door locks give 3 locks sound all together?

2015 HYUNDAI SONATA
108,000 MILES • AUTOMATIC
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BHAMDOC1
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Whenever i start the car turb it off take key out then open the door all door locks give 3 locks sound all together. No codes related at all. How am i supposed to know which is bad
Sep 10, 2026 at 10:37 AM
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STEVE W.
  • Experienced Mechanic
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Look it over close, that is a common reaction from the locks if there is a key or remote hiding inside the car to keep you from locking the keys inside. Or hook a scan tool to it and look in the BCM data and see if it shows the lock status. That might point you at something.
Sep 10, 2026 at 3:24 PM
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BHAMDOC1
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Hmm, the car only has a key, didn't see a remote, so possible. I looked to see if there are any codes to anything, but there is none
Sep 10, 2026 at 3:25 PM
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STEVE W.
  • Experienced Mechanic
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If it's a transponder key check under the dash for anything like a remote start, I've seen people add those and then glue a key near the switch so they don't need to add other items. A 15 is likely to have a remote as well, auction car or ?
Sep 10, 2026 at 5:23 PM
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BHAMDOC1
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Auction car ya. So its not possible that the actuator on driver side is acting up and hence why all respond with the same move lock unlocl?
Sep 10, 2026 at 6:00 PM
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BHAMDOC1
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It's just a key blade similar to valet keys. Many hyundai cars come with just those cause they break or get damaged easily so only the key is left
Sep 10, 2026 at 6:03 PM
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