air conditioning Ram 3500 2011 User Guide

•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean, also.
•Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory engine coolant (antifreeze)
performance, poor gas mileage, and increased
emissions.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to “Maintenance Schedule” for further information.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You would not have your full
braking capacity in an emergency.
Brake Fluid Level Check
The fluid level of the master cylinder should be checked
when performing under the hood service or immediately
if the brake system warning lamp indicates system
failure.
7
MAINTAINING YOUR VEHICLE 539

VEHICLE STORAGE
If you are storing your vehicle for more than 21 days, we
recommend that you take the following steps to mini-
mize the drain on your vehicle’s battery:
•Disconnect the Ignition-Off Draw (IOD) fuse located in
the Integrated Power Module, located in the engine
compartment. The IOD cavity includes a snap-in re-
tainer that allows the fuse to be disconnected without
removing it from the fuse block.
•As an alternative to the above steps you may discon-
nect the negative cables from both batteries.
•Any time you store your vehicle or keep it out of
service (i.e., vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This will
ensure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.NOTE:
•When reinstalling the IOD fuse push firmly until fully
seated; the gauges in the instrument cluster will do a
full sweep when the ignition switch is turned to the
RUN position. This is a normal condition.
•When the vehicle is shipped from the factory, the IOD
fuse is in the up or extracted position. If the radio,
interior lamps, keyless entry or other features do not
work with the key OFF, check the position of the fuse
(or check to see if the fuse is blown) to ensure that it is
fully seated. When the IOD fuse is extracted, the
instrument cluster in the odometer window will dis-
playNO FUSE.”
558 MAINTAINING YOUR VEHICLE

Adding Engine Coolant (Antifreeze).......... 535
Adding Fuel........................... 444
Adjustable Pedals....................... 133
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 526
Air Conditioner Maintenance............... 528
Air Conditioning........................ 286
Air Conditioning Controls................. 286
Air Conditioning, Operating Tips............ 297
Air Conditioning Refrigerant.............528,529
Air Conditioning System.............286,290,528
Air Pressure, Tires....................412,418
Airbag..............................54,63
Airbag Deployment....................... 64
Airbag Light.....................62,67,84,220
Airbag Maintenance....................... 66
Airbag, Side..........................61,63
Airbag, Window (Side Curtain)...........57,61,63
Alarm Light........................... 210
Alarm, Panic............................ 24Alarm (Security Alarm).................... 18
Alarm System (Security Alarm)............... 18
Alterations/Modifications, Vehicle............. 7
Antenna, Satellite Radio................... 267
Antifreeze (Engine Coolant)..............535,569
Disposal............................ 537
Anti-Lock Brake System (ABS).............. 390
Anti-Lock Warning Light.................. 221
Anti-Theft Security Alarm (Theft Alarm)........ 18
Anti-Theft System........................ 18
Appearance Care........................ 546
Ashtray............................... 163
Auto Down Power Windows................ 35
Automatic Dimming Mirror................. 94
Automatic Headlights.................... 123
Automatic Temperature Control (ATC)......... 290
Automatic Transmission................... 311
Adding Fluid......................... 544
Fluid and Filter Changes................. 545
602 INDEX