2032 Battery you need - https://amzn.to/2Nnunjc

Here is a quick little video on how to change your battery on your 2020 Hyundai Sonata DIGITAL KEY Smart Remote. The 2020 Sonata is the first Hyundai model to include Hyundai Digital Key. It allowes your car to be unlocked, locked, started and driven with a smartphone. The system also allowes the primary user to share Digital Key access with 3 other users. Hope this was helpful!

Hyundai Remote Part Number: 95440-L1060, 95440L1060
FCC ID: TQ8-F08-4F27, TQ8-FO8-4F27, TQ8F084F27
Frequency: 433 MHz
Battery: CR2032
Emergency insert key: 81996-M5000, 81996M5000
Reusable: No
On Board Programming: No
5 Buttons: Lock, Unlock, Trunk release, Remote engine start, Panic alarm
This remote fits:
20 21 Hyundai Sonata with push to start, proxy system