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How to Fix a Problem With Your Hyundai i20 Key Fob Hyundai i20 owners can lock and unlock their vehicles remotely. They can also start their vehicle ahead of time and monitor key fob function using a mobile app on their smartphones. Occasionally the key fob may cease to function. This could be due to the battery being dead or water damage, or even signal interference. Battery Hyundai has developed the smart key fob for their vehicles that enables users to perform a variety of remote functions including locking and unlocking doors, starting your vehicle, and even pressing a panic button. It's a wonderful feature for drivers and helps them save time and effort, however it can be a hassle if the system doesn't function properly. There are several things you can do to fix your Hyundai i20's key fob isn't functioning properly. The first step is to check the battery. Most smart key fobs are powered by a coin-cell battery, that can be replaced within minutes. This is usually the fastest and most affordable method to resolve the issue. You can buy replacement batteries in a variety of stores as well as online. After you have put the new battery and you have it open, check to ensure that the battery is sitting in the correct place and is in contact with all of the connections. Be sure to capture a photograph or take a note of how the old battery was positioned on the circuit board prior to taking it out it. This will allow you to install the new battery in the same way. Most Hyundai smart key fobs have the CR2032 battery, which is available in many stores and on the internet. Close your key fob after installing the battery and testing it. Contacts If your Hyundai key fob stopped working out of the black and white, and you've still not lost it, you could be dealing with a faulty internal chip. The receiver module inside the car uses radio frequency signals to communicate with the remote. If these signals are interrupted by nearby transmitters, or other objects the key fob might not function properly. If you're looking for a smart way to unlock, lock and start your vehicle during your Reno commute, think about the Hyundai Digital Key system. This innovative keyless entry system operates via a smartphone app and allows sharing Digital Key access with up to three other people. This can be useful when giving an individual a ride or when you're leaving your car with valet services. A dead battery is the primary reason for an Hyundai i20's key fob not working. It's time for a new battery if yours shows signs of age, such as slow operation or no response at all. Although opening and replacing the battery in your Hyundai key fob battery isn't difficult but there are a few points to be aware of prior to beginning. Take a photo or make an outline of the way that the old battery is placed within the circuit board. This will enable you to put the new battery in the same place. Water Damage The key fob features rubber seals that protect the chip's electronics from water. Therefore, if it withstands the splash of water from a washer or the brief submersion of rain, it's not likely to be damaged. If you drop it in the ocean or a pool, the water could penetrate the seals, causing damage to the circuit board. This can be a costly repair. The first step is to dry the key fob completely. It can be done in many ways. You can place it in a plastic bag and then cover it with silica gel packets that will suck the moisture out of it. You can also use rice that is not cooked however, be careful not to contact it while it's still damp. This could lead to contamination of the internal components. The use of isopropyl alcohol, or an electronic cleaner can also be helpful in cleaning the contacts on the circuit board. If the chip is fried it's best to accept you'll have to replace the key fob. It's simple to replace the battery in your Hyundai key fob. The process is usually not a hassle. You can follow an YouTube video tutorial to assist you with the process or refer to the owner's manual. It's a great idea to keep a spare key fob so you can drive your vehicle while waiting for your key to be repaired. Diagnostics of a fault It can be difficult to determine a problem if your check engine light is illuminated and you have a fault-code. This is why a diagnostic scanner is often called an OBD 2 (or OBD 2 in the United Kingdom). hyundai santa fe key fob are available in Bluetooth models that connect to your mobile or standard models with an attached reader to the socket. One of the most frequent issues with i20s can be that the throttle position sensor (TPS) develops a fault. The sensor is responsible for measuring the opening angle of the throttle valve. This information is passed to the control unit and is used to the calculation of the amount of fuel required. A problem with the throttle position sensor could cause a reduction in engine performance, jerky acceleration and RPM fluctuations during driving. Transmission problems are another common problem in the i20s. The transmission is a complex component that has many gears which mesh together to transfer the power from the engine. The friction between the gears can cause wear and tear over time, which could cause the transmission to fail. The sound of grinding or clunking and an acceleration that is jerky can indicate a faulty gearbox. The spark plugs inside the i20 are another common problem area. Spark plugs that are defective could cause engine damage due to not sending enough sparks to every cylinder. A damaged spark plug can result in costly and serious engine damage if it is not checked.