External Sound System Fault Indicators

External Sound System

These are External Sound System Fault Indicator symbols. An External Sound System is used and mandated in most electric vehicles (EVs) or hybrid vehicles operating in EV mode to alert pedestrians to the presence of the vehicle.

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These lights, showing curved lines emanating from a car, with or without the word OFF, indicate a problem with system, which must be addressed by your dealer or qualified service center. Variations exist in color (red or yellow/amber/orange) and style. A speaker is shown with the car in most of the images.

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The information on this website is provided for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.

Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.

Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.

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