TSB: COMBINED TSB/SERVICE ACTION: K900 (KH) NAVIGATION UNIT SOFTWARE UPGRADE (SA 173) - This bulletin provides the procedure for upgrading the navigation system software of some 2015MY K900 (KH) vehicles, produced from January 2, 2014 through October 15, 2014, to resolve concerns related to ?Application Error? messages on the navigation screen and system reboots after the expiration of Sirius XM® trial period.
