See also:

Brake booster
The brake booster uses engine manifold vacuum to assist braking force. Do not turn off the engine while driving because that will turn off the brake booster, resulting in poor braking power. ...

Checking the fluid level
The automatic transmission fluid expands largely as its temperature rises; the fluid level differs according to fluid temperature. Therefore, there are two different scales for checking the level ...

If the passenger’s frontal airbag OFF indicator illuminates and the ON indicator turns off even when the front passenger’s seat is occupied by an adult
This can be caused by the adult incorrectly sitting in the front passenger’s seat. Turn the ignition switch to the “LOCK” position. Ask the front passenger to set the seatback to the upright position ...