
Table of Contents
What battery is used for BMW key?
For drivers with BMW Comfort Access, BMW key fob battery replacement will require a CR2032 battery. Here’s how to replace the battery from your BMW key fob: Press in the small tab on the side of your key fob, and remove the metal valet key.
Can you replace BMW key battery yourself?

How do you open the key fob on a 2008 BMW?

What happens when BMW key battery dies?
Will a BMW start with a dead key fob? If your BMW key fob’s battery has run out, you won’t be able to unlock your vehicle remotely or, if your BMW has Comfort Access, use keyless entry. However, you can still access and start your car manually.
Why does my BMW key fob not work after replacing battery?
For your remote key fob to work properly, it has to be connected to a receiver in the vehicle. When the battery in the fob is replaced, it can sometimes interfere with the paired connection between key and car, in which case you’ll need to reset it.
How do you start a BMW with a dead key fob?

How much does it cost to replace BMW key fob battery?
If you have a smart key or comfort access BMW key fob, you’ll need to replace the battery by following these quick steps: Purchase a CR2032 battery from an auto shop or department store. You can expect to pay about $2 for it.
How long does BMW key battery last?
BMW key fob batteries need replacement every 3-5 years depending on usage.
Do I have to reprogram my key fob if I change the battery?
Typically, you do not need to reprogram the key fob after changing the battery. However, if you’ve replaced not just the batteries but also some of the internal wiring and electronics, you may need to reprogram it by pairing it with your vehicle once again.
What happens if you don’t program BMW battery?
If you don’t register it with the car, it causes the car to charge it too much or too little. Older batteries get more charge sent to it than newer ones, so putting a new battery in will cause the car to overcharge it, which prematurely kills your battery.
How do I reset my BMW after changing the battery?
- First of all, turn the ignition key of the BMW car to the accessory position once the lights and radio are on. You have to do this before starting the vehicle.
- Again, press the “Trip” button and hold until Reset appears.
- Then, press the same button for the third time.
How do I change the battery in my BMW 5 Series Remote?

How do I charge my BMW key?
You can charge your BMW key battery while you are driving. The makeup of the ignition includes a magnetic coil for charging purposes. To charge your key, insert the key into the ignition and turn it to position 1 or 2. The battery will automatically begin charging.
How much do BMW keys cost?
Several BMW dealers said that the more advanced security features embedded in the fob for a 2020 X5 justify the roughly $500 they charge to replace and program one.
Can a dead key fob stop your car from starting?
If you’ve just found yourself locked out of your car with a dead key fob, we may be able to get you going. Remote key fobs are great until they fail. When they do, you may not be able to enter the car. Then, if you get inside, getting the car started can be foiled by a dead START button.
How do you start a BMW 5 Series without the key?

Can you start a car without a key fob?
Yes, once the car is started, the engine will run without the key fob. However, once the engine shuts down, you won’t be able to restart it without the key fob.
How do I reset my key fob after replacing the battery?

How do you know if your key needs to be reprogrammed?
A car’s on-board computers is accessible when it recognises the microchip inside transponder car keys, and without this the car will not open or start, which is the case sometimes when the keys unique code cannot be read. When this happens car key reprogramming is required.
Why does my car key not work after replacing battery?
There is a high chance that a car remote has been reset during the battery change. The key fob can also reset when you press certain buttons. So, more than one key fob not working is a good signal that the car key remote has been reset.
What if my key fob dies?
If your key fob dies while driving, nothing will happen. The car will continue to operate simply because the key fob is an unlocking and starting device only. Once the car is in motion, the ability of the key fob to affect the ignition or engine is zero.
How long does a key fob last on low battery?
The durability of a low battery key fob is relative to whether it is a smart key fob or a regular fob. A low battery smart key fob will last for as long as 2 to 3 years; while, a regular key fob with a low battery will last up to 4 to 6 years, respectively.
Can you start BMW with metal key?
Step 1: Remove the metal blade from the BMW key fob. You can find it on the other side of the buttons. Step 2: Now, the next step is to get inside the vehicle and with that metal piece, unlock the driver side door of the vehicle. Step 3: Place the key in the ignition slot.
Does AutoZone program key fobs?
AutoZone provides a variety of key fobs that work for most vehicle makes, and they will help you match and program your fob to your car. Key fobs can range from $20 to $400 depending on the vehicle and the type of fob you buy.