See also:

Engine cooling system
The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once ...

Interior Features
Test drivers say the Rio and Rio5 have easy-to-read gauges and generally like the layout of the dash, but the praise ends there. The Rio’s barebones interior comes with a four-speaker audio syst ...

Automatic climate control system
Front climate control 3rd row air conditioning control (if equipped) 1. A/C display 2. Driver's temperature control knob 3. AUTO (automatic control) button 4. Front blower OFF button 5. Fron ...