See also:

Electronic key battery
Replace the battery with a new one if it is depleted.  - You will need the following items: • Flathead screwdriver • Small Phillips-head screwdriver • Lithium battery (CR1632)  - ...

If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted or the electronic key cannot be used because the battery is depleted, the smart access system with push-button start and wire ...

What is not covered
These warranty obligations do not apply to failures or noncompliance caused by: • The use of replacement parts not certified in accordance with aftermarket parts certification regulations. †...