Module, Radio Receiver: Description: Description
The radio (also known as the radio receiver module) can be identified by sales codes RA3 or RA4. There is one distinct chassis design for all radios. The premium radios (Sales Codes RA3 or RA4) have the electronics mounted parallel to the face plate in an aluminum chassis.
RA3 or RA4 - The RA3 or RA4 radio is identified by a 213.36 mm (8.4 inch) color touch screen display. There are no visible differences between the RA3 and RA4 with the unit turned off. However, on vehicles sold in the United States, the RA4 offers High Definition (HD) radio reception and can be identified by the HD symbol located on the screen when the radio is in radio mode. If the radio will not power up, the only way to identify the system is through a direct Single VIN inquiry using the TechConnect application on the DealerConnect web site.
- 213.36 mm (8.4 inch) color touchscreen display
- AM/FM/Remote Aux/USB/SD receiver
- satellite radio receiver (optional)
- dealer activated factory installed Global Positioning System (GPS) navigation option (RA3 only)
- factory installed GPS navigation (RA4)
- iPod support via USB
- remote steering wheel mounted controls
- Bluetooth ™ connectivity for hands-free phone; streaming audio; voice commands
- climate control integration
- Electronic Vehicle Information Center (EVIC) personalization (optional)
- 3G Wi-Fi hot spot capability (subscription required)
- free form Short Message Service (SMS) dictation (subscription required)
- HD radio receiver (RA4 only)
- 911 - ASSIST automated calling
- remote CD player (optional)
- remote services - door lock/unlock, remote start, panic (subscription required)
The radio contains a microcontroller and programming that allows it to communicate with other electronic modules in the vehicle over the Controller Area Network - Interior High Speed (CAN-IHS) data bus. In vehicles equipped with the RA3 or RA4, the radio also uses electronic message communication with other electronic modules in the vehicle over the CAN-C data bus. Refer to COMMUNICATION, DESCRIPTION .
The radio cannot be adjusted or repaired. If an radio is damaged or ineffective, it must be replaced. The external AM/FM antenna and the external combination antenna can be repaired separately from the radio. The radio software is flash programmable through the USB port.