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Entertainment Display High Frequency Sound
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Question
AnonUser
My truck (16 Canyon, trailmax) has had a constant high frequency sound with entertainment display when turned on.
The sound only occurs when the display is on and goes away when selecting "Turn Display Off" in the settings menu. Additionally, the sound goes down significantly when automatic nighttime lights kick on after dark.
Here is a YouTube video showing the issue with a spectrum analyzer showing frequency spike when screen is turned on:
It has been making the sound since we purchased it (used, 3 months old/3k mi). At the time, the dealership salesman said the issue would be covered under warranty. We got that it would be fixed as part of the sale.
After the sale concluded, the service department looked into the issue. Service consultant and salesman both reported that they could hear the sound. However the older certified technician cannot hear it due to age and degraded hearing. Therefore they turned away the service with a "could not replicate". This is despite the fact that others have reported hearing it.
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