Turn the vehicle key to ACC or IGNITION position. Connect the power cable to the GPS navigation unit if it is a stand-alone unit. Check the fuses in the fuse panel. It’s normally on the driver-side of your car. Replace any blown fuses. Make sure the battery is fully charged if it has a battery.
Some GPS or car manufacturers may charge for a map update.
Press the volume buttons or turn the volume knobs to adjust the volume. Make sure the device is not on mute. Look for a mute button on the device or the touch screen. It may be labeled “Mute” or have an icon that resembles a microphone with a line through it. Touch the button to make sure the device is not on mute. Check the audio settings. Look for the Settings menu on your device. It may be a button on the stereo console or touch screen that says “Settings,” “Options,” “Preferences,” or have an icon that resembles a gear. Tap this button. Look for a “Sound” or “Audio” option in the settings menu and tap it. Check the audio settings. Some devices may allow you to adjust the audio of the voice navigation, alter tones, and the voice language. Make sure all audio features are enabled and turned up. Check your car’s audio system. If your GPS navigation is built-in to your car console, check to see if you are getting sound from the radio or other audio devices. If you are not getting any audio, check to make sure your car speakers are connected to your car console and that the wires aren’t worn or frayed. If your GPS is the only thing that doesn’t have sound, you may need to update your GPS system. If you are still not getting any sound, contact your car dealer or a mechanic for further assistance.
Some GPS units may not go past 40% brightness if they are low on power. Make sure your GPS is plugged in or fully charged. Some GPS units also have daytime mode and nighttime mode. You may be able to adjust these settings in the Display or Color menu in the Settings menu.
To calibrate the touch screen on most Garmin GPS units, press and hold the power button until the device powers off completely or it displays a button that says Turn off on the screen. Tap the button to turn it off. Place your thumb in the upper-left corner of the screen and power on the device. Continue to hold your thumb in the upper-left corner until the device boots up. Then tap the dots using a stylus or your finger. [4] X Research source Some GPS units just take a couple of seconds to respond to the touch screen. If it’s not responding immediately, give it a few seconds.
