Compass Variance
is the difference between magnetic
North and geographic North. In some areas of the
country, the difference between magnetic and geographic
North is great enough to cause the compass to give false
readings. If this occurs, the compass variance must be set
according to the Compass Variance Map.
NOTE:
The default for the compass variance is Zone 8.
To set the variance: Turn the ignition ON and set the
display to “Compass/Temperature.” Press and hold the
RESET button approximately five seconds. The last vari-
ance zone number will be displayed. Press the STEP
button to select the new variance zone and press the
RESET button to resume normal operation.
Outside Temperature
Because the ambient temperature sensor is located un-
derhood, engine temperature can influence the displayed
temperature. Therefore, temperature readings are slowly
updated when the vehicle speed is below 20 mph
(30 km/h) or during stop-and-go driving.
Compass Variance Map
UNDERSTANDING THE FEATURES OF YOUR VEHICLE
143
3
Summary of Contents for 2009 Ram Chassis Cab
Page 1: ...R A M T R U C K C H A S S I S C A B OWNER S MANUAL 2009...
Page 4: ......
Page 7: ...INTRODUCTION 5 1...
Page 10: ......
Page 78: ......
Page 111: ...UNDERSTANDING THE FEATURES OF YOUR VEHICLE 109 3...
Page 112: ...110 UNDERSTANDING THE FEATURES OF YOUR VEHICLE...
Page 113: ...UNDERSTANDING THE FEATURES OF YOUR VEHICLE 111 3...
Page 163: ...INSTRUMENT CLUSTER UNDERSTANDING YOUR INSTRUMENT PANEL 161 4...
Page 218: ...Operating Tips Chart 216 UNDERSTANDING YOUR INSTRUMENT PANEL...
Page 267: ...STARTING AND OPERATING 265 5...
Page 272: ...4500 5500 Tire Inflation 270 STARTING AND OPERATING...
Page 314: ......
Page 378: ...3 Pull the bulb straight from its socket and replace 376 MAINTAINING YOUR VEHICLE...
Page 382: ......
Page 411: ...INDEX 10...
Page 429: ...Chrysler LLC 81 326 0926 First Edition Printed in U S A...