See also:

To increase the speed (by the “RES/ SET” switch)
Press the “RES/SET” switch to the “RES” side and hold it until the vehicle reaches the desired speed. Then, release the switch. The vehicle speed at that moment will be memorized and treated as ...

To decrease the speed (by the “RES/SET” switch)
Press the “RES/SET” switch to the “SET” side and hold it until the vehicle reaches the desired speed. Then, release the switch. The vehicle speed at that moment will be memorized and treated as ...

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. ...