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How to Replace a Lexus Key Fob That Won't Turn On Or Work Correctly When you have a key fob that will not function or turn on it can be a frustrating experience. There are some simple steps you can follow to solve the issue. First, remove the metal emergency keys from the key fob. Utilize the flat side of a key in metal to press the cover down and make it open. Keyless Entry System The keyless entry system is a great option for anyone who owns a car. You can unlock your car as you touch the handle or leave the passenger's door. Some of them even turn on the lights when you approach or open the trunk, when you've loaded it with groceries, or turn on 10 other electronic gadgets dependent on your proximity. The key fob sends an audio frequency signal to the car's receiver, which in turn sends a response code back to the vehicle. The signal is only effective when the key fob is within a specified range, which is usually 50 feet or less. Certain systems work in a one-way manner, which means that the key fob will only be capable of locking or unlocking the car, but not start the engine. It is recommended that you have your keyless entry system professionally installed regardless of the model. A good automotive locksmith will ensure that the connection is safe and secure, even if that requires stripping a tiny portion of each wire. The manual will inform you which wires you need to use. A keyless remote entry can also lock the doors if you walk away. This is a great feature if are prone to forgetfulness or tend to leave the car unlocked for too long. Transponder Keys Transponder keys or transponder chips are a typical feature in modern vehicles. These chips are built into the head of a key or fob and include a unique code that is connected to your vehicle's immobilizer system. When the key is put into the ignition lock cylinder and turned to ON, a signal is sent from the antenna ring that is located on the top of your car's ignition to your transponder chip. The chip sends a code-matching response to the antenna ring. The use of a transponder chip can deter theft because keys must be placed correctly and have the right code to allow your car to turn on. They are also more difficult to duplicate, making it less likely for someone to steal your vehicle. A reliable locksmith can create transponder keys that are programmed for your car at a fraction of what you'd pay at a car dealership. They can also help you determine what kind of key you have and how to program it to your car. They may even be able to give you an alternative for your stolen or lost transponder key. They can even help you re-programme your chip if it's stopped working. Duplicate keys If it's your car key or house key, most people have lost their keys at some time in their lives. If this occurs, it can be frustrating and inconvenient to find yourself locked out of your vehicle or home. It is important to have two keys available in order to avoid this situation. The duplicate keys will help you unlock your lock in the event that you ever become stuck. Most duplicate keys come with a “do duplicate” message stamped or engraved on the keys. This is a way to let the public that it is not legal to copy the key unless the owner of it. lexus car key G28 Car Keys are used for padlocks and deadbolts, as well for other door locks. They are also a great tool for keeping the track of which key for a customer is which. Many people believe that the “do duplicate” message on the keyboard makes it more secure. This isn't the case. The message that is engraved on the keys is an indication of caution and doesn't have any legal value. It could discourage some from trying to duplicate their key. A majority of chain hardware stores do not cut keys. However locksmiths can easily duplicate the keys. They can be cut on a blank that resembles similar to the original key to ensure precision. Battery Replacement If your Lexus key fob has stopped functioning, it's likely that it will need to be reprogrammed in order to work with the vehicle's immobilizer. You'll have to visit the dealer or an experienced locksmith who can reprogram the ECU. Locksmiths typically charge more than the dealership, however you'll be able to avoid the headache of towing your vehicle. In addition to the ECU there is a chance that your battery needs to be changed. You'll have to replace your old battery with one that's compatible with the specifications of your vehicle. This includes the physical dimensions, terminal configuration, and amp-hour rating or cold cranking rating. The wrong battery installation can cause severe damage to your engine and other components. Before you purchase a replacement battery, make sure to check the warranty to see if it covers the cost. You'll also want to consider whether you need an assurance in case the battery fails within its coverage period. Also, keep in mind that a lot of automotive locksmiths do not have the tools needed to code keys. Therefore, you'll require a professional to program your key or make use of an online key programmer. It's also essential to inform them about the kind of key you used (chip or intelligent fob remote “push to start”), the year of your car, as well as the VIN number, if you can.