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How to Fix a Problem With Your Hyundai i20 Key Fob Hyundai i20 owners can to lock and unlock their cars remotely. They can also start their vehicle in advance and track key-fob functions through an app for their smartphone. Sometimes, the key fob will cease to function. This could be due to the battery being dead or water damage, or even signal interference. Battery Hyundai has created a smart key fob that is able to perform a variety of remote functions like locking and unlocking your doors, starting your car and even triggering the panic button. It's an ideal way to save time and energy for drivers, however it can be frustrating when the system isn't working properly. If you're experiencing difficulty getting your Hyundai i20 key fob to work properly There are a variety of things you can try to fix the problem. The first step is checking the battery. Most smart key fobs make use of an internal battery that is replaced in minutes. This is usually the fastest and most affordable method to fix the problem. Replacement batteries are readily available in many stores or online. Once you have a new battery in place, re-open the key fob to make sure the battery is in the correct position and that it's in contact with all connections. Take a picture or note the location of the battery that was removed from the circuit before you remove it. This will allow you to replace the battery the same way. The majority of Hyundai smart key fobs utilize CR2032 batteries, which can be found in most stores or on the internet. Close your key fob after you have installed the battery and test it. Contacts If your Hyundai key fob stopped working from 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 blocked by nearby transmitters or objects, it can cause the key fob to not function properly. You should consider the Hyundai Digital Key system if you're looking for a way to lock, unlock, and start your vehicle during your commute in Reno. This advanced keyless entry system operates via an app for smartphones and lets you share Digital Key access with up three other people. This is useful if you're giving a friend an escort or leaving your vehicle for valet services. A dead battery is the primary cause of an Hyundai i20's key fob not working. If yours is showing signs of dying, like slow operation or not responding at all, it's time to replace the battery. Although replacing and opening your Hyundai key fob battery isn't a big deal, there are a few points to be aware of prior to beginning. Take a picture or make notes of how the old battery is laid in the circuit board. This will enable you to put the new battery in the same location. Water Damage The rubber seals on the key fob shield the chip from water. If it is able to withstand a short splash from a washing machine or an unintentional dip in light rain, it is unlikely to be damaged. If you've dropped it into the pool or in the ocean, the water can penetrate the seals and cause damage to the circuit board, which is expensive to repair. The first step is drying the key fob thoroughly. You can do this in many ways. It can be placed in a plastic container with silica gel bags that will suck the moisture out of it. You can also use uncooked rice but it's important not to touch the key fob while it's still damp as it could cause contamination to the internal components. You can also clean the contacts of the circuit board with isopropyl or electronic cleaner. If, however, the chip is fried then it's likely that you'll require a replacement key fob. It is simple to change the battery on your Hyundai key fob. The process is typically simple. You can follow an YouTube video tutorial to help you through the process or consult the owner's manual. It's a good idea to have an extra key fob in your side so that you can continue driving your car while you wait for the replacement key to arrive. Troubleshooting It can be difficult to determine problems if your check engine light is on and you have a fault-code. This is why the diagnostic scanner is typically called an OBD 2 (or OBD 2 in the United Kingdom). These are available in Bluetooth models 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), which is located in the i20, could become defective. G28 is responsible to measure the opening angle of the throttle valve. This information is sent to the control unit and is used to the calculation of the amount of fuel needed. A malfunctioning throttle sensor could cause rapid acceleration that is jerky, fluctuations in RPM and a reduction in engine performance. Another problem that is frequently found in the i20s is a faulty transmission. The transmission is a complicated component that has many gears that are connected to transfer power from the engine. Over time friction between gears can cause the transmission's failure. Signs of a malfunctioning transmission include clunking or grinding noises and an abrupt acceleration. The spark plugs inside the i20 are another common problem area. A defective spark plug can damage the engine by not delivering the right amount of sparks to the cylinders. A damaged spark plug could cause expensive and serious engine damage if it is not checked.