Toyota Avalon cell phone connection issue with no resolution from dealership on Toyota Avalon

Some Toyota Avalon owners report experiencing cell phone connection issues that remain unresolved even after visiting the dealership. These owners have found that disconnecting the negative terminal of the battery for 30 minutes can help reset the communication module and improve connectivity. Additionally, turning off Bluetooth on the phone and connecting via a USB data cable, as well as deleting the Avalon from the phone's Bluetooth settings, may also resolve these issues. If dealership assistance proves ineffective, contacting Toyota Safety Connect's help line at (877) 201-0262 has been recommended for further support. Furthermore, some owners suggest checking if their phone is still detected by the car and ensuring that the toggle switches for phone connectivity are correctly set, as these may have changed unexpectedly.