How to Replace a Battery in a Car Key Fob

Introduction

Replacing the battery in your car key fob can seem daunting, but it’s actually quite simple. In this guide, I’ll walk you through the steps to replace the battery in various types of key fobs. Whether you have a modern key fob or an older one, this guide will help you get your key fob working again.

Understanding Your Key Fob

Most modern key fobs have a replaceable battery. These batteries are usually non-rechargeable watch batteries. The first step in replacing the battery is to remove the valet key, if your fob has one. This will give you access to the battery compartment.

Tools You’ll Need

The primary tool you’ll need is a flathead screwdriver. This tool is essential for prying open the battery compartment. In some cases, you might also need a small knife to score around the edges of the key fob.

Step-by-Step Battery Replacement

Let’s go through the steps to replace the battery in different types of key fobs.

Ford F-150 Key Fob

For the Ford F-150 key fob, start by removing the valet key. You’ll see a hole where you can insert a flathead screwdriver. Use the screwdriver to pop the back cover off. Inside, you’ll find a CR2450 battery. Remove the old battery and replace it with a new one. Pop the cover back on, and you’re done.

Energizer Lithium Coin Blister Pack Watch/Electronic Batteries, 1 Count (Pack of 2)
  • Pack of 2 batteries
  • Lithium coin batteries for watches and electronic devices
  • Has a power of 3 volts

Another Ford Key Fob

This key fob also has a valet key that you need to remove. Look for an indentation near the base where the key flips out. Use the flathead screwdriver to pry the cover off. This key fob uses a CR2032 battery. Replace the battery and snap the cover back on.

Amazon Basics 4-Pack CR2032 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free
  • Plastic, Metal
  • Imported
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032

Older BMW Key Fob

For an older BMW key fob, remove the valet key to reveal an outline that looks like a battery. Insert the flathead screwdriver into the slot and pop the cover off. You’ll find a CR2032 battery inside. Replace the battery and secure the cover.

Dealing with Difficult Key Fobs

Some older key fobs may not have an easily removable back cover. In these cases, you’ll need to score around the edges with a small knife to create a separation. Use the flathead screwdriver to pry the key fob apart slowly. Replace the battery and consider using super glue to secure the cover back in place.

Example: Older Ford Key Fob

This key fob doesn’t have a visible backing that pops off. You’ll need to score around the edges with a knife. Once you’ve created a separation, use the flathead screwdriver to pry the key fob apart. Inside, you’ll find a CR2032 battery. Replace the battery and use super glue to secure the cover.

Example: Another Older Key Fob

Similar to the previous example, score around the edges with a knife. Use the flathead screwdriver to pry the key fob apart. Replace the CR2032 battery and secure the cover with super glue.

Handling Soldered Batteries

Some key fobs have batteries that are soldered onto the circuit board. These are usually rechargeable batteries like the VL2020. To replace these batteries, you’ll need a soldering gun. Desolder the old battery and solder the new one in place. This process requires more skill and patience.

Keyecu VL2020 Remote Key Rechargeable Battery for BMW E46 E60 E92 3 328 330 X5 (90 Degree Leg)
  • Battery Model: VL2020
  • Please compare the leg position carefully,this battery is 90 degrees leg
  • it is a Rechargeable battery

Where to Buy Replacement Batteries

You can purchase replacement batteries from various sources. One convenient option is to buy them online. For example, you can find the CR2032 battery on Amazon.com. For a comprehensive guide on replacing key fob batteries, visit FobBattery – Power Up: Replace Your Key Fob Battery Today.

FAQ

What type of battery does my key fob use?

Most key fobs use CR2032, CR2450, CR2016, or CR2025 batteries. Check your key fob or consult the manual for the specific battery type.

Energizer Lithium Coin Blister Pack Watch/Electronic Batteries, 1 Count (Pack of 2)
  • Pack of 2 batteries
  • Lithium coin batteries for watches and electronic devices
  • Has a power of 3 volts

Can I use any brand of battery?

Yes, but it’s recommended to use a high-quality battery for better performance and longevity.

Amazon Basics 4-Pack CR2032 Lithium Coin Cell Battery, 3 Volt, Long Lasting Power, Mercury-Free
  • Plastic, Metal
  • Imported
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032

Where can I buy replacement batteries?

You can buy replacement batteries at local stores or online.

Keyecu VL2020 Remote Key Rechargeable Battery for BMW E46 E60 E92 3 328 330 X5 (90 Degree Leg)
  • Battery Model: VL2020
  • Please compare the leg position carefully,this battery is 90 degrees leg
  • it is a Rechargeable battery

What if my key fob battery is soldered?

If your key fob battery is soldered, you’ll need a soldering gun to replace it. Consider seeking professional help if you’re not comfortable with soldering.

How often should I replace my key fob battery?

Typically, key fob batteries last 1-2 years. Replace the battery when you notice a decrease in range or response time.

Can I replace the battery myself?

Yes, replacing the battery yourself is straightforward with the right tools and instructions. Follow the steps in this guide for a hassle-free experience.

Conclusion

Replacing the battery in your car key fob is a simple task that you can do yourself. With the right tools and this guide, you’ll have your key fob working like new in no time. For more detailed guides and to find the exact battery for your car, visit FobBattery – Power Up: Replace Your Key Fob Battery Today.

Proudly powered by WordPress | Theme: Sprout Blog by Crimson Themes.