How to Replace a BMW Key
Replacement of a BMW key is expensive. BMW keys are highly-technical, and need to be reprogrammed in order to work with the vehicle.
You can save money by purchasing a new BMW car key on the internet, but you need to find a seller who specializes in car keys that has excellent reviews. It is also recommended to visit the dealership to ensure that your new key is programmed correctly.
Smart Keys
A lot of new BMW models come with an intelligent-key system that lets you lock and unlock your vehicle with just a click on the steering wheel. Certain models also come with a remote system that allows you to start the engine and shut the sunroof and windows from an extended distance. These advanced keys use radio to lock or unlock and infrared to communicate with the dashboard.
The IR circuit is the source of a bidirectional infrared bridge that sends commands from and to the dashboard as well as to the receptacle within the key. The key can control the car at a distance of few meters. The key also comes with an RF coil that detects the remote lock signal of the car and transmits it to the dashboard.
These smart keys also store information such as power seat and mirror settings. If you'd like to share access to a person with whom you share access 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 when their phone is on and within Bluetooth range.
In contrast to older key fobs, which transmit the same frequency over and over (which could impact other models and makes that use the same system, not to mention making it easier for thieves with a tech background to take vehicles), modern smart keys transmit a distinct encrypted signal every time they're used to open or close a door or pop the trunk. The car's radio antennas respond by creating the corresponding frequency to identify the key, lock it or start it.
Hacking is possible but not impossible. A skilled professional could intercept the IR transmissions and gain access to your vehicle. To ensure your safety, keep a backup key or make sure to leave the smart keys at home when going out for a meal or shopping. If you lose your keys, make sure to keep your VIN number and government ID in case you require an replacement.
Key Fob Batteries
The key fob is a crucial feature of the BMW driving experience, offering security and convenience at the press of one button. The battery for the key fob can also go out of service, as with anything that is powered by batteries. This happens at the most inconvenient time. Fortunately, replacing the BMW key fob battery is easy and quick.
Open the fob along the line which connects the two halves. The fob's backplate is usually held in place by a notch that can be opened with a finger or a flat-blade screwdriver. After the backplate has been removed, you can insert a new button cell battery into its place. The new battery is usually formed like a small coin with plus and minus symbols printed on it. Insert the new battery in the same orientation as the previous one, and 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 function as expected. Based on the model, you could have to re-sync your key fob to your vehicle, or take other steps to make sure it functions correctly. If you need to update the sync of your key fob check the owner manual for the specific instructions applicable to your BMW.
A weak or dead battery in your key fob may reduce the range the signal can communicate with the car, limiting the capability to lock or unlock the trunk or doors, or arm or disarm your alarm system. It is time to replace the battery if you find yourself needing to get closer to your car to unlock the doors or start the engine.
It is easy to change the battery in your key fob at home. After replacing the battery, test the keyfob's functionality by locking and unlocking your vehicle, or placing it in the ignition. Then, reassemble bmw car keys , and then test it again to ensure it works properly. Understanding when the key fob's batteries require replacement, how to replace them, and how to start a car with a dead battery will allow you to take advantage of all 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 features make driving your BMW more enjoyable and could help you avoid some common car issues. However, if you aren't attentive to the indicators that your BMW key fob battery is getting low, it can quickly be out of juice.

If your BMW key fob fails to function and cannot communicate with the vehicle computer to open the doors or start the motor. Fortunately, the batteries in the majority of BMW key fobs can be replaced inexpensively. The procedure is simple and takes just about a minute. Keep an extra BMW in your pocket to recharge the battery if it runs out.
The most important thing to keep in mind when changing the BMW key fob battery is to choose the right replacement battery. The smart key requires a CR2450 as do the sleek slant-shaped, slant-shaped Comfort Access fobs used in many F series models from 2011 to 2017, require a CR2032 battery. Both kinds can be bought at many auto shops and department stores at reasonable prices.
A locksmith or BMW dealership can also supply you with an alternative BMW key. The keys are laser cut and coded by car manufacturers to ensure compatibility with keyless entry and start systems. They are more expensive and take longer to arrive than aftermarket versions. If you're considering purchasing an additional key for your BMW look into BimmerTech's online ordering system to save yourself time and money.
Some drivers prefer using smartphones as a "surrogate key" to start their BMW. By using Bluetooth technology, your smartphone can connect to your BMW's keyless entry and start system. This can be especially useful on hot days when you don't want carry an oversized BMW key around in your pocket.
Valet Key Batteries
Key fobs are a very useful tool, but sometimes you may run out of battery power. This could make it difficult to lock your car and stop you from being in a position to start the engine. It is simple to replace the battery on a BMW keyfob. The steps may vary depending on the type of key, however they're all pretty similar.
The newer slant-shaped batteries for key batteries are simple to replace using a an easy process. Press the small tab to release the valet key. It is located on the bottom or side of the fob. The battery is accessible with a screwdriver that is flat. After the old battery has been removed, you can put in the new one and put everything back together.
It isn't easy to replace a battery on an older diamond-shaped key with a rechargeable one. bmw replacement keys are not designed to be replaced with batteries, and could be damaged if you attempt to pry off the backplate. You can force it open but you'll probably need the help of an expert. It is advised that if you require to replace the battery, you contact a dealership for professional help.
Another thing to think about is that there are different kinds of BMW keys to choose from. Each key fob comes with its individual driver profile and can be connected to various drivers. This lets family members share the same car but still have the ability to personalize their driving experience.
The most important aspect of this article is to know the type of key you own and how to replace it. This is essential if you want to ensure that your car will start when you push the buttons on your fob. This can help you avoid frustration if your key isn't working properly, and it can also save you a lot of money if you are not required to pay for a service appointment at an auto dealership.