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With normal use, the key's battery lasts for around a year. A notification appears on the instrument panel when the battery is low. To replace it, follow these steps:
Note: It is recommended to replace the battery in all keys at the same time.
Note: It is suggested to use Panasonic CR2032 batteries, which can be bought through most retail outlets.
Note: Before installing the battery, wipe it clean and prevent contacting the flat surfaces. Fingermarks on the battery's flat sides can shorten its life.
Tesla, Inc. was not involved in the development of this document and did not provide any input or otherwise edit, review or authorize it.