CT-1055/CT-1050 Cellular Telephone (170-1007/1021) Troubleshooting Faxback Doc. # 8862 Telephone will not turn on: -Does the vehicle battery, and transportable battery, have sufficient charge? 1. Telephone turns on but no service: -Is there a good signal? -Is the antenna connected properly? 2. Telephone in service, but will not make calls: -Have you dialed a valid number? -Is the call restriction function set for memory calls only? Q: Cell phone turning off car engine. A: Interference with a car is a known problem with cell phones in general. In order to rectify this interference, reposition the phone, try low-power operation, or use an external antenna, and/or unplug from the cigarette lighter when transmitting/receiving, as it may be feeding back through the DC line.