How to Replace the Battery in a Chrysler Key Fob?

by Phil Borges // in Car

It can be extremely frustrating when your Chrysler key fob stops working. There are a few different reasons why this might happen, but the most common is the battery in your key fob has died. If you need to change the battery in your Chrysler Key Fob, there are some things you should know about before taking action. This article will teach you how to replace the battery on a Chrysler 300 Key Fob and includes tips for buying batteries online, as well as what type of batteries work best for this car model.

How to change the battery in a Chrysler Key Fob?

Chrysler key fob battery replacement is very simple and should take about five minutes or less to complete this task. Here’s the simple guide to remote keyless entry battery change DIY:

Step 1: The first thing you want to do is flip over your Chrysler key fob remote case and locate the ignition key release switch (it’s like a small grey metal switch). Slide it to release the physical key from the fob. Place the physical key in a safe place as you will need to return it later after the battery replacement.

Step 2: Gently pry the two halves of the key fob housing apart with a screwdriver inserted in the hole where the metal key used to reside.

To prevent the key fob surfaces from being scuffed or damaged, either cover the screwdriver with a thin microfiber cloth or use a plastic pry bar tool.

Step 3: Carefully remove the old battery from the compartment in the back half of the remote housing with your fingernail, or you can use a small flathead screwdriver.

Take note that the metal electrical contacts in this key fob are fragile, and they’re easily bent or damaged, so be careful when performing this process.

Step 4: Insert the new battery into the compartment and follow the correct battery orientation. Be sure that the side with the “+” positive sign is facing down and the sign with the “-” negative sign is facing up.

Step 5: Align the front cover with the back portion of the key fob housing. Gently tap together the two halves of the key fob until they are fully connected.

Step 6: Slide in back the emergency metal ignition key into the hole until it clicks in. Run a test on your key fob to make sure it is functioning properly.

You should see your automobile’s parking lights flash and hear its door locks or unlock if the new battery replacement was successful. Indeed, changing battery in Chrysler key fob is not a hard task.

What are other things you can do with your key fob while the battery is dead?

  • Your key fob will still work as an emergency key, so you can still use it to lock or unlock the car doors.
  • You may also start your car by placing the remote key fob in the charging area once you’ve entered the vehicle. The engine will still recognize the key fob and start-up even when the battery is dead.

Don’t forget to replace the battery in your key fob as soon as possible to avoid inconveniences.

Batteries for this key fob are easy to find. There are many different options available in-store or online just be sure to get the recommended battery for your key fob model.

What battery does a Chrysler key fob use?

Chrysler 300 key fobs are powered by batteries. The key fob battery may need to be replaced every two years or when the battery is low.

The type that is required for a battery for Chrysler key fob is a 3V CR2032 Lithium with a 20mm diameter and 3.2mm height.

You can find these batteries at a local retailer that sells batteries or a hardware store. These are also available online if ever you are unable to find them in your area. These batteries cost about $5 on average.

The battery life varies depending on a variety of factors, such as usage, weather conditions, and so forth. A key fob cover or a case may be beneficial to better safeguard your Chrysler 300 key fob and extend its battery life.


If you’re experiencing issues with your Chrysler Key Fob, it may be because the battery has gone dead. It is best that you change the battery the very first time you notice that your key fob isn’t working. It is also a good idea that you know how to change the battery so that you can be prepared when the battery goes out. Purchase a spare battery in case you ever need it in the future.

Your key fob is your convenient access to your Chrysler car. Changing the battery in your key fob regularly is important so that you can continue to use it for years. It’s easy to replace the battery in your Chrysler Key Fob and will save you time and money. Remember these steps next time you need a new battery for your key fob!

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.