How to Replace a Lexus Key Fob That Won't Turn On Or Work Correctly
It can be very frustrating when your key fob doesn't function or it won't turn on. There are simple steps you can take to fix the issue.
First take off the emergency metal keys from the key fob. Use the flat edge of a key in metal to press the cover down and make it open.
Keyless Entry System
The keyless entry system is a great convenience for any car owner. You can lock your car before you even leave the door of the passenger. Some of them even turn on the lights as you approach or open the trunk if you have it loaded with groceries, or turn on 10 other electronic accessories in response to your proximity.
The key fob sends a radio frequency signal the car's receiver and then sends a response code back to the vehicle. The signal will only be valid when the key fob is within a certain range, typically 50 feet or less. Some of these systems are single-way, meaning the key fob can be used to lock or unlock the vehicle, but cannot start the engine.
Whatever keyless entry system you choose it is recommended to have it professionally installed. A professional locksmith in the automotive industry will make sure the connection is solid and secure, as well as stripping a small portion of each wire to join it. The instructions manual will show you the specific wires to use and it is essential that you only use ones needed.
Another benefit of keyless remote access is that it could also lock your doors automatically when you walk away from your car. This is helpful if are not organized or have a tendency to leave the car unlocked for too long.
Transponder Keys
Transponder keys, also known as transponder chips are an aplenty feature in modern vehicles. The chips are incorporated into the fobs' heads or the head of the keys and include a unique immobilizer code. When the key is fitted into the ignition lock cylinder, and then turned to ON, a signal is sent from the antenna ring that is located on the top of your car's ignition to the transponder chip. The chip transmits an encoding response to the antenna ring.
The transponder chip deters theft because the keys must be put in correctly and contain the correct code to enable your car turn on. It's also much more difficult to duplicate these keys, so it's less likely that someone is able to take your car.
A reputable locksmith can produce transponder keys that are programmed to match your vehicle at only a fraction of the price that you would have to pay at a car dealership. They can also help you understand what type of key is in your possession and how to program it. They might also be able to offer you a replacement for the transponder that was stolen or lost key. They can also help you reprogramme your chip if it's stopped working.
Duplicate Keys
Many people have lost keys at one point or another in their lives regardless of whether it was their car keys or house keys. It can be a hassle to be locked out of your house or car. It's important to have duplicate keys available in order to avoid this problem. These duplicates will assist you to open your lock should you ever find yourself stuck.
Most duplicate keys come with a "do duplicate" message that is stamped or engraved on them. This is to signal know that it is not legal to duplicate a key unless the owner of the key is present. These kinds of keys are often used for padlocks, deadbolts and other door locks. They also provide great for keeping track of which keys belong to the particular customer.
Many people believe that the "do not duplicate" message on a key makes it more secure. However, this is not true. The engraved message is merely a warning and does not carry any legal weight. However, it could dissuade some people from trying to duplicate their key. Many chain hardware stores refuse to cut these keys, but a locksmith can easily duplicate the keys. In fact, they can be cut with a lookalike blank to ensure that the duplicate is correct.
Battery Replacement
If your Lexus key fob isn't functioning, it's likely to need to be reprogrammed in order to work with the vehicle's immobilizer. You'll need to contact an locksmith or a dealer to change the ECU. Locksmiths typically cost more than the dealership, however you'll avoid the headache of towing your vehicle.
Aside from the ECU your battery may need to be replaced also. You'll need to replace the old battery with one that's compatible with the specifications of your vehicle. This includes the physical dimensions, terminal configuration, as well as cold cranking amps (or amp-hour rating). If you install a defective battery it could cause severe damage to the engine and other components.
Verify the warranty prior to you purchase a brand new battery to see if the cost is covered. You might also want to think about whether you'll need a warranty if the battery fails within the warranty period. In addition, you should keep in mind that car locksmiths aren't always equipped with the necessary tools to program keys, and you'll have to either have a dealer or online key programmer come in and program the key for you. Also, The Key Lab to let them know the kind of key you used (chip smart fob, intelligent fob remote "push to start") as well as the year of your vehicle, and the VIN number if it is possible.