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How to Fix a Problem With Your Hyundai i20 Key Fob Hyundai i20 vehicle owners can lock and unlock their cars remotely. They can also start their vehicle ahead of time and check the key fob's functions using an app on their smartphone. Occasionally, the key fob will cease to function. This could be caused by the battery being dead or water damage, or even signal interference. Battery Hyundai has developed the smart key fob for their vehicles that allows you to use a variety of remote functions like locking and unlocking doors, launching your vehicle, and even triggering panic buttons. It's an excellent way to save time and energy for drivers, but can be frustrating when the system doesn't work correctly. There are a few options you can do when your Hyundai i20's main fob isn't working properly. The first step is to check the battery. The majority of smart key fobs are powered by a coin-cell, that can be replaced in a matter of minutes. This is the easiest and most affordable way to fix the issue. You can buy replacement batteries in most stores as well as online. Once you have a new battery open the key fob to make sure the battery is sitting in the correct place and that it's in contact with all connections. Be sure to capture a photograph or take a note of how the old battery was placed in the circuit board prior to removing it. This will allow you to replace the battery the same way. The majority of Hyundai smart key fobs use batteries that are CR2032, which are available in many stores and on the internet. Close your key fob after installing the battery and testing it. Contacts If your Hyundai keyfob suddenly stopped working and you haven't dropped it, there may be a problem with the internal chip. The receiver module inside your car uses radio frequency signals to communicate with the remote control, so when this signal is blocked by nearby transmitters or objects, it may cause the key fob to not function correctly. Think about the Hyundai Digital key system if you're looking to lock, unlock and start your car during your commute in Reno. This advanced keyless system works via an app that you can install on your smartphone. It enables you to share Digital Key access up to three people. This is useful when you're giving someone the opportunity to take a ride or leaving your vehicle for valet services. The most frequent reason for a Hyundai i20 key fob to stop functioning is the battery is dead. It's time to change the battery if yours shows signs of age or has a slow response or no response at any time. While replacing and opening the battery in your Hyundai key fob battery shouldn't be difficult but there are some points to be aware of prior to starting. Make a sketch or note of how the old battery is laid within the circuit board. hyundai car key replacement cost will help you put the new battery in the same place. Water Damage The key fob features rubber seals that protect the chip inside from water. Therefore, if it withstands an accidental splash of water from a washer or even a brief immersion in light rain it's unlikely to be damaged. If you drop it in the ocean or in a pool, the water could penetrate the seals, causing damage to the circuit board. This is an expensive repair. The first step is to dry the key fob completely. It can be done in a variety of ways. It can be placed in a bag with silica packs to absorb the moisture. You can also use rice that is not cooked However, be cautious not to touch it while it's still wet. This could contaminate the internal components. You can also clean the contacts of the circuit board using isopropyl or electronic cleaner. If the chip is fried, it's best to accept you'll have to replace the key fob. It's simple to change the battery on your Hyundai key fob. The procedure is usually not difficult. You can consult an YouTube tutorial or your owner's manual to guide you through the process. It's a good idea to have a spare key fob on hand so that you can continue driving your vehicle while you wait for the key repair to arrive. Diagnostics of a fault It can be difficult to diagnose a problem if your check engine light is flashing and you have a fault code. This is the reason why the diagnostic scanner is commonly called an OBD 2 (or OBD 2 in the UK). They are available in Bluetooth versions which connect to your phone or standard models that come with an OBD 2 reader. One of the most frequent problems with i20s is the throttle position sensor (TPS) develops a fault. This sensor is responsible for measuring the opening angle of the throttle valve. The information is then sent to the control unit and is used to the calculation of the amount of fuel needed. A malfunctioning throttle position sensor could cause a reduction in engine performance, jerky acceleration and RPM variations when driving. Another issue that is common in the i20s is the transmission that is defective. The transmission is a complex part with a variety of gears that connect to transfer power from the engine to wheels. The friction between the gears cause wear and tear that can cause the transmission to fail. Sounds of grinding or clunking as well as the jerky acceleration can be signs of a faulty gearbox. Spark plugs are an additional issue for the i20. Spark plugs that are defective can cause damage to the engine because they do not deliver the right amount of sparks to the cylinders. If they are not checked the damaged spark plug could cause serious and expensive engine damage.