RA4 RG4 RJ4 Radio Enhancement
This bulletin involves updating the radios software.
The customer may experience, poor or no audio from the radio, also radio controls may
not respond. On further inspection the technician may find DTC B223B-00 Vehicle
Configuration Mismatch.
The option to enable/disable the Auto Park Brake is missing in the radio. This symptom is
for Trailhawk vehicles in the Canadian market.
