2021-2022-2023 Toyota Sienna Key Fob Battery Replacement Guide (CR2450)
If your 2021, 2022, or 2023 Toyota Sienna Limited Platinum key fob is acting up—minimal range, especially in the cold, or needing to hold it super close to the ignition button—it’s likely time for a battery swap. Here’s a straightforward guide to get your key fob back in top shape. TL;DR: Replace your 2021 Toyota Sienna Limited Platinum key fob battery with a CR2450 battery to restore optimal performance. This is the battery that I used and it is working