See also:

To resume cruising speed at more than approximately 25 mph (40 km/h)
If any method other than the CRUISE ONOFF switch was used to cancel cruising speed and the system is still activated, the most recent set speed will automatically resume when the RES/+ switch is ...

Spark Plugs
Make sure to install new spark plugs of the correct heat range. ...

Horn
Press the pad on the steering wheel to sound the horn. ...