TL V6-3.2L (2004)
4. The driver's temperature and passenger's temperature indicators will display a code. Check the code in the list above. If the code is considered OK,
then the center panel module's communication circuit is OK. If the code is considered a fault, replace the center panel module.
If the display module control unit fails to complete any of the functions of the self-diagnostic function, go to the display module control unit input test.
Exiting the Self-diagnostic Function
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Press and hold the "Passenger's AUTO" button for 3 seconds
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Turn the ignition switch OFF.