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- 1). Go for a drive on the highway in your Accord. Take a decibel meter with you.
- 2). Turn on the decibel meter and record the average dB rating during your trip.
- 3). Visit a local Honda dealer and test drive a brand-new Accord. Take the decibel meter with you on the test drive.
- 4). Repeat the experiment on your test drive. If the dB level in the new Accord is lower than it is in your Accord, your Active Noise Control protection may be failing.
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