Reasons Why Your Nissan Qashqai Key Fob Won't Work
The Qashqai's greater dimensions give it a distinct SUV feel. Its 19-inch alloy wheels on Ti and STL versions can also be firm. The front tyres of the Qashqai can lose grip on rough surfaces, and its CVT can occasionally display wrist-flexing torque steer.
This is usually the result of a dead battery, which can be replaced in just a few minutes. Make sure the new battery is of the same size, voltage and specifications.

Water Damage
Water damage is among the most frequent causes for the Nissan keyfob to display the "key ID is incorrect" message. The key fob has rubber seals that protect the chip inside, but long-term exposure to moisture could cause it not to function properly. It is common to observe this happen if your key fob was dropped into the ocean or in a pool. But it can also happen when it gets wet from rain or soapy hands.
If your key fob was exposed to water over the course of a long time it is possible to clean it using isopropyl or electronic cleaner. Alternatively, it might need to be taken to an expert to repair or replace it.
If your key fob does need to be replaced the process is easy. First, make sure that you have a multipack of the right battery (CR2032 3V). Then open the back and front cases with the help of a small screwdriver. It is necessary to remove the clips that hold the metal together and pull out the battery that was in place, and then replace it with the new one. After reassembling the fob, put the mechanical key back into place and check that it functions as intended. If it doesn't then you'll have to take it to a Nissan dealer or a professional auto locksmith to repair the chip. The chip is typically not damaged by water and isn't too costly.
Dead Coin Battery
Another reason that your Nissan Qashqai key fob may not function is that the battery for the coin is dead. The batteries typically last for 3-5 years, but they are susceptible to becoming depleted over time, especially when the fob is dropped frequently. It is possible to replace the battery with a new one but be sure it's the same voltage and size as the original. If you choose to use another battery, it may cause the key to have an incorrect key ID, which could prevent it from paired with your vehicle.
The best way to replace the battery in the Nissan Qashqai key fob is by removing the key fob using a small flat head screwdriver. The screwdriver should be inserted into a small notch at the bottom of your key fob. Make sure to gently twist the screwdriver to split the two halves. Then, take out the old CR2025 button cell battery and insert a new one after noting its position in the fob.
Before putting the new battery into place ensure that there is no dirt or water damage to the terminals. If not clean the terminals using small amounts of isopropyl alcohol. Make sure that the pole cables are properly connected. They should be connected both the negative and the positive poles of your battery.
Diagnostics of a fault
If your Nissan Qashqai's key fob stops working after exposure to water that is clean from a tap or rain it could be a sign there is an issue with the internal chip. You'll need a new keyfob if you can't fix the problem by replacing the battery. If the key fob didn't work after you dropped it, it is likely that the chip inside was damaged. If you clean the chip with isopropyl ethanol and paper towel and then replace it with the key fob, it is possible to generally get it working.
A common error that you will see on the dashboard of your car is "Key ID Incorrect." The car is unable to recognize the key fob and thus won't allow the car to start. This can happen in numerous ways, including water damage, problems that are undetectable in the circuitry of the key fob or RFID interference.
The key fob will not function in the event that the 12 volt batteries are dead or do not provide sufficient electric current. This could affect the remote keyless system and central locking of your Nissan Qashqai, as well as hindering you from starting the engine using the key fob (if equipped with Intelligent Key). Check the batteries in the key fob in case you are in a position to lock or unlock your door by hand. You could also try replacing the battery to reset your transmitter.
Reprogramming
If the key fob is not been submerged in salt water, it should be able to come back to life after a quick wash with clean water. You can also clean the electronic chip by using isopropyl or electronic cleaner. If none of these methods work, you may have to replace the key fob.
If your Nissan Intelligent Key still does not function, there could be a connection issue between it and your vehicle. To reconnect nissan replacement keys , start by turning the key into the ignition, but not starting the car. Continue to do this until you see the hazard lights flash twice. After that, turn the car off and take away the keys.
Then, you need to open the fob compartment of your vehicle. It's usually located in a door jamb, on the handle of the driver's side, or under an armrest. Find the small "program" button and press it. Once the process is completed you will hear an audible sound.
It's time to test your Intelligent Key to the test. Set your feet a distance from the car, and hit all the buttons on the key. If the lights flash, or the horn sounds, then the key is successfully connected to the Nissan. You can also try testing it in close proximity.