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: Power outlet

The power outlet can be used for 12 V accessories that run on less than 10 A. Lift the lid while pulling up the knob and open the power outlet lid. ■ The power outlet can be used when The engine switch is in ACC or ON. ■ When turning the engine switch off Disconnect electrical devices with charging functions, such as mobile battery packs...

Toyota Corolla 2019-2026 Owners Manual: Checking and adding the engine oil

With the engine at operating temperature and turned off, check the oil level on the dipstick. ■ Checking the engine oil 1 Park the vehicle on level ground. After warming up the engine and turning it off, wait more than 5 minutes for the oil to drain back into the bottom of the engine...