[m4_betting_u_light]

Originally Posted by afadeev

I finally had a trip to the dealer (for scheduled maintenance), and asked them to check out this cold-start buzzing.

After much research and contacting TSE, dealer identified the root cause as "CD drive in the headunit was faulty". Or at least that's what they wrote up on the repair report.

They replaced the HU part # 65129-325-978, and the buzzing has gone away.

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Thank you kind sir!!!