67• Turn the wireless device off immediately if there is any reasonto suspect that interference is taking place.• Read and follow the directions from the manufacturer of theirimplanted medical device.If you have any questions about using your wireless device withan implanted medical device, consult your health care provider.Hearing aidsSome digital wireless devices may interfere with some hearingaids. If interference occurs, consult your service provider.■ VehiclesRF signals may affect improperly installed or inadequatelyshielded electronic systems in motor vehicles such as electronicfuel injection systems, electronic antiskid (antilock) brakingsystems, electronic speed control systems, and air bag systems.For more information, check with the manufacturer, or itsrepresentative, of your vehicle or any equipment that has beenadded.Only qualified personnel should service the device or install thedevice in a vehicle. Faulty installation or service may bedangerous and may invalidate any warranty that may apply tothe device. Check regularly that all wireless device equipment inyour vehicle is mounted and operating properly. Do not store or