RAM Promaster 2014 — technical service bulletin
Bulletin 2400714 · NHTSA communication 10221011 · issued Sep 11, 2014
Technical service bulletin
communication type
Visibility
component
2014
model years
1
vehicle entries
Official summary
Flash: Rear Defrost/Heated Mirror LED on HVAC Control Head Does Not Illuminate This bulletin involves selectively erasing and reprogramming the HVAC Module with new software. Customers may complain that the rear defrost/heated mirror LED indicator on the HVAC controller does not illuminate when the button is depressed.Updating the HVAC software will correct this condition.This issue typically occurs after performing the Proxi Configuration routine in the wiTECH Diagnostic Application. Updating the HVAC software will prevent this issue from occurring again in the future.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.