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How to Replace a Lexus Key Fob That Won't Turn On Or Work Correctly If you have keys that don't operate or turn on it can be very frustrating. There are simple steps you can take to resolve the problem. The first step is to take the metal emergency key from the key fob. Make use of the flat end of a key made of metal to press the cover, then twist it open. Keyless Entry System The keyless entry system is a wonderful benefit for any car owner. You can unlock your car as you even walk out of the door of the passenger. Some even turn on lights when you get close, open the trunk when you've loaded it with groceries, or turn on 10 other electronic gadgets dependent on your proximity. The key fob transmits an audio frequency signal to the receiver inside the car and it then transmits a response code back to the vehicle. The signal will only be valid when the key fob is within a specific range, typically 50 feet or less. Some of these systems are single-way, meaning the key fob can secure or unlock the vehicle, but cannot start the engine. Whatever keyless entry system you select it is recommended to have it professionally installed. A reliable locksmith in the automotive sector can assure that the connection is secure and secure, even if it means stripping a small section of each wire. The manual that comes with the instruction manual will give you the precise wires to use and it is vital to use only the ones required. Another benefit of remotes with keyless access is that it can also lock your doors automatically when you step away from the car. This is helpful if are prone to forgetfulness or tend to leave your car unlocked for too long. Transponder Keys Transponder keys (or transponder chips) are an important feature of modern automobiles. They are embedded into the fobs or keys' heads and come with a unique immobilizer code. The antenna ring on the top of the ignition transmits signals to the transponder chip when the key is inserted and switched ON. The chip transmits a response back to the antenna ring that matches your car's code. Transponder chips are a deterrent to theft, since the keys must be correctly inserted with the correct code to turn the car on. It's also harder to duplicate the keys, making it less likely that someone is able to steal your vehicle. A reputable locksmith can make transponder key copies that can be programmed to match your vehicle at less than the price you'd spend at a car dealer. They can also tell you the type of key in your possession and how to program it. They might also be able offer you an alternative to your lost or stolen transponder key. They can even help you reprogramme your chip if it's stopped functioning. Duplicate Keys The majority of people have lost keys at one point or another in their lives whether it was car keys or their home keys. When this occurs, it can be painful and uncomfortable to be locked out of your home or vehicle. To avoid this situation it's crucial to keep duplicate keys on hand. The duplicate keys will help you unlock your lock in the event that you ever need to get stuck. The majority of duplicate keys have an “do duplicate” message stamped or engraved on the keys. This is a way of letting the public that it is not legal to duplicate keys unless you're the owner of the key. Keys are used to open padlocks and deadbolts, as well with other door locks. They also provide an excellent method of keeping track of which key belongs to the particular customer. Many people believe that the “do not duplicate” message on the key makes it more secure. However, this isn't true. The message engraved on the key is a warning only and is not legally binding. However, it may dissuade some people from trying to have their key duplicated. A majority of chain hardware stores do not cut keys. However locksmiths can easily replicate them. They can be cut on a blank that resembles like the original, to ensure precision. Battery Replacement If your Lexus key fob isn't functioning, it's likely to have to be programmed to work with the immobilizer system of your vehicle. lexus key replacement is necessary to contact an expert locksmith or go to your dealer to change the ECU. In general, locksmiths will cost more than a dealership, however they'll also avoid the hassle of towing your car there. In addition to the ECU it's possible that your battery needs to be changed. You'll have to replace the old battery with 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 an insufficient battery it could cause significant damage to the engine as well as other components. Make sure to check the warranty prior to buy a new battery to see if the cost is covered. You should also consider whether you require a warranty in case the battery fails during its warranty period. Also, be aware that automotive locksmiths aren't always equipped with the tools required to code keys, so you'll have to find a dealer or online key programmer come and program the key for you. It is also important to let them know what kind of key you used (chip or intelligent fob remote “push to start”) as well as the year of your car, and the VIN number if possible.