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How to Replace the Key Fob Battery in a Cadillac CTS?

Model: Cadillac Cts MK 3 - Years 2014-2019
Part: Key

In this tutorial, you will see how to replace the key fob battery in a Cadillac CTS, a very simple and quick operation. For this, you will need a replacement CR2032 battery and a small flathead screwdriver. Start by extracting the emergency key by pressing the designated button on the bottom, then use the key itself to pry in the indicated slot to unlock and open the rear cover. Once done, remove the old battery with the screwdriver and insert the new one, making sure to respect the polarity.

Updated on 17 May 2026 by ScegliAuto

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