To change the cruising speed

See also:

Cooling fan, hose and connections
Your vehicle employs an electric cooling fan which is thermostatically controlled to operate when the engine coolant reaches a specific temperature. If the radiator cooling fan does not operate ...

Certification for the Handsfree system
FCC WARNING Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE This device complies with Part ...

Automatic climate control system (if equipped)
NOTE Operate the automatic climate control system when the engine is running. ...