Owner's Manual (pdf)
Page 95
...Call the displayed number for subscription. "Antenna Error" : Something is wrong with the antenna. ➡ Check the connection of the antenna. "Navigation Error. Please turn on power again later." : The communication error has occurred due to severely cold temperature. ➡ Turn on power again... after warming your car interior. "Off Air" : The broadcast of the XM Tuner. "Updating Firmware" : Updating the firmware of the SIRIUS Tuner Box. "Check SIRIUS" : The unit cannot recognize the connected SIRIUS Tuner Box. ➡ Check the connection ...
...Call the displayed number for subscription. "Antenna Error" : Something is wrong with the antenna. ➡ Check the connection of the antenna. "Navigation Error. Please turn on power again later." : The communication error has occurred due to severely cold temperature. ➡ Turn on power again... after warming your car interior. "Off Air" : The broadcast of the XM Tuner. "Updating Firmware" : Updating the firmware of the SIRIUS Tuner Box. "Check SIRIUS" : The unit cannot recognize the connected SIRIUS Tuner Box. ➡ Check the connection ...