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How to Replace the Key Battery of a Lexus CT

Model: Lexus CT MK 1 - Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Part: Key

Video tutorial

A simple operation that will restore the convenience of remote opening for your vehicle using your key fob. To change the battery, slide the switch located at the top of the key on the chrome side to extract the metal key. This allows you to leverage at the point where the key curves to split it in two and access the circuit where the battery is located.

Replace the battery and retrace the steps in reverse for reassembling the components.


Updated on 27 February 2026 by ScegliAuto


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by ScegliAuto

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