When the battery level is low on your key fob, car will show a sign in the dashboard when you enter the car. and you will feel you need to be closer to the car to unlock the door.

• what you will need:
  • CR2032 Lithium Battery 3V (https://www.amazon.com/AmazonBasics-CR2032-Lithium-Coin-Cell/dp/B0787K2XWZ/ref=sr_1_1_ffob_sspa?crid=2603V33ANOC7B&keywords=cr2032&qid=1694276037&sprefix=cr20%2Caps%2C180&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1)
  • Key fob
  • optional: big flat head screw driver. (the emergency key can be used to replace the screw driver)
  • 
• steps
  • take out the hidden metal key by pushing the small notch near the metal key.
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  • use flat screw driver or the key to open up the cases.
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  • change the battery. and close the case, and you are done!
• it is just easy like this. just 3min!