Toyota Corolla: Maintenance and care / Do-it-yourself maintenance

Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system...

Do-it-yourself service precautions

If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. Maintenance WARNING The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energized...

Other information:

Toyota Corolla 2019-2026 Owners Manual: Checking the engine coolant

The coolant level is satisfactory if it is between the “FULL” and “LOW” lines (type A) or “MAX” and “MIN” lines (type B) on the reservoir when the engine is cold. ► Type A A - Reservoir cap B - “FULL” line C - “LOW” line If the level is on or below the “LOW” line, add coolant up to the “FULL” line...

Toyota Corolla 2019-2026 Owners Manual: System components

A - Meter control switches Turning the Blind Spot Monitor on/off. B - Outside rear view mirror indicators When a vehicle is detected in a blind spot of the outside rear view mirrors or approaching rapidly from behind into a blind spot, the outside rear view mirror indicator on the detected side will illuminate...