New Harman Audio Amplifiers – 2017-2019 Subaru

NHTSA ID Number: 10161816

Manufacturer Communication Number: 15-240-19R

Summary

This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressing the following customer concerns:

Symptom 1: No audio output is heard but, the volume level displayed changes when turning the knob

Symptom 2: Audio volume increases to maximum intermittently without turning the knob

Symptom 3: A buzzing, screeching or crackling-type sound is heard coming through the speakers

Symptom 4: Loss of audio output after turning the head unit off and back on again in a short amount of time

Symptom 5: Audio volume is temporarily louder than expected after ending a Bluetooth call while using navigation guidance

Symptom 6: No response from the volume control knob.

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Harman Kardon Audio Amplifier Operational Concerns – 2019 Subaru

NHTSA ID Number: 10163001

Manufacturer Communication Number: 15-235-18R

Summary

This bulletin announces availability of new audio system amplifiers to address the following operating concerns with the Harman Kardon Gen 3 infotainment system:

Symptom 1: No audio output is heard but, the volume level displayed changes when turning the knob

Symptom 2: Audio volume increases to maximum intermittently without turning the knob

NOTE: This condition is generally reported as occurring following a handsfree phone call or while using navigation voice guidance.

Symptom 3: A buzzing, screeching or crackling-type sound is heard coming through the speakers.

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