How to Replace a BMW Key

Replacement of the BMW key is expensive. This is due to the fact that BMW keys are high-tech and require reprogramming to work with your vehicle.

A new BMW key online could save you money, however it is crucial to find a seller that specializes in keys for cars and has excellent reviews. It is also recommended to visit a dealer to ensure that the replacement key is programmed correctly.

Smart Keys

Many of the latest BMW models come with a smart-key system that allows you to unlock and lock your vehicle by simply turning the steering wheel. Additionally, certain models even feature a system that allows you to start the engine from a distance and also remotely shut the windows and open the sunroof. These keys are advanced and use radio to lock or unlock, and infrared to connect with dashboard.


The IR circuit is powered by an infrared connection that sends commands from the dashboard, as well as to the receptacle inside the key. The key can be controlled by the car from a distance of a few meters. The key also features an RF coil that receives the remote lock signal of the car and transmits it to the dashboard.

These smart keys can also store information, such as mirror and power seat settings. If you wish to share access with a friend all you need to do is connect the key with an iPhone and follow the instructions on your device. This will the key to be shared with them that is working as long as their phone is in Bluetooth range.

In contrast to older key fobs, which transmit the same frequency over and over (which could affect other models and makes using the same system, and could make it easier for tech-savvy thieves to steal cars), modern smart keys transmit a distinct encrypted signal each time they're used to open or close a door, or open the trunk. The car's radio antennas respond by emitting the appropriate frequency to identify the key, unlock or start it.

Smart key systems could be vulnerable to hacking however. A skilled professional can be able to intercept IR transmissions and gain access to your vehicle. Always have a backup key or leave your smart key at home if plan to go out to eat or shop. If you lose your keys, make sure you have the VIN number of your BMW and a government ID in case you have to get a replacement from the dealer.

Key Fob Batteries

The BMW key fob is a convenient device that offers security and convenience at the push of a single button. But, as with everything that is dependent on a battery, the key fob's battery can die-often at the most inconvenient time. Fortunately, replacing the BMW key fob's battery is easy and quick.

Open the fob at the seam that connects the two halves. The backplate of the fob is typically fixed by a notch that can be opened using either a finger or a flat-blade screwdriver. Install a new button cell battery into its place after removing the backplate. The new battery is typically designed to look like a small coin, with plus and minus symbols printed on it. Insert the new battery in the same orientation as the old one, then snap the fob's two halves back together.

After replacing the battery, test it by pressing the buttons on the fob to make sure they work as expected. Based on the model of your car you may have to re-sync the key fob to your vehicle, or follow other steps to ensure that it functions properly. Check the owner's manual for your BMW for specific instructions on how you can re-sync the key fob.

A weak or dead key fob battery could reduce the range of the signal that communicates with your car, which can limit its ability to lock and unlock doors and trunk, or arm/disarm the alarm system. If you're finding that you need to step closer and closer to your vehicle to access the key fob to unlock or start the engine, it's time to replace the battery.

It's simple to replace the battery on your key fob at home. After replacing the battery, you should test the function of the keyfob by locking and unlocking your vehicle or placing it in the ignition. Then, reassemble the key fob and test again to ensure that it works properly. If you know when a key fob's battery requires replacement, knowing how to change the battery, and how to start your vehicle with an empty battery from the key fob you'll be on your way to enjoying all of your BMW's convenient and secure features.

Slant Shaped Key Batteries

If you're a BMW owner, you likely benefit from the many advantages of your car's keyless entry and ignition features. These conveniences can make driving your BMW more comfortable and may even assist you avoid common automotive issues. If you don't pay attention to the indicators that your BMW keyfob battery is running low, it may run out.

When your BMW key fob is damaged, it's no longer able to communicate with the vehicle's computer in order to unlock or start the engine. Fortunately, the battery inside the majority of BMW key fobs can be replaced relatively cheaply. The process is simple and takes only minutes. Keep a spare BMW in your pocket to charge the battery if it is exhausted.

When replacing a BMW keyfob battery, it's important to choose the correct type of battery. bmw keys replacement requires an CR2450 battery. Likewise, the Comfort Access and sleek slant-shaped fobs that are utilized in a number of F-series models from 2011 until 2017 will require the CR2032 battery. Both are available in most auto shops as well as department stores at a reasonable price.

Another option is to purchase a replacement key for your BMW from an authorized locksmith or dealer. The keys are laser cut and coded by car manufacturers to ensure compatibility with keyless entry and starting systems. These keys are more expensive and take longer to arrive than the aftermarket ones. BimmerTech offers a convenient online ordering system for BMW keys replacement. This will help you save time and money.

Some drivers prefer to use smartphones as an "surrogate key" to start their BMW. Your smartphone can connect with your BMW's keyless entry and start system by using Bluetooth technology. This can be particularly useful on hot days when you don't want carry the weighty BMW key in your pocket.

Valet Key Batteries

A key fob is a useful tool, but you might run out of batteries. This could make it difficult to lock your car, and also stop you from turning on the engine and drive. It is simple to replace the battery in a BMW keyfob. The steps will differ based on the kind of key, but they're all quite similar.

It is easy to replace the more modern key batteries with a slant-shaped design by following a an easy process. Simply press the small tab that opens the inside of the valet key located on the bottom or side of the fob. The battery is accessible by using a flat screwdriver. After removing the old battery, you can replace it with a brand new one. Then, put everything back together.

If you have an older diamond-shaped key with a rechargeable battery it could be more difficult to replace the battery. Contrary to the slant-shaped key, these are not intended to have the battery replaced and can be damaged if you try to remove the back plate of the key. You can attempt to force it open, but you will likely require the assistance of a professional for doing so. It is recommended that if you have to replace the battery, you contact an authorized dealer for assistance.

BMW keys come in many different varieties. Each key fob has its individual driver profile and can be linked to different drivers. This lets family members share the same car and still be able to customize their driving experience.

This is a crucial article since you need to know what kind of key you have and how to replace it. This is essential if you want to ensure that your car can start when you press the buttons on your fob. You can save yourself frustration and money by not having to make an appointment with the dealership when your key doesn't function properly.