Most Common
Smart Key Fob
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Replacement Steps for Smart Key Fob
Take out the emergency key Press or slide the release on the Lexus ES350 smart key fob and pull the metal key blade out. The slot it leaves is your way into the case.
Open the case Separate the two halves at the seam, working slowly around the edge.
Mind the circuit board The circuit board can come loose once the case is open. Hold it by its edges and keep fingers off the contacts.
Take out the old battery Note which way the CR1632 faces, then lift it out with a fingernail or a small screwdriver tip.
Fit the new battery Put the new CR1632 in with the positive (+) side facing up, and press it flat into its holder.
Check the rubber pad Make sure the rubber button pad or seal sits flat before closing, or the buttons may stick.
Close it up and test Line up the halves and press until they click, slide the emergency key back in, then try lock and unlock from a few feet away.