Buzzing Noise when Using an Aux Cable with a Garmin Automotive Device

Important: The Garmin Speak App has been replaced by the Garmin Drive App. To continue using the Garmin Speak along with more enhanced benefits, please visit the App Store (iOS) or Google Play Store (Android) to download the Garmin Drive App.

Ground loop noise (buzzing) may occur in the Aux output when used with a compatible Garmin power adapter. This is dependent on the vehicle, and can range from no noise to very noisy. Turning up the phone volume will reduce the buzzing noise.

An in-line ground loop noise isolator can be purchased separately from many online retailers that will eliminate the buzzing noise.