Garmin nuvi 154LMT - Manual (Page 10)

4 nüvi 140/150 Series Owner’s Manual
NOTE: If you hold the Power key for less
than 3 seconds, the device enters sleep
mode ( page 4 ).
2 Select Off.
Resetting the Device
You can reset your device if it stops functioning.
Hold the Power key for 10 seconds.
About Sleep Mode
Use sleep mode to conserve battery power
when your device is not in use. Sleep mode
uses very little power, and a battery charge lasts
for weeks when your device is in sleep mode.
Entering Sleep Mode
Press the Power key.
Exiting Sleep Mode
While the device is in sleep mode, Press the
Power key.
Adjusting the Screen Brightness
1 Select Settings > Display > Brightness.
2 Use the slider bar to adjust the brightness.
Adjusting the Volume
1 Select Volume.
2 Select an option:
• Use the slider bar to adjust the volume.
• Select to mute the device.
• Select > Audio Mixer and use the
slider bars to adjust the volume for
navigation prompts, phone, and media.