Center Stack Lower Vehicle diagnostics have revealed DTC's B10EA & B10E9. If diagnostics lead to HVAC...

Bulletin number

9003823

Component

Electrical system

Summary

Center Stack Lower Vehicle diagnostics have revealed DTC's B10EA & B10E9. If diagnostics lead to HVAC control head replacement, The 2013 part is no longer available. Update to a 2014 HVAC control unit (1TQ77DX9AJ). When using the newer control head, minor circuit modification is required. Follow the steps below; 1. Replace HVAC control with latest 2014 part number. (1TQ77DX9AJ or later version). 2. Replace the 2013 blower power module with a 2014 module (68081871AJ or later version). 3. Remove C229 circuit from Pin 1 of D3827A Blower Control C1 connector. (Pin 1 will no longer have a wire in that cavity). 4. Splice the C229 circuit to blower control circuit C56 in Pin 3 of D3827A connector. 5. Clear Faults and re-test.

Owners of these vehicles have filed 57 complaints in the electrical category.