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How to Fix a Problem With Your Hyundai i20 Key Fob Hyundai i20 owners are able to lock and unlock their vehicles remotely. They can also start their vehicle ahead of time and monitor key fob function by using a mobile application on their mobile. However, occasionally the key fob will stop functioning due to a reason. It could be due to a dead battery or water damage, or signal interference. Battery Hyundai has created the smart key fob for their vehicles, which allows users to perform a variety of remote-controlled functions, such as locking and unlocking doors, launching your vehicle and triggering a panic button. It's an excellent way to cut down on time and energy for drivers, however it can be a hassle if it doesn't work as intended. There are a few things you can do to fix your Hyundai i20's key fob isn't working properly. The first thing to do is to check the battery. The majority of smart key fobs are powered by a coin-cell, which can be replaced in just a few minutes. This is the fastest and cheapest way to fix your problem. Batteries for replacement are available at most stores or online. After you have put the new battery open the key fob to make sure the battery is sitting in the proper position and that it's in contact with all connections. Make sure to take a photo or make note of where the previous battery was placed on the circuit board prior removing it. This will allow you to install the new battery in the same way. Most Hyundai smart keyfobs have CR2032 batteries, which can be found in most stores or on the internet. Once you have the battery in place close your key fob, and then test it to determine if it's functioning again. hyundai ix35 replacement key cost If your Hyundai key fob has stopped working completely out of the blue and you haven't dropped it, you could be dealing with a defective internal chip. The receiver module inside your vehicle uses a radio frequency signal to communicate with the remote control, therefore it is possible that the signals are blocked by nearby transmitters or objects, it might cause the key fob to cease functioning properly. If you're looking for an efficient method to lock, unlock and start your car during your Reno commute, think about the Hyundai Digital Key system. The advanced keyless system operates with an app on your smartphone. It allows you to share Digital Key access up to three people. This can be helpful when giving a friend a ride or when you are leaving your car using valet services. The most frequent reason for the Hyundai i20 key fob not to function is a dead battery. If yours is displaying signs of dying, like slow operation or not responding at all, it's time to replace the battery. While the process of replacing and opening your Hyundai key fob battery isn't too difficult however there are a few things you should know before beginning. Make a sketch or notes of how the old battery is placed on the circuit board. This will help you put the new battery in the same location. Water Damage The rubber seals on the key fob shield the chip from water. Therefore, if it withstands the splash of water from a washing machine, or even a brief immersion in light rain it's unlikely to be damaged. If you drop it in the ocean or pool, the water can penetrate the seals and cause damage to the circuit board, which can be expensive to repair. The first step is drying the key fob thoroughly. This can be done in many ways. It can be placed in a plastic container with silica gel packets which will draw the moisture out of it. You can also cook rice uncooked However, be cautious not to contact it while it's still damp. This could lead to contamination of its internal components. Utilizing isopropyl alcohol or an electronic cleaner could also help in cleaning the contacts on the circuit board. If, however, the chip is fried then it's best to accept that you'll require a replacement key fob. Replacing the battery on the Hyundai key fob is simple and typically not a big mess. You can follow an YouTube tutorial video to help you along the way or refer to the owner's manual. It's always a good idea keep an extra key fob at your side so that you can continue driving your vehicle while waiting for the replacement key to arrive. Diagnosis of a Fault If your check engine light comes on and a fault code is present it may be difficult to pinpoint the issue without the use of a diagnostic scanner, often referred to as an OBD 2. They are available in Bluetooth models that connect to your phone or standard models that have readers that are connected to the socket. One of the most frequent issues with i20s can be that the throttle position sensor (TPS) is damaged. This sensor is responsible for measuring the opening angle of the throttle valve. This information is transmitted to the control unit and contributes to the calculation of the amount of fuel needed. A malfunctioning throttle sensor will cause jerky acceleration, RPM fluctuations and decreased engine performance. Transmission problems are a common issue for the i20s. The transmission is a complicated part with a variety of gears that interlock to transfer power from the engine to the wheels. The friction between the gears leads to wear and tear over time, which could cause the transmission to fail. Symptoms of a faulty transmission include clunking, grinding noises and rapid acceleration that is jerky. Spark plugs are yet another aspect to be concerned about for the i20. The problem with the plugs is that they could cause engine damage due to not sending enough sparks to every cylinder. If unchecked the damaged spark plug can result in severe and costly engine damage.