How to perform a Chrysler 300 key fob battery replacement – Your ultimate DIY remote key fob battery change guide.
With a single button press on the key fob, Chrysler 300 owners can unlock and lock their cars doors remotely. This is called a keyless entry system which brings incredible ease and convenience. However, there comes a time when your remote key fob battery will stop working.
What do you do? Take it to the dealership and spend more money? Absolutely not. That’s where we come in for you.
In this blog, you will find the easiest way to replace your remote key fob battery at no extra cost.
Keep reading to discover the right battery replacement guide for your key fob type.
For other Chrysler models, see our Chrysler }key fob battery page.
| MODEL | FOB | YEARS | BATTERY | BUY BATTERY |
|---|---|---|---|---|
| 300 | Rounded | 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 | CR2032 | Check on Amazon |
| 300 | Teardrop | 2008, 2009, 2010 | CR2032 | Check on Amazon |
| 300 | Fixed Key | 2005, 2006, 2007 | CR2032 | Check on Amazon |
| 300 | Pear-Shaped | 1999, 2000, 2001, 2002, 2003, 2004 | CR2016 | Check on Amazon |
How to Replace the Chrysler 300 “Rounded” Key Fob Battery (2011- 2021)
This process is straightforward and quick. Scroll down to see a full video tutorial or keep reading for a step-by-step guide on Chrysler 300 key fob battery replacement.
What you will need:
- 1x CR2032 battery
- Flat-head screwdriver
Step 1
The first thing is to pull the silver switch on the back of the remote key fob to release the internal key.
Step 2
Next, locate the keyhole at the bottom of the key fob. Can you notice a slot beside it? Good. Insert a flathead screwdriver into the slot and twist. This will separate each back cover of the device.
Step 3
From here, all you need to do is lift the old battery out of its housing with your flathead screwdriver. Be gentle here!
Step 4
Now, take a new battery (CR2032) and install it into place with the positive side down. The proper method is to push the battery down into the metal component and press the other side.
Step 5
Finally, put each back cover back and click together.
That’s all it takes. You now have a brand new key fob battery. Well done!
Test your vehicle. For example, lock and unlock the doors of your car to confirm that you install the battery correctly. You can also press any button to see if the lights come on.
This is the battery for this Chrysler 300 “Rounded” key fob:
How to Replace the Chrysler 300 “Teardrop” Key Fob Battery (2008, 2009, 2010)
You can replace the keys in this remote key fob with ease and start enjoying your keyless entry remote. Scroll down to see a full video tutorial or keep reading for a step-by-step guide on Chrysler 300 key fob battery replacement.
What you will need:
- 1x CR2032 battery
- Flat-head screwdriver
Step 1
Find the seam between the two halves of the key fob. This is where you insert your flathead screwdriver. Carefully twist and wiggle as you push it in until each back cover of the device pops open.
Step 2
Now, carefully remove the rubber piece. Next, use your finger or a flathead screwdriver to gently lift the old battery out of its housing.
Step 3
Take a new CR2032 battery and click it into place ensuring the positive side faces down.
Step 4
Finally, set the rubber buttons back on top of the new battery and click the front piece of plastic back into place.
You’re done. That’s all it takes. No more manual entry. If your car door locks or unlocks then you did it right. Congrats! You just yourself a trip to the dealership.
This is the battery for this Chrysler 300 “Teardrop” key fob:
How to Replace the Chrysler 300 “Fixed Key” Key Fob Battery (2005, 2006, 2007)
This guide shows you how to change your dead battery at home. Scroll down to see a full video tutorial or keep reading for a step-by-step instructions.
What you will need:
- 1x CR2032 battery
- Flat-head screwdriver
Step 1
Locate the small indentation on the bottom-left side of the key fob. You will use this slot to open up the key fob.
Step 2
Take a flathead screwdriver, insert it into this slot, and hold the key fob loosely while you turn the screwdriver like a key. This action will create an opening. Work your way through that opening and the two halves of the key fob will separate.
Step 3
Next, carefully remove the rubber piece with the buttons on it. Set it aside.
Step 4
Now that you have access to the battery, it’s time for battery replacement. To do this, use the same screwdriver to carefully lift the battery up from under.
Step 5
Take a new battery (CR2032) and install it into place positive side down.
Step 6
The last thing is to put the rubber piece back in the right place and click the cover of the key fob back on.
Your new key fob will now work like it’s brand new. That’s how you change a dead battery. Nice work!
Remember you can find your battery type on the Amazon store by clicking the link below.
This is the battery for this Chrysler 300 “Fixed Key” key fob:
How to Replace the Chrysler 300 “Pear-Shaped” Key Fob Battery (1999 – 2004)
This particular key fob uses 2 CR2016 batteries. However, the process is just as easy as those with a single battery. Scroll down to see a full video tutorial or keep reading for a step-by-step guide.
What you will need:
- 2x CR2016 batteries
- Flat-head screwdriver
Step 1
Find the slot on the bottom right side of the key fob.
Step 2
Insert a flathead screwdriver into this slot and gently twist. Continue until the two halves of the device come apart.
Step 3
Now, use your fingernail or screwdriver to remove both of the batteries. The first one comes out easily. For the second, push down the battery on one side, the other side will come up and you can use your finger to get it out.
Step 4
Next, click the two new batteries (CR2016) into place, one on top of the other as they originally were. Ensure both batteries have the positive sides up.
Step 5
Round up the process by pressing and clicking the two halves of the key fob back together and you’re good to go!
That’s all it takes. Remember that you can pick the new batteries up on amazon at an affordable price.
This is the battery for this Chrysler 300 “Pear-Shaped” key fob:
Common Reasons Why Your Chrysler 300 Key Fob Has Stopped Working
It’s easier to jump into changing the battery inside your key fob or the key fob itself when it stops working. However, that may not always be the solution.
Aside from a dead battery, here are other things to look into.
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Unsoldered leads
There is normal circuitry inside the key fob consisting of soldered leads to buttons. In an instance where the metal becomes worn out, the key fob will stop working.
You’ve got two ways to solve this problem.
a. An attempt to solder the leads DIY. Note, however, that this process is pretty technical and may require the service of a professional instead.
b. Buy a generic key fob that works well for your Chrysler 300.
If you go for option 2, you may need to reprogram your key fob before getting it to function with your vehicle. This will cost you some extra money. The good news is, in some cases, reprogramming may not be necessary for a keyless entry system.
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Car battery problem
Another common reason why your key fob may not function is due to a low car battery. In this case, the car is not able to sense the signals coming from your key fob.
Check out the sign on the dashboard to see if there is a weak battery sign. If there is, then getting your car battery charged is the way out here, and not a new key fob.
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Using the wrong key fob
One important thing to note is that key fobs do not work with any type of vehicle. You have to be selective and take note o the model or type before purchasing a new key fob for your car.
If you accidentally pick another vehicle’s key fob in store, the keyless entry system won’t work. This is because your Chrysler 300 onboard computer does not identify the key fob you’re using and will cease to start working.
For your Chrysler 300 key fob to function, double-check and ensure you’re using the right one.
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Damaged key fob
If your Chrysler key fob doesn’t function it could be physically damaged due to accidental dropping or water exposure. Moisture can prevent remote key fobs from working. You may need to manually unlock or lock your car doors in the meantime, except you’ve got a spare key.
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Radio interference
Do you have a device that may create radio interference close to you?
If yes, this is a jammer that will hinder the signal from your car, which in turn, hinders the functionality of your key fob. So, irrespective of the number of times you press the buttons on your Chrysler 300 key fob, your car doors will neither unlock nor lock.
To fix the problem, simply move away from where you are.
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Faulty keyless entry system
The keyless entry system of your car has a role to play in your key fob work. This is because even when the key fob is able to initiate the unlock signal on your vehicle if the keyless entry system of your Chrysler 300 car has developed a fault, you won’t get the right response.
The way out? Place a phone call to your professional dealership to check for a proper diagnosis. They are the only ones that can help resolve this.
Frequently Asked Questions
What type of battery does my Chrysler 300 key fob need?
In most cases, a Chrysler key fob battery size is an energizer CR2032 battery. You can use this battery to replace the original one of the same battery type. This battery should last you 3 to 4 years depending on how often you use your key fob.
Note that some models may take a CR2016 battery inside.
Does my Chrysler key fob need reprogramming after battery replacement?
Not always. You don’t need to reprogram your key fob if all you did was a battery change.
Why won’t my Chrysler 300 key fob work after replacing the battery?
It could be a programming problem and your remote key fob may need to be reset. In that case, consult the car’s manual or car manufacturers to fix it. However, the service of a dealership is much preferred and safe.
How much will it cost to fix my Chrysler 300 key fob?
To fix your remote key fob, a locksmith will most likely charge you anything between $80 to $100. Additionally, you will pay about $20 -$30 when you purchase a generic remote key fob.
Chrysler 300 key fob battery replacement – Bottom Line
You don’t have to say goodbye to a keyless entry remote when you have a hard time using your original key fob or when it completely stops working. The guide above will help you fix the problem of dead batteries in your Chrysler 300 key fobs in only minutes.