The Climate Control Display Is Inoperative

The climate control display is inoperative

Probable cause: Communication problem between the climate control unit and the Audio-HVAC subdisplay unit (with navigation) or the Audio-HVAC display unit (without navigation)
Do the audio communication line circuit troubleshooting; with navigation, without navigation Audio Communication Line Circuit Troubleshooting (Without Navigation)

Also check for

Climate control DTCs Initial Inspection and Diagnostic Overview

Also check for

Audio-HVAC subdisplay unit or audio-HVAC display unit failure

Also check for

Poor or loose connections at the terminals