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How to Fix a Problem With Your Hyundai i20 Key Fob Hyundai i20 owners can lock and unlock their cars remotely. They can also start the vehicle ahead of time and monitor key fob functions via an app on their smartphone. Sometimes, the key fob will cease to function. This could be caused by an unresponsive battery, water damage, or even signal interference. Battery Hyundai has created a smart key fob that is able to perform various remote functions, like locking and unlocking your doors, starting your vehicle and even triggering the panic button. It's an excellent way to save time and energy for drivers, but it can be a hassle if it doesn't work as intended. If you're experiencing difficulty getting your Hyundai i20 key fob to function correctly there are a few things you can try to solve the issue. The first thing to do is check the battery. The majority of smart key fobs are powered by a coin-cell battery, which can be repaired in a matter of minutes. This is usually the quickest and most affordable method to fix the issue. Replacement batteries are readily available in most stores or online. After you have put the new battery in place and you have it open, check to ensure that the battery is in the right position and that it's in contact with all of the connections. Make sure you capture a photograph or take a note of the way in which the old battery was positioned on the circuit board prior to removing it. This will help you install the new battery in the same manner. The majority of Hyundai smart key fobs are powered by batteries that are CR2032, which are found in many shops and on the internet. Once you have the battery in place, close up your key fob and test it to determine if it's working again. hyundai ix35 replacement key cost If your Hyundai key fob stopped working out of the blue and you haven't dropped it, you could be experiencing a malfunctioning internal chip. The receiver module inside your car uses radio frequency signals to communicate with the remote control, therefore if this signals are being disrupted by nearby transmitters or objects, it may cause the key fob to not function correctly. Consider the Hyundai Digital key system if you want to lock, unlock and start your car during your commute in Reno. The advanced keyless system operates with an app on your smartphone and allows you to share Digital Key access up to three people. This is useful if you give a friend a lift or leaving your vehicle in valet service. A dead battery is the most frequent reason for the Hyundai i20's key fob not functioning. It's time to change the battery if it is showing signs of aging and is slow to operate or no response at all. While replacing the Hyundai keyfob's battery isn't difficult, you must be aware of certain things prior to beginning. Make a sketch or a note about how the old battery is placed within the circuit board. This will enable you to put the new battery in the same spot. Water Damage The rubber seals on the key fob shield the electronic chip from water. So, if it is able to withstand a splash of water from a washing machine, or even a brief immersion in light rain, it's not likely to be damaged. However, if you've dropped it in the ocean or pool, the water may get through the seals and damage the circuit board, which can be costly to repair. The first step is to dry the key fob completely. This can be done in several ways. It can be placed in a plastic bag and then cover it with silica gel bags that will drain the moisture of it. You can also use uncooked rice, but be careful not to be near it while it's still damp. This could cause contamination to the internal components. Using isopropyl alcohol or an electronic cleaner can also be helpful in cleaning the contacts on the circuit board. If, however, the chip is fried, it's likely that you'll require a new key fob. Replacing the battery in a Hyundai key fob is simple and usually not very messy. You can consult an YouTube tutorial or your owner's manual guide you through the process. It's a great idea to keep an extra key fob in case you can use your vehicle while you wait for the repaired key. Diagnostics of a fault It isn't easy to pinpoint a problem if your check engine light is illuminated and you have a fault-code. This is why an OBD diagnostic scanner is usually called an OBD 2 (or OBD 2 in the UK). These are available in Bluetooth models that connect to your phone or standard models with a reader attached to the socket. One of the most common issues with i20s can be that the throttle position sensor (TPS) is damaged. This sensor is responsible for determining the opening angle of the throttle valve. This information is transmitted to the control unit that helps calculate the amount of fuel required. A damaged throttle sensor can cause sudden acceleration, RPM fluctuations and decreased engine performance. Transmission problems are a common issue for i20s. The transmission is a complicated component with many gears that work together to transfer power from the engine to wheels. The friction between the gears can cause wear over time which can cause the transmission to fail. The sound of grinding or clunking and an acceleration that is jerky can indicate an unreliable gearbox. The spark plugs inside the i20 are a different common issue area. The problem with defective spark plugs is that they can harm the engine by not delivering the right amount of sparks to the cylinders. A damaged spark plug can cause costly and serious engine damage if not properly checked.