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How to Replace a BMW Key

Replacement of the BMW key is costly. BMW keys are high-tech, 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 must find a seller who specializes in car keys with good reviews. It is also recommended that you visit the dealership to ensure that your new key is programmed correctly.

Smart Keys

Nowadays, a lot of new BMW vehicles come standard with an intelligent key system that allows you to lock and unlock your car with a simple click of an icon on the steering wheel. Some models also have remotes that allow you to start the engine and shut the sunroof and windows from the distance. These keys are advanced and use radio to lock or unlock and infrared to communicate with dashboard.

The IR circuit is the source of a bidirectional infrared bridge that sends commands to and from the dashboard as well as to the receptacle within the key. The key can be controlled by the car even at a distance of few meters. The key is equipped with an RF coil that picks up and transmits the remote signal for locking from the car to the dashboard.

The smart keys can also save information such as the power seat and mirror settings. If you'd like to share access to a friend all you have to do is pair the key to an iPhone and follow the instructions on your device. This will permit you to share an electronic key that can be used as long as the phone is turned on and is within Bluetooth range.

Modern smart keys, unlike older key fobs for cars that broadcast the same frequency over and over again (which could impact cars that use the same system, making it easier for cyber-savvy criminals to take cars) they transmit a different encrypted message each time they're used to open or shut doors or open the trunk. The vehicle's embedded radio antennas respond by creating the corresponding frequency to identify the key, unlock or turn it on.

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

Key Fob Batteries

The BMW key fob offers security and convenience with the click of a button. But, just like anything that relies on batteries the battery of the key fob is prone to dying at the worst possible moment. Fortunately the replacement of a 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 secured by a an opening that can be opened using an screwdriver with a flat blade or a finger. Once the backplate is removed, you can insert a new button cell battery into the slot. The new battery is typically shaped like a small coin, with plus and minus symbols on it. Place the new battery in the same direction as the previous one, and then snap the fob's two halves back together.

After replacing the battery on the key fob, press each button to verify that it is working as expected. Depending on the model, you might need to reconnect your key fob to your vehicle, or take other steps to make sure it is working correctly. If you have to sync your key fob again check the owner manual for detailed instructions specific to your BMW.

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

The battery replacement for the key fob is a simple job that can be completed at home. Once the battery is replaced, it's important to test the functions of the key fob by locking and unlocking the vehicle, or placing it in the ignition. Reassemble the keyfob and then test it again to confirm that it's working as intended. Knowing what happens when the batteries on the key fob need to be changed, how to replace them and how to start a vehicle with a dead battery will enable you to make the most of BMW's features.

Slant Shaped Key Batteries

If you're a BMW owner, you likely enjoy the benefits of the keyless ignition and entry features. These conveniences can make driving your BMW easier and even help you to avoid some common automotive issues. If you're not attentive to the indicators that your BMW key fob battery is depleting it will soon run out of juice.

If your BMW key fob is damaged and is no longer able to communicate with the vehicle's computer to unlock or start the engine. Fortunately, the battery in most BMW key fobs is replaceable cheaply. The process is straightforward and typically takes a few minutes to complete. If you have a spare BMW key It's recommended to keep it in your pocket to ensure that you can replace the battery when it runs out of power.

When replacing a BMW keyfob battery, it is important to select the right kind of battery. A smart key will require the CR2450 battery, whereas the Comfort Access and sleek slant-shaped keys that are used in a variety of F-series models between 2011 and 2017 will require the CR2032 battery. Both are available at many auto shops and department stores at reasonable prices.


Another option is to get an alternative key for your BMW from an authorized locksmith or dealer. These keys are laser cut and digitized by the car manufacturers to ensure compatibility with keyless entry and starting systems. These keys are more expensive and take longer to arrive than replacement versions. If you're interested in getting an additional key for your BMW look into BimmerTech's online ordering system to save yourself time and money.

Some drivers prefer to use smartphones as a "surrogate key" to start their BMW. Smartphones can be connected to the keyless entry and start system via Bluetooth technology. This is particularly useful on hot days in the summer, when you don't want to carry around a heavy BMW Key in your pocket.

Valet Key Batteries

A key fob can be an effective tool, however it is possible to run out of batteries. This can make it difficult to lock your car and prevent you from being in a position to start the engine. It is simple to change the battery in a BMW keyfob. The steps may differ slightly depending on the kind of key you have, but they are all fairly similar.

It is simple to replace the more modern key batteries that have a slant shape with a simple procedure. You just need to press the small tab to release the inside of the valet key located on the bottom or side of the fob. Then, you can make use of a flat screwdriver remove the access port which is hiding the battery. Once the old battery is removed, you can install a new one and then put everything back together.

It can be a challenge to replace a battery in an older diamond-shaped key with rechargeable ones. The keys are not designed to be replaced with batteries, and could be damaged if you try to remove the backplate. You may force it open, but you'll probably need the help of an expert. It is recommended that if you have to replace the battery, you contact a dealership for professional help.

Another thing to consider is that there are many different types of BMW keys that are available. Each key fob comes with a driver profile, and you are able to connect them to different drivers in your vehicle. This lets family members share the same vehicle, but still have the ability to personalize their driving experience.

This is a crucial article because you must be aware of the type of key you own and how to replace it. key for bmw is essential if you want to ensure that your vehicle can start when you press the buttons on your fob. This will save you from frustration when the key isn't functioning correctly, and can also save you a significant amount of money if you're not forced to pay for a service appointment at a dealership.