Attention: This bulletin applies to vehicles sold in the U.S. and Canada only.
Supercede: This bulletin is being revised to add information to step #3 of both procedures (in italics). Please discard Corporate Bulletin Number 08-08-44-013 (Section 08 - Body and Accessories).
Condition: Some customers may comment of any of the following conditions:
^ The Navigation Radio display intermittently goes blank or turns black/off after switching video sources. This most commonly occurs when the shift lever is transitioned from PARK to REVERSE to DRIVE (or vice versa). Other possibilities include switching to DVD movie or Rear AUX (if equipped).
^ The Navigation Radio screen may intermittently freeze, lock up or display "MAP DVD Read Error" messages.
^ Some features may not be accessible while driving. This includes scrolling lists, address book and navigation related entries (i.e. entering a destination).
^ The Navigation Radio, upon start-up, will continue to display the vehicle logo repeatedly. This condition occurs when the vehicle language has been changed, using the Driver Information Center (DIC), in the previous ignition cycle.
Cause: These conditions may be caused by software anomalies.
Navigation Radio Software Update For All Other Vehicles
1. Start the engine, with the gear shift in PARK, wait until the audio or navigation screen is displayed after the opening screen (you may have the press the OK button on the Caution screen).
2. Proceed to the FM audio screen and confirm the current navigation software version by pressing the MENU and SEEK UP (1) buttons simultaneously. If the screen switches, select FM to display the software version. Performing this operation may take a couple of attempts for the radio to detect the simultaneous button press. Refer to the illustration above, which shows the two buttons that need to be pressed. The navigation software version is the first four characters, reading from the left, located in the middle of the screen.
3. If the navigation software version is 101B or 100F, the radio has the latest navigation software available and no update is necessary. However, if the string of letters across the screen are NON-ASCII letters, this indicates an internal communication problem with the RADIO. Refer to the Diagnostic Starting Point-Cellular, Entertainment, and Navigation procedure to begin the diagnosis of the customer concern. For all other navigation software versions proceed to step four to continue the software update.