Recirculation Control
When outside air contains smoke, odors, or
high humidity, or if rapid cooling is desired,
you may wish to recirculate interior air by
pressing the RECIRCULATION control button.
Recirculation mode should only be used temporarily. The
recirculation LED will illuminate on the blower control
knob when this button is selected. Push the button a
second time to turn off the Recirculation mode LED and
allow outside air into the vehicle.
NOTE:
In cold weather, use of Recirculation mode may
lead to excessive window fogging. The Recirculation
mode is not allowed in the Floor/Defrost Mix and
Defrost modes to improve window clearing operation.
Recirculation will be disabled automatically if these
modes are selected.
Summer Operation
The engine cooling system in air conditioned vehicles
must be protected with a high-quality antifreeze coolant
to provide proper corrosion protection and to protect
against engine overheating. A solution of 50% ethylene
glycol antifreeze coolant and 50% water is recommended.
Refer to “Maintenance Procedures” in “Maintaining Your
Vehicle” for proper coolant selection.
Winter Operation
To ensure the best possible heater and defroster perfor-
mance, make sure the engine cooling system is function-
ing properly and the proper amount, type, and concen-
tration of coolant is used. Refer to “Maintenance
Procedures” in “Maintaining Your Vehicle” for proper
coolant selection. Use of the air Recirculation mode
during Winter months is not recommended because it
may cause window fogging.
272
UNDERSTANDING YOUR INSTRUMENT PANEL
Summary of Contents for 2012 Truck Chassis cab
Page 1: ...R a m T r u c k O W N E R S M A N U A L 2 0 1 2 C H A S S I S C A B...
Page 4: ......
Page 7: ...INTRODUCTION 5...
Page 10: ......
Page 121: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 119...
Page 122: ...120 UNDERSTANDING THE FEATURES OF YOUR VEHICLE...
Page 123: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 121...
Page 184: ......
Page 190: ...INSTRUMENT CLUSTER BASE 188 UNDERSTANDING YOUR INSTRUMENT PANEL...
Page 191: ...INSTRUMENT CLUSTER PREMIUM 4 UNDERSTANDING YOUR INSTRUMENT PANEL 189...
Page 276: ...Operating Tips 274 UNDERSTANDING YOUR INSTRUMENT PANEL...
Page 325: ...STARTING AND OPERATING 323...
Page 330: ...4500 5500 Tire Inflation 328 STARTING AND OPERATING...
Page 380: ......
Page 458: ......
Page 476: ......
Page 487: ...INDEX 10...
Page 506: ...Chrysler Group LLC 12DD43 126 AB 2nd Edition Printed in U S A...