Chrysler 300M 1999 Manual page 750

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1. With ignition on, use the C/T button to select the Compass/Temperature display.
2. Press and hold the RESET button for 5 seconds (but less than 10 seconds). OTIS
displays the last variance zone and the word VAR. All other display segments are off.
3. Use the STEP button to select the proper variance zone number (1-15). Each variance
zone represents a 4-degree shift in magnetic variation from central zone 8, which has
no variation from true north.
4. After selecting the proper variance zone number, press the RESET switch. The new
variance zone is then set and the OTIS will resume normal operation.
If further problems with the compass are encountered, see the appropriate service manual.
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