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.
The brakes will continue to work even when the brake booster completely stops functioning. If this happens, however, you will have to depress the pedal much harder than normal and the braking distance will increase.
See also:
Using your Owner’s Manual
Before you operate your vehicle, carefully read this manual. To protect yourself and extend the service life of your vehicle, follow the instructions in this manual.
Failure to observe these instruct ...
Flat tires
If you have a flat tire while driving, never brake suddenly; keep driving straight
ahead while gradually reducing speed. Then slowly pull off the road to a safe place. ...
Brake pad and lining
While maintaining a speed of 30 to 40 mph (50 to 65 km/h), step on the brake
pedal lightly. Repeat this five or more times. ...