The telephone is a Motorola W385 and the cell phone carrier is Telus Mobility (largest in Canada)
From your symptoms and description of your concern first try turning off your phone, wait a minute, and turn it back on. If this doesn't fix it, you need to take your vehicle to your dealership and and them perform a Technical Service Bulletin which pasted below for you. The technician will first reprogram your Accessory Protocol Interface Module (APIM) for the SYNC system, then pair your phone back to your car and that should correct a variety of issues. If not, they will need to replaced the APIM and reprogram. I have seen this programming issue on a few vehicles and have only replaced a couple of APIM's myself. After you have the TSB performed and if you still have issues it could be with your phone. For SYNC phone help go to http://www.syncmyride.com/ and they will be able to help you. Thank you for your question and I hope these suggestions fix the SYNC for you. If you need anymore help please let me know.
Some 2008-2010 vehicles equipped with SYNC version 2 software level, SYNC 911 Assist and Vehicle Health Report, may exhibit all or most of the following symptoms:
These symptoms may be triggered by a low battery state of charge, or a recent battery disconnect/reconnect.
Follow the service procedure to correct the condition.
This software upgrade only applies to the following Accessory Protocol Interface Module (APIM) Vehicle Interface Processor (VIP) and Customer Interface Processor (CIP) software levels:
To determine the current APIM software level, reference the Professional Technician Society (PTS) website, enter the VIN in OASIS, click the GO button and select the SYNC button.
Eligible Under Provisions Of New Vehicle Limited Warranty CoverageIMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.