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Hidden Features of Mini Key Fobs Key fobs are no longer just a decorative trinket. They can now do everything from locking and unlocking the doors to remotely starting the car. Certain models have secret features that owners might not be aware of. If your car's key fob begins malfunctioning, it's time to replace the battery. The good thing is that the task is pretty simple. Switchblade Keyless Entry Fobs Key fobs do much more than unlock and start an automobile. Click Home 's also a theft deterrent and security device. High-tech key fobs today are more powerful, convenient, and secure than ever. But their high cost can cause them to be expensive to replace if you lose or break one. A basic keyfob may cost a few bucks, but it can cost more than $200 to program. Those costs are even higher for high-end vehicles or those with special features. A few basic warranties or insurance coverage programs can provide a replacement fob, but the majority of people have to shell out hundreds of dollars if they need to get their fob fixed. Certain vehicles of recent years also have an accessory key fob that can be used as smart-keys. These fobs can lock, unlock, or arm an alarm with a pressing of the button. They could even summon your car like Tesla's summon feature, but they have to be in reach of the vehicle to operate. Fobs of this kind contain an iron key that folds into the fob in the same way as a switchblade knife. A spring holds the key inside when it's not in use and allows you to take it out at the push of a button to access the vehicle. A switchblade fob generally costs around the same price as a standard key fob with an iron key. Keyless Entry Fobs with a hidden physical key Many modern key fobs have more functions than simply unlocking and starting an automobile. The latest models can perform everything from rolling down windows, summoning the vehicle and even auto-parking. While some of these clever features might not be necessary on your daily commute however they can be useful in certain scenarios. Certain key fobs include a physical key, usually in the form a flat blade of metal. Keys can be placed in a small storage compartment inside the key fob or removed by pressing the button on the base. A spare key is helpful if you are in a rush to get to your BMW and you have forgotten your key. It is a given that the battery in your keyfob will die at some time. This could be an enormous neck pain. The key fob battery can be replaced easily and inexpensively. You can buy the replacement battery from your dealer, BimmerTech or a big-box retailer or hardware store. Certain BMW key fobs have the Display Key that allows you to manage your car via the key. You can verify if the doors are locked and schedule when the air conditioner is scheduled to turn on. You can even see the fuel level up to 1,000ft away. Keyless Entry Fobs with Side Mirrors Folding Today's key fobs are packed with more advanced electronics than ever before, and this tiny plastic device can do a lot more than simply lock or unlock doors and start the car remotely. It can also emit chirping sounds to help you locate your car in a lot or serve as a remote audio control that can control the radio stations in your car. Some of the latest models have a hidden function that lets you reduce the windows instantly at the touch of a button. This is great for hot summer days when your air conditioner cannot keep up. The sequence of button presses to activate the feature isn't always clearly labeled, so you may have to experiment with a few different combinations until you come across the one that is suitable for your car. If you prefer to keep your car in a compact space, the fobs of newer Chevrolet or GMC vehicles will automatically fold the side mirrors of the vehicle when you lock it. To activate this feature, just press the “lock button” on the fob and hold it for 2 seconds. Do you have a passenger in your car who is a gentle giant or simply doesn't have the same length legs as you do? If so, you may want to look into a car with a key fob that allows you to set an automatic seat memory. Some models, such as GMC, GMC permit you to set your preferred seat, and the car will remember it each time you start it. Keyless Entry Fobs with a Bluetooth Connection With the rise of smart keys and smartphones for car access criminals have been offered an easy opportunity to steal vehicles. Wireless protocols used by these systems can be hijacked by criminals who can disguise the signal from the key fob or smartphone to unlock and start your vehicle. A key fob, small hardware token that can be programmed, provides one-factor authentication on the device to facilitate access to physical objects like a vehicle, computer system restricted area or room, or mobile device. The fob transmits wireless signals to a device which recognizes the information and commands and performs predetermined functions such as locking or unlocking. In many instances keys are also a security token that supports two-factor or multi-factor authentication (2FA or MFA) methods to give you additional security. This is typically accomplished by adding biometric authentication to the equation, which could include fingerprints or iris scan, or a voice print, as an example. Proximity keyless lock systems like the Kwikset Kevo allow users to open their doors using smartphones or a Bluetooth-enabled key fob, eliminating the requirement for a traditional key. These systems are very popular with business owners as they allow administrators to manage access of users and onboard new employees without needing to change locks or distribute keys cards.