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How to Replace a Lexus Key Fob That Won't Turn On Or Work Correctly It can be quite frustrating when your key fob will not work or will not turn on. There are some simple steps you can follow to fix the problem. First, remove the metal emergency keys from the key fob. Utilize the flat side of a key made from metal to press the cover, then turn it to open. Keyless Entry System The keyless entry system is a great option for anyone who owns a car. They allow you to unlock your car before you even touch a lever or exit the doorway for the passenger. Some of them will even turn on the lights when you get close. Others will open the trunk when carrying groceries or 10 other electronic devices based on proximity. The key fob transmits a radio frequency signal the car's receiver and then sends a response code back to the vehicle. The signal is only effective when the key fob is within a specific range, which is typically 50 feet or less. Some of these systems work in a one-way fashion meaning that the key fob is only capable of locking or unlocking the car, but it is not able to start the engine. Whatever keyless entry system you select It is recommended to have it installed by a professional. A reputable locksmith for cars will make sure the connection is secure and complete, including stripping a small part of each wire to connect it. The manual will explain what wires you must use. A keyless remote entry can also lock the doors if you leave. This is helpful if are forgetful or tend to leave your car locked for too long. Transponder Keys Transponder keys (or transponder chips) are a crucial element in the majority of modern cars. They are embedded into the fobs or keys' heads and include an immobilizer number that is unique to each. When a key is inserted into the ignition lock cylinder and then turned to ON the signal is transmitted through the antenna ring at the top of your car's ignition to the transponder chip. The chip transmits a code-matching response to the antenna ring. The transponder chip deters theft because the key must be inserted correctly and contain the correct code to enable your car turn on. It's also harder to duplicate the keys, making it less likely that someone is able to take your vehicle. A reputable locksmith can create transponder keys which are programmed for your car at a fraction the cost of what you would pay at a car dealership. They can also provide information on the type of key in your possession and how to program it. They may also be able to offer you a replacement for your stolen or lost transponder key. They may also be able to help you with reprogramming the chip in case it has stopped working. Duplicate keys Most people have lost keys at least once in their lives, whether it was their car keys or house keys. If this happens, it's frustrating and inconvenient to find yourself locked out of your home or car. To avoid this, it's important to keep duplicate keys on hand. These duplicates will help you unlock your lock in the event that you ever need to get stuck. Most duplicate keys come with a “do duplicate” message stamped or engraved on the keys. This is a way of letting others know that it's legal to duplicate the key unless you are the owner of it. Keys like this are usually used to open deadbolts, padlocks, and other door locks. These keys are also an excellent tool to keep an eye on which key of the customer is which. 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 only a warning and is not legally binding. However, it could deter some people from attempting to duplicate their key. Many chain hardware shops do not cut keys. However locksmiths are able to duplicate them. In fact, they could be cut on a similar blank to ensure that the duplicate is exact. Battery Replacement If your Lexus keyfob is not working it could need to be reprogrammed in order it can function with the immobilizer feature of the vehicle. You'll need to visit the dealer, or an experienced locksmith who can reprogram the ECU. A locksmith is likely to charge more than a dealership, but they'll save you the burden of having to tow your car there. In addition to the ECU It is also possible that your battery may need to be changed. You'll need to replace your old battery with one that matches 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 the wrong battery it could cause severe damage to the engine as well as other components. Before purchasing a replacement battery, make sure to look over the warranty to determine if it covers the cost. G28 Car Keys is also important to determine whether you need an insurance policy in the event that the battery fails within its coverage period. Also, be aware that auto locksmiths often don't carry the tools needed to code keys, so you'll need to get a dealer or a web-based key programmer visit and program the key for you. It's also important to inform them know what kind of key (chip, intelligent remote, or “push-to-start”) and the year that your car was, and the VIN should you be able to.