Honda RDX Owner's Manual page 172

Dual Temperature Control
When you set the temperature to its
lower or upper limit, it is displayed as
or . DRIVER'S SIDE PASSENGER'S SIDE
Push AUTO or . The selected
temperatures appear in the display.
When the indicator in the DUAL
button is off, you can adjust both
sides to the same temperature by
adjusting the driver's side
temperature control buttons ( or
).
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