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How to Replace a Lexus Key Fob That Won't Turn On Or Work Correctly If you have a key fob that will not operate or turn on, it can be frustrating. There are lexus key replacement can take to resolve the issue. The first step is to remove the emergency key in metal 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 benefit for any car owner. They allow you to unlock your vehicle before you even touch the handle or open the doorway for the passenger. Some of them even turn on the lights as you approach and open the trunk when you've loaded it with groceries, or activate 10 other electronic gadgets depending on the proximity of your vehicle. The key fob sends an audio-frequency signal to the receiver inside the car. The receiver sends back an appropriate response code to the vehicle. The signal will only be valid when the key fob is within a specific area, usually 50 feet or less. Some of these systems are one-way. This means that the key fob will secure or unlock the vehicle, but it cannot start the engine. No matter what type of keyless entry system that you choose It is recommended to have it installed by a professional. A good automotive locksmith will make sure the connection is solid and secure, as well as stripping a small amount of each wire before connecting it. The manual will show you which wires to use. A remote with a keyless entry feature can also lock the doors if you leave. This is a great feature if are not organized or tend to leave your car unlocked for too long. Transponder Keys Transponder keys (or transponder chips) are a crucial feature in modern vehicles. These chips are embedded in the head of keys or fobs and include an unique immobilizer code. When a key is inserted 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 your transponder chip. The chip sends an appropriate code-matching response to the antenna ring. Transponder chips deter theft, since the keys must be inserted correctly with the correct code to turn the car on. The keys are also much harder to duplicate, making it less likely that someone will take your car. A reputable locksmith can create transponder keys which are programmed for your car at a fraction of what you'd pay at an auto dealership. They can also help you understand the type of key in your possession and how to program it. They might even be able to give you an alternative to the transponder that was stolen or lost key. They may also be able to assist you reprogramme your chip in case it's stopped working. Duplicate Keys Most people have lost keys at some point in their lives, whether it was their car keys or their house keys. It can be very frustrating to be locked out of your car or home. To avoid this issue it's essential to have duplicate keys in your possession. These duplicate keys can be used to open your lock and allow you to get inside in the event that you're in a jam. Most duplicate keys are engraved or stamped with a “do not duplicate” message. This is a way to let the public that it is not legal to copy the key unless you're the owner of it. These kinds of keys are commonly used for deadbolts, padlocks, and other door locks. They also provide great for keeping the track of which keys belong to the particular customer. Many people believe that the “do not duplicate” message on keys makes them more secure. However, this is not the case. The engraved message is only a warning and is not legally binding. It could discourage some from trying to duplicate their keys. Most chain hardware stores will not cut these keys. However locksmiths can easily duplicate the keys. In fact, they could be cut with a lookalike blank to ensure that the duplicate is correct. Battery Replacement If your Lexus key fob has stopped working, it will probably need to be reprogrammed to work with the vehicle's immobilizer system. You'll have to go to the dealer or a locksmith who is qualified to reprogram the ECU. Locksmiths usually charge more than the dealership, however you'll be able to avoid the hassle of towing your car. Apart from the ECU, your battery may need to be replaced as well. You'll be required to replace the previous battery with a new one that matches the specifications of your vehicle. This includes the physical dimensions, terminal configuration, and cold cranking amps (or amp-hour ratings). If you install the wrong battery it could cause significant damage to the engine and other components. If you are considering purchasing a replacement battery, make sure to look over the warranty to determine if it covers the cost. You may also want to think about whether you'll require an insurance policy if the battery fails during its warranty period. Keep in mind that many auto locksmiths don't have the tools required to code keys. So, you'll need to hire a dealer to program your key or make use of an online key programmer. It's also essential to inform them know the type of key you want (chip or intelligent remote, or “push-to-start”), the year that your car was, and the VIN in the event that you can.