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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 won't work or will not turn on. There are a few steps you can do to fix the issue. The first step is to remove the metal emergency key from the key fob. Use the flat end of a key made of metal to press on the cover and twist it open. Keyless Entry System The keyless entry system is a great option for anyone who owns a car. locksmith lexus keys The Keylab can unlock your car as you even walk out of the door for passengers. Some of them even turn on the lights as you approach, open the trunk when you've loaded it with groceries, or activate 10 other electronic devices in response to your proximity. The key fob sends a radio frequency signal to the receiver inside the car and it then transmits an answer code back to the vehicle. The signal will only be valid if the key fob is within a specified distance, typically 50 feet or less. Some of these systems work in a one-way way this means that the key fob is capable of locking or unlocking the car, but it is not able to start the engine. It is recommended that you have your keyless entry system installed by a professional regardless of the model. A good automotive locksmith will make sure the connection is safe and complete, which includes stripping a small part of each wire in order to connect it. The manual will explain which wires to use. Another benefit of keyless remote access is that it could also lock your doors automatically when you walk away from the car. This is a great feature if are forgetful or have a tendency to leave the car unlocked for too long. Transponder Keys Transponder keys, also known as transponder chips are a common feature of modern automobiles. These chips are built into the head of a key or fob and contain a unique code that is connected to your vehicle's immobilizer system. The antenna ring at top of the ignition transmits an alert to the transponder chip whenever the key is inserted and turned ON. The chip then sends a response back to the antenna ring that matches the car's code. The use of a transponder chip discourages theft because the key has to be inserted correctly and must have the correct code to enable your car turn on. It's also more difficult to make a duplicate of the keys, which makes it less likely that someone can take your vehicle. A reputable locksmith can create transponder keys that can be programed to match the car you own at a fraction of the cost that you pay at a car dealership. They can also tell you what type of key is in your possession and how to program it. They may also be able offer you a replacement for your stolen or lost transponder key. They may also assist you to with reprogramming the chip in case it has stopped working. Duplicate keys No matter if they're your car keys or your house key, a majority of people have lost their keys at some point in their lives. It's frustrating to be locked out of your home or vehicle. To avoid this, it's important to keep duplicate keys in your possession. These duplicates will help you open your lock if you ever become stuck. The majority of duplicate keys are stamped or engraved with the “do not duplicate” message. This is a way to alert others know that it's illegal to copy a key unless the owner of the key is present. Keys are used for padlocks and deadbolts as for other door locks. These keys are also great for keeping track of which key belonging to a customer is which. Many people think that the “do duplicate” message on a keyboard makes it more secure. However, this isn't the case. The engraved message is merely a warning and is not legally binding. However, it might dissuade some people from trying to duplicate their key. Many chain hardware stores will refuse to cut these keys, however a locksmith can easily duplicate them. In fact, they could be cut on a similar 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 immobilizer system of your vehicle. You'll have to go to the dealer or an experienced locksmith who can reprogram the ECU. Locksmiths usually charge more than the dealership, however you'll avoid the hassle of towing your car. In addition to the ECU it's possible that your battery needs to be changed. You'll need to replace your old battery with one that's compatible with the specifications of your car. This includes the physical dimensions, terminal configuration and cold cranking amps (or amp-hour rating). If you install the wrong battery it could cause significant damage to the engine as well as other components. Before purchasing a new battery, be sure to check the warranty to see whether it covers the cost. Also, you should consider whether you require an assurance in case the battery fails during its coverage period. Also, be aware that automotive locksmiths typically don't have the tools needed to code keys, and you'll have to get a dealer or an online key programmer to program the key for you. It is also important to let them know what type of key you had (chip or intelligent fob remote “push to start”), the year of your vehicle, and the VIN number, if you can.