Door locks keep engaging?

2017 CHRYSLER 300
177,000 MILES • MANUAL
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LINDER78
  • MEMBER
  • 3 POSTS
Door locks keep engaging when car is off and on and horn beeps 3 times when u turn car off then back on
Jul 7, 2026 at 2:34 AM
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LINDER78
  • MEMBER
  • 3 POSTS
My battery is good it hasn’t been replaced lately either
Jul 7, 2026 at 2:36 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
The three horn chirps are the biggest clue, that commonly means the Passive Entry system believes a key fob is still inside the vehicle when it is being locked. I would replace the battery inside the key fob first and make sure there is not an extra key inside the car somewhere, check beside and under the front seats. Here is a video that shows how to replace the key fob battery.

https://youtu.be/gfQgamsgPD4?si=eQDggn4sRCTNVA3x

Please let me know what happens.
Jul 7, 2026 at 3:01 PM
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LINDER78
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  • 3 POSTS
I have replaced the key fob battery and I’m going to watch the video right now thank u so much for your response!! I appreciate you!!
Jul 7, 2026 at 5:29 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
You are more than welcome, I am are here to help :)
Jul 7, 2026 at 6:18 PM
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