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How to Replace the Key Battery in an Acura TLX

Model: Acura Tlx MK 5 - Years 2015-2020
Part: Key

If the key for your Acura TLX suddenly stops working, you may be facing a dead battery that needs replacement. Here’s how to perform this operation. First, use a Phillips screwdriver to remove the small screw located in the center bottom of the cover. Once done, take off the cover and open the battery compartment with a flathead screwdriver. At this point, simply replace the old battery with a new one, ensuring compatibility. Reassemble the cover, screw the screw back in, and you're done.

Updated on 21 May 2026 by ScegliAuto

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