1
- Press the small button on the back of the key fob to release the mechanical key.
- Pull the key out completely.
How to Replace the Key Fob Battery in a 2018 BMW 330i
If your 2018 BMW 330i key fob has stopped working or has a weak signal, the battery is likely dead. Instead of going to a dealership and paying for a replacement, you can easily swap out the battery yourself in just a few minutes.
This guide will walk you through the step-by-step process of opening the key fob, replacing the battery, and reassembling it correctly. The process is simple, requires only a small flathead screwdriver, and will help you restore full key fob functionality.
Инструменты (1)
Запчасти (1)
- CR2450 Lithium Coin Battery купить ↗
Пошаговая инструкция
2
- Insert the mechanical key into the slot and gently twist it to pry open the key fob case.
- Be careful not to use excessive force, as this may damage the plastic casing.
3
- Once the key fob is open, you will see the CR2450 battery inside. Make a note of its positive (+) and negative (-) orientation.
- Carefully remove the old CR2450 battery by lifting it out with a nylon spudger or your fingernail.
- Avoid using sharp metal tools to prevent damage to the battery compartment.
4
- Place the new CR2450 battery in the correct orientation, with the positive (+) side facing up.
- Ensure the battery is properly seated in the battery slot.
- Double-check that the battery is positioned correctly before closing the key fob.
5
- Align the two halves of the key fob and press them firmly together until you hear a click.
- Ensure all edges are securely snapped back into place.
6
- Slide the mechanical key back into the key fob until it locks into place.
- Press the lock/unlock buttons to ensure the key fob is working.
- If the key fob does not respond, recheck the battery installation to ensure it is properly seated.
Завершение
To reassemble your device, follow these instructions in reverse order.
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