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How to Replace a BMW Key

Replacement of a BMW key is costly. BMW keys are highly-technical, and must be reprogrammed in order to work with the vehicle.

You can save money by purchasing a brand new BMW car key online, but you should find a vendor who is specialized in car keys that has excellent reviews. It's also recommended that you visit a dealer to ensure that your new key is properly programmed.

Smart Keys

Many of the latest BMW models are equipped with the smart-key system that lets you lock and unlock your car by simply pressing the steering wheel. Some models also feature remotes that allow you to start the engine and close the sunroof and windows from a distance. These keys feature radios for locking and unlocking and infrared (IR) to communicate with the dashboard.

The IR circuit powers an infrared bridge bidirectional that sends commands to and from the dashboard as well as to the receptacle in the key. This lets the key control the car from just a few meters away. The key also features an RF coil that detects the car's remote lock signal and transmits it to the dashboard.

The smart keys can also store information, such as mirror and power seat settings. To give access to someone else, you need to connect the key with an iPhone and then follow the instructions on your device. This will enable you to give them a key that can be used when their phone is connected and within Bluetooth range.





Contrary to older key fobs for cars that transmit the same frequency over and over (which could be affecting other makes and models utilizing the same system, and could makes it easier for tech-savvy thieves to take vehicles), modern smart keys broadcast a different encrypted signal every time they're used to open or close a door, or pop the trunk. The car's radio antennas respond by generating the corresponding frequency to identify the key, lock it or start it.

Smart key systems may be vulnerable to hacking, however. An experienced professional can be able to intercept IR transmissions and gain access to your vehicle. Always keep a spare key in your vehicle, or leave your smart key at home when you are planning to eat out or shop. If you lose your keys, make sure to have your VIN number and government ID in case you require a replacement.

Key Fob Batteries

The BMW key fob provides security and convenience with the press of a single button. But, as with everything that is dependent on a battery, the key fob's battery can die-often at the worst possible moment. It's easy to replace BMW key fob's battery.

Open the fob along the seam that connects the two halves. The backplate of the fob is typically fixed by a notch that can be opened using the fingers or a screwdriver with a flat blade. After the backplate has been removed, insert a new button cell battery into its place. The new battery will typically appear like a small coin, and have plus and minus marks printed on it. Inject the new battery into the fob in the same orientation as you did with the old battery, and then snap the two halves together.

After replacing the battery, test it by pressing each of the buttons on the fob to make sure they work as expected. Based on the model, you might need to reconnect your key fob to your vehicle or take additional steps to make sure it is working properly. Consult the owner's manual of your BMW for specific instructions on how to sync the key fob.

A weak or dead battery for the key fob can decrease the range of the signal that communicates with your car, limiting its ability to lock and unlock trunk and doors and arm/disarm the alarm system. It is time to replace the battery if you find yourself needing to be closer to your vehicle to unlock the doors or start the engine.

It's simple to replace the battery in your key fob at home. After replacing the battery, you should check the functionality of the keyfob by locking and unlocking your vehicle, or placing it in the ignition. Reassemble the keyfob and test it once more to ensure that it is working properly. Understanding the time when the batteries of the key fob require replacement and how to replace them, and how to start a vehicle with a dead battery will help you enjoy all of BMW's useful features.

Slant Shaped Key Batteries

If you're a BMW owner, you probably benefit from the many advantages of your car's keyless ignition and keyless entry features. These conveniences can make driving your BMW more comfortable and may even assist you to avoid some common automotive issues. However, if you aren't careful about the signs that your BMW key fob battery is depleting it could quickly be out of juice.

If your BMW key fob is damaged, it can't communicate with the computer in the vehicle to unlock the doors or start the motor. Fortunately, the battery inside the majority of BMW key fobs is replaceable inexpensively. The process is simple and takes just a few moments. If you have a spare BMW key, it's a good idea to keep it in your pocket so you can replace the battery when it is depleted of power.

The most important thing to keep in mind when replacing a BMW key fob battery is to select the correct replacement battery. A smart key requires a CR2450 battery, while the Comfort Access and sleek slant-shaped fobs utilized in a number of F-series models from 2011 to 2017 will require the CR2032 type of battery. Both are available at most auto shops and department stores at a reasonable price.

Another option is to get a replacement key for your BMW from a locksmith or dealership. The keys are laser cut and coded by the car manufacturers to ensure compatibility with keyless entry and start systems. The drawback is that these keys are more expensive than ones from the aftermarket and may take longer to arrive. If you're considering purchasing a replacement key for your BMW look into BimmerTech's easy online ordering process to save time and money.

While bmw car key to start your BMW is with a traditional key certain drivers prefer using their smartphones as a "surrogate" key. Your smartphone can connect to the keyless start and entry system via Bluetooth technology. This is particularly useful on hot summer days and when you don't want to carry a heavy BMW Key in your pocket.

Valet Key Batteries

Key fobs are a very useful tool but at times, you may be unable to recharge your battery. This can make it hard to lock your car, and it can also prevent you from turning on the engine and drive. Fortunately, replacing a BMW key fob battery is not difficult and can be done at home. The steps vary a little depending on what kind of key you own however, they're all very similar.

The latest slant-shaped key batteries are easy to replace through a an easy process. Press the small tab to unlock the valet key. It is located on the bottom or the side of the fob. You can then employ a flat screwdriver to remove the access port which is hidden by the battery. After the old battery has been removed, you can install another one and put it back together.

If you own an older, diamond-shaped key that uses rechargeable batteries, it can be more difficult to replace the battery. The keys are not intended to be replaced with batteries, and they can be damaged if you attempt to pry off the backplate. You can attempt to open it, but you will likely require the help of a professional to do the job. It is recommended that if you need to replace a battery, you contact an authorized dealer for assistance.

BMW keys are available in different styles. Each of these key fobs comes with a driver profile, and you can pair them to various drivers in the vehicle. This makes it easier for family members to share a car while being capable of adjusting their driving experience.

This article is most important because you must be aware of the type of key you own and how to replace it. It is crucial to be aware of this if you want your car to start when you press the buttons on your key fob. You can avoid frustration and save money by not needing to pay for an appointment with the dealership in the event that your key doesn't work properly.