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Key fobs of today do much more than simply unlock and start the vehicle. They can also control your sunroof and even the windows. They can be expensive to replace in the event that you lose them or damage them.

It's possible to change the fob battery yourself and save money. Here's how begin by finding an opening or latch on the case of the key fob and then insert the tool.

Battery

Modern key fobs are useful and practical, however they need a little care to keep them working properly. As time passes, the battery in the key fob will run out of juice and will need to be replaced. If your car is difficult to start or the buttons stop working, you'll know it's time to replace the battery.

Changing the battery in your key fob is fairly simple. First you need to place the key fob on a flat surface and press the metal button until it pops out. Use a screwdriver with a flat blade or your fingernail to gently break apart the two halves.

Then, lift the clips that hold the battery and then remove it. If your key fob is equipped with a slot to hold the battery then replace it with an alternative. Be sure to insert the new battery in the correct direction and also in the plus and minus.

You'll require an CR 2032 3V coin cell battery which is readily available in stores that sell batteries, or online. The battery is typically a small disc that has a plus or minus symbol on it. When handling the battery, you must be careful because it could leak when your hands are dirty. The leakage can damage circuit boards and make them less likely to function properly in the future.

Programming

Today's car key fob does more than just unlock and begin the car. It's also an instrument for controlling various systems. It can be used to change your seat and mirror adjustments, setting the radio's and climate control preferences, and a host of other functions that are tailored to your needs. Unfortunately these smart key fobs are also susceptible to be damaged by various reasons. Sometimes, simply replacing the battery in your key fob can work however, at other times, it could be necessary.

It's not that difficult to change the programming of an ignition key fob and you can do it at home or work. First, lock your vehicle and ensure that the keys are inside. Press and hold the "Unlock" and "Lock" buttons on your new key fob at the same time until you hear a sound or a locks cycle. This will reset the connection between your keyfob's and vehicle.

Remove the backup key made of metal from your fob. Place it in a secure place. Push the fob's back cover towards the center of it to give it a slight lift, and allow you to remove it. Replace the fob's key with the latest CR2032 battery which you can purchase at our Golden Valley parts section or at local hardware stores and at supermarkets in Minnetonka and St Louis Park.

Keyless Entry

Modern key fobs can provide various advantages, from convenience to security. The fob can be used to open the doors and trunk of your car by pressing a button which transmits radio frequency signal to the receiver inside your vehicle. The system does not come without its drawbacks.

Some thieves have developed devices that can intercept the signals from your keys, and then duplicate them to be used as an "key" for opening and starting your car. You can secure yourself by placing your key fob in a shielded case (also known as Faraday pouches), which limits the distance over which frequencies sent by the fob can be transmitted. These pouches can be found in most auto parts stores for less than PS10.

Some systems also allow you to access the car without pressing the push button. As you approach the handle of the door the car will lock and unlock automatically if your key is in its fob.

Key fobs can also help managers and owners of businesses to exercise greater control. They can authorize specific employees to access specific areas of your building or facility at specific times during shifts. You can even cancel entry access for a lost or fired employee at the pressing of a button. This is a great tool for warehouses or other structures that require greater security.

Convocation

A lot of newer key fobs have hidden functions that can make the life of the car owner significantly easier. For example one CR auto editor once walked out to his Honda Accord and saw all the windows had been automatically opened while it was sitting in his purse at home. This is definitely not ideal especially during a rainstorm or if the car was covered with snow.

The Model 3 key fob is packed with many amazing features. This includes the ability to summon the vehicle and auto-park it by pressing the button. Another cool feature is the panic button which a driver can press during a terrifying situation, like when a burglar is in the home. This can scare off the burglar and notify neighbors, according to an official Tesla spokesperson.

By using a key fob substitute replacing the old battery with a brand new CR 2032 battery (available at local hardware stores and big-box retailers). Reinstall the bottom cover of the key fob and press it firmly until you can hear a click. Once the fob has been activated, you can test its functions by opening and locking your car.

A duplicate key fob is also beneficial as you can hand it to a friend or family member so that they can use the car using their own Driver Profile that displays their preferred settings. This means you don't have to worry about a partner or sibling accidentally altering the mirror's position, climate control settings, or seat positions that you prefer.