Take the appropriate action and verify that the warning light turns off.

Taking Action
Message Indicated on DisplayMazda 6 Owners Manual: Technical data
ENGINE
LUBRICATION SYSTEM
Note
The maintenance intervals on scheduled maintenance table (See
SCHEDULED MAINTENANCE TABLE) can only be supported by the use of following
oils.
Recommended engine oil
COOLING SYSTEM
FUEL AND EMISSION CONTROL SYSTEMS
ENGINE ELECTRICAL SYSTEM
...
Mazda 6 Owners Manual: Front fender panel
FRONT FENDER PANEL REMOVAL/INSTALLATION
1. Disconnect the negative battery cable.
2. Remove the front side turn light.
3. Remove the fender molding. (See COWL GRILLE REMOVAL/INSTALLATION.)
4. Remove the front bumper. (See FRONT BUMPER REMOVAL/INSTALLATION.)
5. Remove the front combination light ...