How to Do a Lexus Key Fob Replacement

There are a few things every Lexus owner needs to know. Your vehicle will eventually require a new key, whether you are using a conventional key to turn the ignition on or an intelligent push-to start.

It is simple to replace the battery on your key fob by visiting a hardware store, big-box retailer or locksmith. Always ensure that the locksmith has the ability to make replacement keys for your specific model.

How to Replace the Battery

If the indicator light on the LED is dim and you are unable to use Smart Access or push-button starting it's time to replace the Lexus key fob. The process is easy and can be carried out in the comfort of your Guaynabo-area home. Follow these easy steps provided by Shottenkirk Desert Lexus to get back on the road swiftly.

Make sure that your hands and area of work are dry. Moisture can cause the new battery to become rusty. Use flatheads to open the cover of the key fob. If you want to avoid scratches, wrap the edge of your screwdriver in a piece of tape. Once the mechanical key is removed and the battery is removed, you can remove the battery you have been using and replace it with a new one. Make sure to insert the new battery with the positive (+) side facing up. Then, reinstall the electronic key module and snap the cover back into its place.

If you require assistance with your key fob the service technicians at Shottenkirk Desert Lexus are available to assist. We are also proud to offer Key Replacement Protection when you purchase or lease the Lexus vehicle. This warranty covers fobs and replacement keys as well as the programming required for synchronizing them with your vehicle's security system. Click HERE to learn more about this important feature or contact our customer support team.

How do you activate the battery-saving mode?

A Lexus keyfob is a sophisticated piece of technology which allows you to lock or unlock your doors, and then start your ignition with a push button. It contains hardware which sends signals to the vehicle, e.g. to automatically roll down your windows. The battery inside your Lexus' key fob will eventually go out. It is essential to replace the battery as quickly as you can in order to avoid it from compromising the function.

If you don't plan to use your Lexus Key Fob for several weeks, you can activate the battery-saving mode. This will minimize the drain on your battery. To turn it on you need to press and hold the LOCK button while pressing the UNLOCK button two times. The indicator on the electronic will blink four times, and your Lexus keyfob is now on battery saving mode. Press lost lexus keys G28 on the key fob to restart Smart Access and push-button starting.

It's simple to replace the battery inside your Lexus Key Fob without the need for special tools. To reduce the chance of rusting, make sure your hands and the new battery are completely dry. Then, look for the small button on the back of your key fob that allows you to release the emergency key blade stored inside. Take the mechanical key out by pressing the release button. Slide the new battery into place with its plus-side facing up.

How do you switch off your key fob

The key fob may appear to be simple, but it's packed with advanced technology. It allows you to lock and unlock doors as well as open the trunk of your 2021 Lexus IS without ever having to remove the key from your pocket. It also has hidden functions that may surprise you.

For instance, the key fob's panic button can help you locate your car in a parking garage, says Consumer Reports. The enthralling sound can also deter thieves, according to RepairPal. Keep one in your wallet or purse in case of an emergency.

Consumer Reports says that some cars allow you to start your car using a remote fobs during cold weather. Simply hold the lock button on the key fob for 10 seconds to activate this feature. (A note of caution: This feature may not work with all vehicles, so be sure to read the owner's manual.)

You can replace the fob of your key or car keys by contacting an auto locksmith or a dealer. It's crucial to get the right help to ensure that the new key or fob is properly programmed and functions exactly like the original. It is essential to ensure that the locksmith you hire has the correct key blanks and knows how to program the correct keys for your vehicle.

How to replace the Key Blade

Today's modern key fobs are more powerful than ever before. With the touch of the button, they're able to unlock or lock and even start automobiles. This technology isn't free. The cost of purchasing a replacement fob for a key costs anywhere from between $200 and $500, and having it programmed by a dealer may cost even more. The battery is easily and inexpensively replaced in most fobs.


To replace the battery inside a Lexus key fob, first employ a flathead screwdriver unlock the fob. If you'd like to avoid scratching the plastic, cover the end of the screwdriver with tape before using it. If there is an electronic key module that covers the battery, take it off before taking out the old one. Put a new CR2032 in its place and place it with the positive side facing up. Re-attach the electronic module on, and then replace the cover for the key fob.

There are some things you can do to extend the lifespan of your key fob's battery, such as keeping it three feet away from electrical appliances that produce magnetic fields, such as laptops, televisions, cell phones and battery chargers. The battery-saving mode can be activated by pressing the LOCK and UNLOCK buttons twice while holding the LOCK button. The electronic indicator on the key will flash four times to confirm that the battery-saving mode has been activated. Press any button on your key fob to restart using the Smart Access System or Push Button Start.