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Reasons Why Your Nissan Qashqai Key Fob Won't Work The Qashqai's bigger dimensions give it a distinct SUV feel. Its ride on 19-inch alloy wheels in Ti and STL versions can also be a bit firm. The front tyres of the Qashqai could also lose grip on rough surfaces, and its CVT can occasionally display wrist-flexing torque steering. It is usually due to an unresponsive battery that can be replaced in just a few minutes. Make sure the new battery is of the same size, voltage and specifications. Water Damage One of the most frequent reasons a Nissan key fob displays the “key ID is incorrect” message is due to water damage. The key fob is fitted with rubber seals that protect the electronic chip inside. However, prolonged exposure to moisture could cause it to stop functioning properly. This is often the case when you drop your key fob into the ocean or a swimming pools, but it could occur if it becomes wet due to rain or soapy hands. If G28 has been exposed to water over an extended period of time then you might need to clean it using isopropyl or electronic cleaner. It could also require to be taken to a professional to repair or replace it. If your key fob needs to be replaced, it's quite simple to do. Make sure you've got the correct multipack (CR2032 3V). Unlock the front and rear cases using a flathead screwdriver. You'll need to take out the clips for retaining metal and remove the battery that was in place, and then replace it with the new one. Reassemble the fob and replace the mechanical key. Make sure it's working properly. If it does not then you'll need to take it to an Nissan dealer or professional auto locksmith to repair the chip. The chip is not usually damaged by water and therefore should not be too expensive. Dead Coin Battery Another reason why the reason your Nissan Qashqai key fob may not work is that the coin battery has gone dead. These batteries last for 3-5 years, but they may fail over time when the fob is frequently dropped. You can replace the battery, however, make sure it's the same voltage and same size as the first. If you replace the battery, it could cause the key to be assigned a different key ID. This could prevent it from being connected to your vehicle. The best method to replace the battery of a coin on the Nissan Qashqai key fob is by prying open the fob with an incredibly small screwdriver with a flat head. The screwdriver should be inserted into an angled notch on the bottom of the fob and move it around to separate the two parts of the key fob. Remove the old CR2025 battery and replace it with a brand new one, noting the position of the old one within the fob. Before putting the new battery in, make sure there isn't any water damage or dirt on the terminals. If not clean the terminals using some isopropyl ethanol. Make sure that the pole cables are connected correctly. They should be connected to the negative and the positive poles of your battery. Fault Diagnosis If your Nissan Qashqai's keys fob stops functioning after exposure to clean tap or rain water it could be a sign there is a problem with the internal chip. Changing the battery won't fix the issue, and you'll need to purchase a new key fob. If the key fob didn't work after dropping it, it's likely that the chip inside was damaged. If you clean the chip using isopropyl alcohol and paper towel and then replace it with the key fob, you will typically get it working again. Key ID Incorrect is a typical error that can be seen on the dashboard of your vehicle. The car is unable to recognize the key fob, which is why it won't allow the vehicle to start. The problem can be caused by many things such as water damage, undetectable issues in the key fob's circuitry or RFID interference. If the 12 volt battery in your key fob is inactive or is not supplying enough electric power, it will stop working. This could affect your Nissan Qashqai's keyless system, central locking and the capability to start the engine with the key fob. If you can't unlock or lock the door by hand, you should check the batteries inside your key fob to be sure they are in good shape. You could also try re-inserting the battery to reset the transmitter. Reprogramming If the key fob has not been submerged in salt water and is unable to return to life after a quick rinse with clean water. You could also try cleaning the electronic chip with isopropyl alcohol or an electronic cleaner. If none of these work, you may have to replace the key fob. If your Nissan Intelligent Key still does not work, it might be a problem connecting between it and the vehicle. To reconnect it, begin by turning the key into the ignition, without turning on the car. Repeat this process until the hazard light flashes two times. After that, turn the car off and take out the keys. Next, then open the fob compartment in your vehicle. It is usually located on a door jamb, or driver's door handle. Find the small “program” button and press it. You should hear a chime when the process is completed. It's time to test your Intelligent Key to the test. You must stand a certain distance away from the vehicle, then click all of the buttons on it. If the lights flash or the horn sounds, then the key is successfully connected to the Nissan. You can also test it close to the Nissan.