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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 their vehicle before time and monitor key fob functions using a mobile app on their smartphone. Occasionally the key fob might stop working. It could be due a dead battery water damage, or signal interference. Battery Hyundai has created a smart key fob that can be used to perform a variety of remote functions, such as locking and unlocking your doors, starting your vehicle and even triggering the panic button. It's an excellent way to cut down on time and energy for drivers, but it can be frustrating when the system doesn't function properly. If you're struggling to get your Hyundai i20 key fob to function properly There are a variety of things you can do to solve the issue. The first step is to examine the battery. Most smart key fobs use an internal battery that can be replaced in a matter of minutes. This is usually the quickest and most affordable method to resolve the issue. Replacement batteries are readily available in all stores and online. Once you have a new battery in place then re-open the key fob to ensure that the battery is sitting in the right position and that it's making contact with all connections. Take a photo or note the position of the old battery within the circuit before taking it out. This will enable you to install the new battery the same way. Most Hyundai smart keyfobs have CR2032 batteries, which are sold in most stores or on the internet. Close your key fob after installing the battery and then test it. Contacts If your Hyundai key fob suddenly stopped functioning and you haven't dropped it, there might be a problem with the internal chip. The receiver module in your car uses a radio frequency signal to communicate with the remote control, therefore if this signals are being blocked by nearby transmitters or objects, it may cause the key fob's functionality to cease correctly. If you're looking for a reliable method to lock, unlock, and start your car during your Reno commute, look into the Hyundai Digital Key system. This advanced keyless entry system works with a smartphone app and allows you to share Digital Key access with up to three other people. This can be useful for giving an individual a ride or when you are leaving your car using valet services. A dead battery is the main cause of the Hyundai i20's key fob not working. It's time to change the battery if the one you have is showing signs of aging and is slow to operate or no response at all. Although replacing the Hyundai keyfob battery is not difficult, you should be aware of some things prior to beginning. Make a sketch or an outline of the way that the old battery is placed within the circuit board. This will allow you to place the new battery in the same spot. Water Damage The key fob features rubber seals to protect the chip's electronics from water. So, if it is able to withstand an accidental splash of water from a washing machine, or a brief submersion in light rain, it's not likely to be damaged. If you drop it into the ocean or in a pool it could be damaged by the water. the seals, damaging the circuit board. This is a costly repair. The first step is drying the key fob thoroughly. This can be done in several ways. You can put it in a bag along with silica packets to absorb the moisture. You can also use uncooked rice, but be careful not to contact it while it's still damp. This could cause contamination to the internal components. Using isopropyl alcohol or an electronic cleaner could also be helpful in cleaning the contacts on the circuit board. However, if the chip is fried, it's likely that you'll require a replacement key fob. Replacing the battery on a Hyundai key fob is easy and usually not messy. You can follow an YouTube video tutorial to help you with the process or refer to the owner's manual. It's a good idea to keep an extra key fob on hand so you can drive your vehicle while waiting for your key to be repaired. Fault Diagnosis It isn't easy to pinpoint problems if your check engine light comes on and you have a fault-code. This is the reason why a diagnostic scanner is often called an OBD 2 (or OBD 2 in the UK). These are available in Bluetooth models which connect to your phone or standard models that have readers that are connected to the socket. The throttle position sensor (TPS) is located in the i20, can fail. This sensor is accountable to determine the opening angle of throttle valve. This information is transmitted to the control unit and contributes to the calculation of the amount of fuel needed. A problem with the throttle position sensor could result in lower engine performance, jerky acceleration and RPM variations when driving. Transmission issues are another frequent issue with i20s. The transmission is a complex component with many gears that connect to transfer power from the engine to the wheels. In time the friction between the gears can lead to transmission failure. Sounds of grinding or clunking as well as jerky acceleration are symptoms of the gearbox being damaged. Spark plugs are a different aspect to be concerned about for the i20. A defective plug could cause engine damage due to not giving enough sparks to each cylinder. keyless start damaged spark plug could result in costly and serious engine damage if left unchecked.