Start with by clearing your Nexus from the SYNC system. Go to the Phone Menu (press the Phone icon on the steering wheel or dash), then use the tuning knob to select System Setting. Select BT Devices and push OK. Then select Delete Device, then find your Nexus and push OK, push OK again to confirm the delete.
Then go to your phone, to the Bluetooth settings and delete the Sync connection.
Now, go back to your vehicle to the phone menu. It should come back with the message "No Phone Paired" When it prompts, add BT Device, push OK. When it prompts "Push OK:" to begin pairing a device, then push OK, the screen will show a 6-digit PIN. Turn the tuning knob to "Special PIN" then push OK, it will show either a 0000 or a 1234, then start your phone searching for a New Device, when it "finds" Sync, select it and then enter the 4-digit PIN of your choice. It will Pair and then answer its questions (with an OK) when it asks to make it the Favorite Phone and Download Phonebook. Allow three to five minutes to download the phonebook.
The Droid-based phones will not reliably download the phonebook when you use the 6-digit PIN.
If the system does not automatically ask to download the phonebook, then do the following:
Please follow the steps below to send your contacts to SYNC:
1. Press the PHONE button to enter the Phone Menu.
2. Scroll to PHONE SETTINGS and press OK.
3. Scroll to MODIFY PHONEBOOK and press OK.
4. Scroll to DOWNLOAD PHONEBOOK and press OK.
For more information, see my blog at Ford Tech Lane - I have several articles about Droid-based phones
Then go to your phone, to the Bluetooth settings and delete the Sync connection.
Now, go back to your vehicle to the phone menu. It should come back with the message "No Phone Paired" When it prompts, add BT Device, push OK. When it prompts "Push OK:" to begin pairing a device, then push OK, the screen will show a 6-digit PIN. Turn the tuning knob to "Special PIN" then push OK, it will show either a 0000 or a 1234, then start your phone searching for a New Device, when it "finds" Sync, select it and then enter the 4-digit PIN of your choice. It will Pair and then answer its questions (with an OK) when it asks to make it the Favorite Phone and Download Phonebook. Allow three to five minutes to download the phonebook.
The Droid-based phones will not reliably download the phonebook when you use the 6-digit PIN.
If the system does not automatically ask to download the phonebook, then do the following:
Please follow the steps below to send your contacts to SYNC:
1. Press the PHONE button to enter the Phone Menu.
2. Scroll to PHONE SETTINGS and press OK.
3. Scroll to MODIFY PHONEBOOK and press OK.
4. Scroll to DOWNLOAD PHONEBOOK and press OK.
For more information, see my blog at Ford Tech Lane - I have several articles about Droid-based phones