor improperly can accidentally
deploy the side air bag module, which may seriously injure you. Read AIR BAG
SYSTEM SERVICE WARNINGS before handling the side air bag sensor. (See
SERVICE WARNINGS.)
1. Turn the ignition switch to LOCK position.
2. ...