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How to Fix a Problem With Your Hyundai i20 Key FobHyundai I20 owners can lock and unlock their vehicles remotely. They can also start their vehicle in advance and monitor the functions of their key fob by using a mobile application on their mobile.However, sometimes the key fob might stop working due to some reason. This could be due to a dead battery or water damage, or even signal interference.BatteryHyundai has developed the smart key fob for their vehicles that allows users to perform a variety of remote-controlled functions, such as locking and unlocking doors, starting your vehicle, and even triggering an emergency button. It's an excellent way to save time and energy for drivers, but it can be frustrating when the system doesn't work correctly. There are a few options you can do in the event that your Hyundai i20's primary fob isn't functioning properly.The first step is to check the battery. The majority of smart key fobs have the coin cell battery which can be replaced in just a few minutes. This is the fastest and most affordable way to resolve your issue. Replacement batteries are available in most stores or online. Re-open the keyfob after installing the new battery to make sure that the battery is in the right position and is in contact with all connections.Make sure you take a photo or make note of where the old battery was positioned in the circuit board prior removing it. This will help you install the new battery the same way. The majority of Hyundai smart keyfobs use the CR2032 batteries, available in most shops or online. Once you have the battery installed close your key fob, and then test it to verify if it's functioning again.ContactsIf your Hyundai key fob stopped working out of the blue and you haven't dropped it, you may have a problem with an internal chip. The receiver module in your car uses radio frequency signals to communicate with the remote control, so it is possible that the signals are interfered with by nearby transmitters or objects, it could cause the key fob to cease functioning properly.If you're looking to find a clever way to unlock, lock and start your vehicle during your Reno commute, you should consider the Hyundai Digital Key system. This innovative keyless entry system is operated via an app on your smartphone that allows sharing Digital Key access with up to three other people. This is a great feature when you're giving a friend an escort or leaving your vehicle for valet services.The most common reason for the Hyundai i20 key fob not to function is an inactive battery. It's time to change the battery if it shows signs of age and is slow to operate or no response at any time. While opening and replacing your Hyundai key fob battery shouldn't be difficult but there are some points to be aware of prior to starting. Take a photo or take note of how the old battery is placed in the circuit board. This will enable you to place the new battery in the same place.Water DamageThe rubber seals on the key fob guard the electronic chip from water. So, if it is able to withstand a splash of water from a washer or the brief submersion of rain, it's unlikely to get damaged. If you dropped it in a pool or ocean the water could get into the seals, causing damage to the circuit board. This is an expensive repair.The first step is to dry the key fob thoroughly. You can do this in many ways. You can place it in a bag along with silica packets to absorb the moisture. You can also use uncooked rice Be careful not to contact it while it's still damp. This could lead to contamination of its internal components.Using isopropyl alcohol or an electronic cleaner may also be helpful in cleaning the contacts on the circuit board. If the chip is fried then it's probably best to accept that you'll need a replacement key fob.It is simple to replace the battery in your Hyundai key fob. The process is typically not messy. You can follow a YouTube tutorial or your owner's manual guide you through the process. It's a good idea keep an extra key fob to ensure you can drive your vehicle while you wait for your key to be repaired.TroubleshootingIt can be difficult to determine an issue if your check engine light is flashing and you have a fault code. This is the reason why an OBD diagnostic scanner is usually known as an OBD 2 (or OBD 2 in the UK). They are available in Bluetooth versions which connect to your phone or standard models that have an OBD 2 reader that is connected to the socket.The throttle position sensor (TPS) is located within the i20, may become defective. This sensor is accountable to measure the opening angle of the throttle valve. The information is then sent to an electronic control unit, which contributes to the calculation for the amount of fuel needed. A malfunctioning throttle position sensor will result in reduced engine performance, jerky acceleration and RPM fluctuations during driving.Another issue common to the i20s is a faulty transmission. The transmission is a complex component with a variety of gears that are connected to transfer power from the engine. Over time, the friction between the gears could cause the transmission to suffer failure. hyundai key fob replacement of a faulty transmission include clunking, grinding noises and rapid acceleration that is jerky.The spark plugs on the i20 are a second common problem area. The problem with the plugs is that they can cause engine damage through not giving enough sparks to each cylinder. A damaged spark plug could cause costly and serious engine damage if not properly checked.