BMW X3 Key Fob Battery Remote Replacement E83, F25, G01 (2003 – 2019)

The BMW X3 has had 4 key fob variants over the years. The Diamond Shape Key, the Trapezoid Shape Key, and the Sleek Slant Shape Key. Some early models using the Diamond Shape require a more difficult replacement process, but newer models you can easily pop the battery right out to replace. To view battery replacements fo all BMW models, check out the BMW Key Battery Page here.

ModelTrimsYearsBatteryBuy
E83 X32.0i, 2.5i, 2.5si/ xDrive25i, 3.0i, 3.0si/ xDrive30i, xDrive18d, 2.0d/ xDrive20d, 3.0d/ xDrive30d, 3.0sd/ xDrive35d2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010VL 2020 3vCheck on Amazon
F25 X3xDrive20i, xDrive28i (3.0), xDrive28i (2.0T), xDrive35i, sDrive18d, xDrive20d, xDrive30d, xDrive35d2011, 2012, 2013, 2014, 2015, 2016, 2017CR2450Check on Amazon
F25 X3xDrive20i, xDrive28i (3.0), xDrive28i (2.0T), xDrive35i, sDrive18d, xDrive20d, xDrive30d, xDrive35d2014, 2015, 2016, 2017CR2032Check on Amazon
G01 X3xDrive20i, xDrive30i, M40i, xDrive20d, xDrive30d, M40d2018, 2019CR2032Check on Amazon
G01 X3xDrive20i, xDrive30i, M40i, xDrive20d, xDrive30d, M40d2018, 20193.7 V, li ion rechargeable polymer battery 1.97 Wh, 535 mah

How To Replace the F25 BMW X3 (2011-2014) Key Fob Battery

How to change BMW x3 2011-2014 smart key fob battery
How to change BMW x3 2011-2014 smart key fob battery

This is my main car! This is the first key fob video I ever made here It uses the CR 2450 coin battery. It shows how to replace the key fob battery for the BMW X3 2011, 2012, 2013, 2014 Models for the Trapezoid Shaped Key:

2011 - 2014 BMW X3 Key Battery Replacement F25 Fob Remote
This is the battery for this X3 key fob:
Sale
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

GIF Visual Guide

So to replace the battery on this BMW key Fob, open up the glove Department key just by depressing the button on the back. I'll separate the two pieces out.

Now, you can see there's two slots here on the backside on the second slot that doesn't hold the key for the glove box. You need to get in there and pop out this back in here. So you can actually just use the key itself and you can kind of hear it start to pop and that'll pop off this backside. Now you can see the battery in here. To get the battery out.

You can use a small screwdriver or you can even just use something like paper clip. Get in there and pop that battery out just like so. And once you've got the battery out, you can see there's kind of a side with some ridges or dots on it. That side needs to be down. So you can take your replacement battery

In this case, let's say CR 2450. And then side with the ridges, the dots, usually the side, also without the markings, that's going to go face down, back into the key Fob jus like so we can pop that back in back on and we're all set. That's how you re

How To Replace the F25 BMW X3 (2015-2018) Key Fob Battery

2015, 2016, 2017, 2018 BMW X3 Key Fob Replace
How to replace your key fob battery in a 2014-2018 X3 Sleek Fob

The later year models of the F25 x3 use the newer Sleek Slant Shaped Key. This is a similar back to the Trapezoid model, however the battery is different. It requires at CR2032 battery.

Battery: CR2032
Fob Type: Sleek Slant Shaped

2014 - 2018 BMW X3 Key Battery Replacement F25 Fob Remote
This is the battery for this X3 sleek key fob:
Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

GIF Visual Guide

Alright. In this video, I'm going to show you how to replace the battery in a BMW X3 . This is for the F 25 model. So BMW, this is for the X3 . This is for years 2014 through 2017, which is the last year of the F 25 model.

So this key, the first thing I want to do is to press this long side here. There's a little button on the side that's to remote the valet key. Once you've removed the valet key, right next to the back here the valet key. There's a small, little maybe half a finger nail length area where you can kind of put in the key and actually use that. You can use a key, the valet key itself or a small Phillips screwdriver.

Get in there and pop this back right off. And this will come off pretty easily. You can see where the hole is right there. So just kind of pry it up like that. And this will give you access to the internal CR 2032 replaceable battery.

You can pick these up pretty much most convenient source drugstores, or you can just get them on Amazon and have it delivered to you. Pretty simple. So this is CR 2032. And at the top here, just pop this off, grab a new battery, make sure the positive side is up towards you here. And I'd put in this bottom part first.

This thing's got some springs on it. So this battery can kind of fly. So, yeah, go ahead and put in the base here first and the new battery. And then take your backing and put in this bottom part first. And this will pop right back in.

It's pretty secure, pretty sleek. Put in the valet key and boom, that's it. You've got a new battery in your X3 F 25. This is the non display key model for years 2014 through 2017.

How to replace the E83 X3 (2003-2010) key fob battery

The E83 X3 model uses and older Diamond Key shape that contains a rechargeable battery. This is more complicated to replace as the battery must be removed with a soldering gun, and a new battery with the legs re-soldered on. It can be done in about 15-20 minutes and the battery itself is cheap. This video is for the 3-series, but it’s the same fob.

Battery: VL2020 3v

Fob Type: Diamond Key
1998 - 2005 BMW Diamond Key E46 3 Series Key Fob Battery Replacement DIY
This is the rechargeable battery for this X3 diamond key fob:
Sale
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

GIF Visual Guide

Alright. In this video, I'm going to show you how to replace the battery in this BMW diamond key that was used in the E46. This is for the 3- series from 1998 to 2005. BMW cars. So this is a fairly complex change, but I'm going to get right into it here.

So the first thing you need to do on this key is you need to separate it into two halves. So you'll notice around the edge here, there's kind of a line that separates this key Fob into two pieces . What you're first going to do is take a box cutter and score all the way around, cutting through and actually breaking through the plastic all the way around this key. And this may take some time.

This may take five minutes. This could take ten minutes. If you want to kind of do it carefully, try to keep the key as intact as possible. But the best key that I found to get some leverage was right here at the top. You can eventually cut through and then you can see the box cutter even going through there to start to get some separation between these two pieces.

So once you score all the way around, you'll be able to separate these two pieces here and get access to the circuit board and the battery that we'll need to replace. Now, the battery that you need here is a VL 2020. This is a rechargeable battery. Normally, when the key is in the ignition, this battery charges. But for whatever reason, if it dies and you need to replace it, this is what we're going to show you how to do.

So inside this part of the Fob here, there's a circuit board that you can remove. You can see there's kind of two points that connects here and you can just probably kind of tap it out like so you can't tap it out, maybe some small tweezers here, get that circuit board very delicately pull that out. Okay. So the circuit board here is what we're going to be working on. The key here is this battery that we want to replace.

There's two points that's attached to the board here. You can see these two points of solder here and here. These are called the legs of the battery. And these are where the battery actually attaches to the board. So to replace this battery, we need to get these desolder.

And then when we buy replacement, make sure that you buy one that has legs that are offset 90 degrees here and here, not that's offset 180 degrees, because then it won't match up with your circuit board. So I've got a soldering iron here and a little soldering vacuum. And what I'm going to do is just desolder these points here. And I just got this soldering iron for $19 on Amazon. And if you've never soldered anything before, don't worry.

This is actually not a bad little spot. To learn because there's not a whole lot you can screw up too much here. So what I'm just doing here is melting the solder and then suck it up. And I'm just going to melt some more here. Just decent amount and suck it up.

Okay. So we've got quite a bit removed there on that one. I'm going to do this other point here and see where we're at that's melted down nicely. A little more off here.

Okay.

So you can see all this solder that we've gotten off of here. And now this should allow us to easily pull off the VL 2020 rechargeable battery here from the circuit board. So let's see how we did. Excellent. Okay, so we've still got a little bit of solder there that we need to go.

So actually, this time I'm just going to melt it and see if I can let it drop through. There we go. Perfect. So, yeah, sometimes you can just have to suck it all away, but just melt it out. And there we've got the leg of the battery out on this one.

The second leg disappeared over the years. But that's okay. I think we'll still be able to attach it here, especially since we have a new battery. So new battery. Make sure that we've got leg here and a leg over here.

This one only has one. If you only have one, then work with what you got. So we're going to resolder this now. Attaching the battery there.

And the second point, the leg would actually go right in here. So I don't have a new battery. But we'd take the new one, make sure that the legs get in through those two points there.

I'm going to actually clear off some of this solder here to make a little more room here and get the legs in through there.

And then we are going to resolder once we have this actually attached here.

Okay. Then we'll take a little bit of solder and just solder on these points here.

Okay. And then the other leg over here like so. Okay, so now we've resoldered the new battery onto the board here and then we'll go ahead and just replace this back into its correct spot. Make sure the buttons here are going to the button side here. So flip this over and make sure that aligns back in there correctly.

All right. Snaps right in and then I'd apply some super glue here around the edges and then put the battery back together or the Fob back together. And if you superglue that, then you have a brand new working key Fob with a new VL 2020 battery on your 3- series for the E46.

How to replace the G01 X3 (2018-present) key fob battery

Battery: CR2032
Fob Type: Sleek Slant Shaped

The newest G01 model has two key variants, the Sleek Slant Shaped Key introduced in 2014 and the new display key, which is a mini computer on the key fob itself. The Display Key isn’t replaceable yet, and it’s a rechargeable battery that sits in your middle console to recharge wirelessly.

For the Sleek Slant Shape Key, it is very similar to the Trapezoid Shape Key where the back pops off and you can easily pop in a new battery, just a slightly smaller CR2032 battery is needed.

2018, 2019 BMW X3 Key Battery Replacement G01 Fob Remote
This is the battery for this X3 key fob:
Amazon Basics 4 Pack CR2032 3 Volt Lithium Coin Cell Battery
  • IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
  • DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
  • DESIGNED TO LAST: 8-year leak-free shelf life

GIF Visual Guide

In this video, I'm going to show you how to replace the battery in a BMW X 3 key Fob here. And this is for actually the G01 2018, 2019 models. If you don't get the display key and you get one of this newer kind of sleek keys, I'll show you how to replace this. So the first thing I want to do is to press this button on the side to remove the valet key. And once you've done that, there's a small opening just right, left of the valet key on the backside of the key.

And you can just put in a small flat head screwdriver. You can even use the valet key itself and just get a little bit of leverage right in that hole. And that will allow you to pop off this back here. Once you've popped off the back, you get access to the internal battery, which is a CR 2032. And remote that just pop off the top here, a little bit of leverage.

There are some Springs here, so this battery can go flying and pop in a new one. Again, this is the CR 2032 battery. Just make sure the positive side is up here. Pop that back in and place in the bottom part first. And that snaps in real nice.

Go ahead and replace the back and just make sure to put in the slanted part first. That'll pop back in. Put your valet key back in.

Okay, that's it. You've replaced the battery on your BMW X 3. This is the G 01 model for more recent years 2018 and 2019.

Frequently Asked Questions

What battery goes in a BMW X3 key?

It depends on your model year and type, but the most common BMW X3 key batteries are: CR2032, CR2450, and the VL2020 rechargeable battery. Find the full list of all BMW key batteries and pictures of each key/battery combo on our BMW key batteries page.