How do you safely replace an LR44 or CR2032 battery in your car key?
Replacing a battery in your car key may seem like a simple task, but if you are not careful, you could damage the delicate electronics inside the key. In this guide, we will discuss step by step how to safely replace an LR44 or CR2032 battery in your car key, without endangering the internal electronics.
Step 1: Preparation
Before you start, make sure you have all the necessary materials to hand:
- A new battery, depending on the type your car key uses, such as an LR44 battery or CR2032 battery.
- A small screwdriver (such as a watchmaker’s screwdriver).
- A soft cloth to avoid scratching the key.
- Possibly a plastic tool (such as an old bank card) to gently open the key without damaging the housing.
Step 2: Open the key carefully
Many car keys have a small slot or screw that allows you to open the key. It is important to proceed carefully so as not to damage the housing. For this, use the plastic tool or screwdriver.
Some spanners require you to unscrew the screw, while others simply snap off the housing. Make sure you do this on a flat surface so that parts such as buttons or the casing don’t get lost.
Step 3: Remove the old battery
Once you have opened the key, you will see the battery sitting there. Often it is a button cell battery such as an LR44 or CR2032. Use your fingertips or a plastic tool to pry the battery out. Avoid metal tools to avoid short circuits, especially if you accidentally come into contact with the metal parts of the key.
Pay close attention to the placement of the battery before removing it. The position of the plus and minus sides is important for the key to function correctly.
Step 4: Insert the new battery
Take the new LR44 battery or CR2032 battery and carefully insert it in the same direction as the old battery. Make sure the plus and minus sides are inserted correctly, otherwise the key will not work.
Make sure to touch the battery only on the sides, as oil and dirt from your fingers can contaminate the contacts and thus shorten battery life.
Step 5: Close the key and test
Once the new battery is in place, gently push the car key housing back together. If there are screws, tighten them without using too much force so you don’t damage the casing.
Now test the car key by pressing the buttons. Check that the lights on the key are on and that the car unlocks remotely. Does everything work properly? Then you have successfully replaced the battery!
Tips to prevent damage
- Be careful with the electronics: Car keys contain sensitive electronics that you can easily damage by being careless. Make sure not to touch or bend the circuit board.
- Use the right tools: Metal tools can short-circuit if you accidentally make contact with the wrong parts. Therefore, choose plastic tools instead.
- Work on a clean surface: Small parts can quickly get lost. Work on a clean, flat surface and keep all parts together.
With this guide, you can easily and safely replace your car key’s battery without damaging the electronics.
