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How to Replace the Key Battery of the Subaru Ascent

Model: Subaru Ascent MK 1 - Years: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Part: Key

Video tutorial

If you need to replace the battery of your vehicle's key, follow these instructions and refer to the video tutorial. First, get a small screwdriver and insert it into the joint space between the key cover and the base to pry it open.

Once the cover is removed, there is a compartment on the side of the block that contains the buttons. Gently pry with the screwdriver on the two clips on the side to open it. Remove the battery compartment and replace it with an equivalent CR 2016 model.

Then, place the new battery in the compartment and reinsert it into the remote. Finally, reattach the key cover, and you're done.


Updated on 22 May 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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