How to replace the battery of a car fob (keyless flip remote)

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  • OVERALL DIFFICULTY INDEX: 1/10
  • IF YOU HAVE NO TOOLS YOU PAY $5 TO GET THEM FOR THIS JOB
  • IF YOU HAVE NO EXPERIENCE YOU SPEND 15 MINUTES TO CARRY OUT THIS JOB
  • NO SAFETY ISSUES​
BEFORE YOU START
  • Remote keys need a battery to let you open the doors. Once the battery dies, you can still use your key mechanically but no more as a remote. Eventually your vehicle's alarm (if equipped) will start for not recognizing the key upon opening the driver's door.
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Car remote battery change pictorial (keyless flip remote battery)

Start by removing the ring and finding the place where you should insert a screwdriver for opening the plastic body:
A single screwdriver can however easily damage the body reason why it is recommended to insert a second screw driver and use both simultaneously.
Now gently let the printed circuit fall in your hand, look for the battery, and use a screwdriver if needed to push it out.
​Identify the battery, in this case a CR1620.
Buy a replacement of the same or an equivalent number.
Such batteries are commonly available at shops selling cameras, electrical material, electronics, watches, etc.
Fit the new battery taking care not to let your fingers leave marks on its flat sides, close the body and press firmly until you hear a "click":
That's it! Just try it works well and enjoy your remote keyless system.

See also...

Buy your car fob battery or a button battery tester here: