Originally Posted by copernicium112
Unfortunately I think your only options at this point are fuse pulls (I don't know the fuse #(s) for Sync but someone here does I'm sure), battery disconnect, or a trip to the dealer.
The owner's manual says it's fuse #67 for SYNC, which is in the passenger compartment fuse panel. I would go ahead and pull #79 also, it's for several items including the radio.
Hatch Nation #90
'12 SE Sport 5Dr |╠╬╝|Sterling Grey Metallic|203a|Moonroof|17" Paint/Mach Whls|K&N 57S-4000|FFE RMM|Steeda STB, RSB|JBR bushings
'01 ZX3|╠╬╝|Pitch Black|Prem. pkg.|Moonroof|SVT Snorkel|SVT Springs|S2 Dampers|Steeda STS|Magnaflow exh.