The recall is for vehicles equipped with manual temperature control. The software for the heating ventilation and air conditioning module may not work, causing the windshield defrosting and defogging functions to fail. This is potentially a big hazard if visibility becomes impaired while driving.
Dealers will reprogram the module for free. Owners may contact Chrysler at 800-853-1403 or the NHTSA Vehicle Safety Hotline at 888-327-4236.