A low level of electrolyte fluid will cause the battery to discharge quickly.

Inspect the electrolyte level at least once a week. If it is low, remove the caps and add enough distilled water to bring the level between the upper and lower level (illustration).
Do not overfill.
Examine the specific gravity of the electrolyte with a hydrometer, especially during cold weather. If it is low, recharge the battery.
Battery Maintenance
Battery RechargingMazda 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 t ...
Mazda 6 Owners Manual: Joint shaft disassembly/assembly
1. Disassemble in the order indicated in the table.
2. Assemble in the reverse order of disassembly.
Joint Shaft Disassembly Note
Disassemble the joint shaft.
Bearing Disassembly Note
Remove the bearing using the SSTs.
Dust Seal (Right) Assembly Note
1. Apply grease to the new dust se ...