How to Replace a BMW Key
The cost of replacing the BMW key can be expensive. This is due to the fact that BMW keys are highly-technical and require reprogramming in order to work with your vehicle.
Purchasing a new BMW key online will save you money, but it is crucial to find a vendor that specializes in car keys and has positive reviews. It is also recommended to visit the dealership to make sure your replacement key is programmed correctly.
Smart Keys Keys
Nowadays, a lot of new BMW cars come with a smart key system that lets you lock and unlock your vehicle with just a click of an icon on the steering wheel. Some models also feature remote systems that allow you to start the engine and shut the windows and sunroof from a distance. These advanced keys use radio to lock and unlock and infrared to communicate with the dashboard.
The IR circuit creates a bidirectional infrared bridge which sends commands to and from the dashboard and to the receptacle within the key. The key is able to control the car at a distance of few meters. The key also comes with an RF coil that detects the car's remote lock signal and transmits it to the dashboard.
These smart keys also store information such as mirror and power seat settings. To share access with someone else, you simply need to pair the key with an iPhone and then follow the directions on your device. This will allow you provide them with a key that works when their phone is on and within Bluetooth range.
Modern smart keys, as opposed to older key fobs for cars that broadcast the same frequency over and over again (which could affect cars using the same system and make it easier for cyber-savvy criminals to steal cars) They transmit a distinct encrypted message each time they're used to open or shut doors or open the trunk. The car's radio antennas respond by generating the corresponding frequency to identify the key, unlock or open it.
Hacking is possible however, it is not impossible. An experienced professional can be able to intercept IR transmissions and gain access to your car. Always have a backup key or leave your smart key at home if are going to eat out or shop. If you do lose your keys, make sure you have the VIN number of your BMW and government ID available in case you need to obtain a replacement from a dealer.
Key Fob Batteries
The BMW key fob provides security and convenience at the press of a single button. The battery of the key fob could also die, as with any device powered by a battery. This occurs at the worst time. Fortunately replacing a BMW key fob's battery is easy and quick.
TheKeyLab at the seam that joins the two halves. The fob's backplate is secured by a the notch that can be opened with the flat-bladed screwdriver or finger. Install a new button cell battery after removing the backplate. The new battery is typically designed to look like a small coin with plus and minus symbols printed on it. Place the new battery in the same direction as the previous one, and then snap the fob's two halves together.
After replacing the battery on the key fob Press each button to verify that it works as expected. Based on the model you have you may have to reconnect the key fob to your vehicle or follow other steps to ensure proper operation. If you're required to update the sync of your key fob, consult the vehicle's owner manual for detailed instructions specific to your BMW.

A weak or dead key fob battery can reduce the range of the signal that communicates with your car, limiting its ability to lock and unlock the doors and trunk and 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 your engine, it is likely time to replace the battery.
Changing the key fob's battery is a straightforward task that can be completed at home. After the battery has been replaced it is important to verify the function of the key fob by locking and unlocking the vehicle or inserting it into the ignition. Reassemble the keyfob and test it again to confirm that it is working properly. By knowing the time when a key fob's battery needs to be replaced and how to replace the battery, and also how to start your vehicle using a an empty battery from the key fob, you will be well on your way to enjoying the BMW's convenience and secure features.
Slant Shaped Key Batteries
If you're a BMW owner, then you benefit from the many advantages of the keyless entry and ignition features. These conveniences make driving your BMW much more comfortable and could assist you in avoiding some common car issues. If you're not careful about the signs that your BMW key fob battery is dwindling, it can quickly run out of juice.
If your BMW key fob fails to function and it isn't able to communicate with the vehicle computer to open the doors or start the motor. The battery in most BMW keys can be easily replaced. The process is simple and usually takes just a few minutes to complete. Keep an extra BMW in your pocket to charge the battery if it runs out.
The most important thing to remember when replacing the BMW key fob battery is to use the right replacement battery. A smart key will require an CR2450 battery. Likewise, the Comfort Access and sleek slant-shaped fobs that are used in many F-series models between 2011 and 2017 will require the CR2032 battery. Both are available at many department stores and auto shops at reasonable prices.
Another option is to purchase an alternative key for your BMW from an authorized locksmith or dealer. The keys are laser-cut and coded by the vehicle's manufacturer to ensure compatibility with the keyless entry and start system. The drawback is that the keys are more expensive than the aftermarket versions and can take longer to arrive. If you're interested in getting an additional key for your BMW you should consider BimmerTech's easy online ordering process to save yourself time and money.
While the most common way to start your BMW is with the traditional key however, some drivers prefer using their smartphones as an "surrogate" key. Your smartphone can connect with your BMW's keyless entry and start system via Bluetooth technology. This can be particularly useful during hot weather when you don't want carry a heavy BMW key in your pocket.
Valet Key Batteries
Key fobs are a useful device, but sometimes you may be unable to recharge your battery. This could make it difficult to lock your car and also prevent you from being in a position to start the engine. It is easy to change the battery in a BMW keyfob. The steps may vary depending on the type of key, but they're all fairly similar.
The newer slant-shaped batteries for key batteries are easy to replace with simple steps. You simply need to press the small tab that opens the inside of the valet key, which is found on either the bottom or side of the fob. The battery can be removed by using a flat screwdriver. After you've removed the old battery you can replace it with a brand new one. Then, put everything back together.
If you own an older diamond-shaped key that has a rechargeable battery It can be tricky to replace the battery. These keys are not designed to be replaced using a battery, and can be damaged if you try to pry the backplate off. You can try to force it open however, you'll need a professional to do the job. It is recommended that if you have to replace a battery, you contact an authorized dealer for assistance.
BMW keys come in many different styles. Each key fob comes with a driver profile, and you are able to pair them to different drivers in the vehicle. This lets family members use the same vehicle while still being able customize their driving experience.
The most important part of this article is that you need to know the type of key you have and the best way to replace it. It is essential to know this if you would like your car to start once you push the buttons on the key fob. This will help you avoid frustration when the key is not working correctly, and it could also save you a significant amount of money if you're not obligated to make a repair appointment at the dealership.