Lost Lexus Key Fob? Here's What to Do

If your Lexus key fob battery is dying and you're looking for a solution, it's simple: Buy a new battery CR2032 at an hardware store or big-box retailer. There are also instructions in the owner's manual as well as YouTube videos that describe the process.

However the dealer will charge you a lot to program an entirely new keyless entry ignition system. Here's an easier way:

Battery Replacement

You may need to replace the battery if the key fob doesn't lock or start your Lexus. This is a relatively simple procedure that can be completed at home or at the dealership. It is best to consult your owner's manual before starting. The exact steps vary between models and years.

First, ensure that your hands are dry and clean. The fob's moisture may cause the battery to rust or damage. Press the release button on the back of the key fob in order to open it, and then remove the mechanical key blade (if there is one). Utilize a screwdriver or any other flat tool to pry off the cover plate, and reveal the battery. Remove the battery that was in place, and set a new CR1632 battery in place with its positive side facing upwards. Connect the fob and you're good to go!


This type of battery is available at most hardware stores and auto parts shops and even some locksmiths. However, the cost varies according to the location and the supplier. You can also purchase one from the Parts Department at Shottenkirk Desert Lexus which provides competitive pricing and fast shipping. In addition to key fob batteries, this department offers a wide selection of authentic Lexus accessories that can help you personalize your vehicle. For more details, contact a member of our team today!

Key Replacement

If you've lost the key or it's not working correctly, it may be time to replace it. A replacement key or remote will allow you to access your vehicle. You can buy one from a dealer or automotive locksmith. The key must be programmed in order to work with your Lexus. The cost of this service is contingent on your car model and the kind of key you have (fobs, remotes, intelligent fobs, or regular "push-to-start" keys).

Lexus Smart Keys have radio frequency identification chips that communicate with the car. This allows you to unlock your trunk and doors at the push of one button. The chip can also be used to activate the alarm system and start the car's engine.

A keyfob that is smart or smart will typically last for several years without needing to be replaced. The operation of a smart key or key fob might be affected through repeated use, exposure to heat or low temperatures. The key could also be damaged or dropped.

It can be a frustrating experience when your Lexus keyfob stops working. You can call your local locksmith for assistance, but the process isn't always simple or quick. It could cost you more if you lose your key after hours or during the late at night. To avoid this issue you can get a Lexus Key Replacement Protection plan when you buy your new or certified pre-owned vehicle.

Keyless Entry System Replacement

Lexus fobs are not like traditional car keys. They feature sophisticated hardware that communicates with the vehicle to open or lock doors, or even to start the ignition using a push button. As such, these key fobs are not as simple as standard car keys and may fail to work as intended. If your fob isn't working, there are a couple of options to consider.

The most straightforward solution is to replace the battery. They're usually fairly inexpensive at any hardware store, big-box retailer or even online, and they can be exchanged to make a quick fix. You can follow the instructions in the owner's manual, or even on YouTube.

If resetting G28 Car Keys Solutions doesn't work, you may have an issue that requires more in-depth work or assistance from a professional. Contact your dealer, or an authorized locksmith service to replace fobs and keys for the most effective results. Before you call, make sure you have all your important documents handy including the title certificate, registration card, evidence of insurance and VIN numbers.

You must inform the locksmith or dealer that your Lexus is more than 10 years old. Older vehicles require a special code in order to ensure that the replacement key will work. The car may need to be towed to a dealership or the key coded by an automotive locksmith on site.

Lockout Service

The key fob in your Lexus is equipped with a transponder that communicates directly with your vehicle's computer system. The chip is equipped with rolling codes to prevent unauthorized duplication and makes the key fob more secure than a standard car key without a chip. Based on the type of key you have and the year your car was built, the key fob may be equipped with additional features that require additional programming.

The battery inside your Lexus key fob might need to be replaced. The door locks may still be unlocked if you dispose of the fob. Most hardware stores and electronic retailers sell replacement batteries. You can purchase a new key fob from an authorized Lexus dealer if your key fob features an embedded smart card.

It is easy to replace the battery inside your Lexus key fob. Press the release button on the right side to detach the key blade made of metal. Slide the flathead screwdriver's tip into the space that used to be filled by the mechanical emergency key blade. After taking off the cover plate, remove the battery using the screwdriver and insert the new CR2032 lithium battery.

You can extend the life of the battery in your key fob by keeping it out of electrical appliances that produce magnetic fields. This includes laptops, televisions, cell phone chargers and induction cookers. Do not place the fob in close proximity to metal objects which could create static charges.