Reasons Why Your Nissan Qashqai Key Fob Won't Work
The Qashqai has a distinctly SUV-like feel due to its larger dimensions. Moreover, the 19-inch wheels on Ti and ST-L models can be a bit firm at times. The front tyres of Qashqai may also lose traction on rough surfaces, and the CVT may occasionally display a wrist-flexing torque steering.
It is usually caused by an inoperable coin battery, which can be easily repaired in a matter of minutes. Make sure the replacement battery is of the same size, voltage and specifications.
Water Damage
One of the most common reasons a Nissan key fob displays the "key ID is not correct" message is due to water damage. The key fob has rubber seals that protect the electronic chip inside, but prolonged exposure to moisture can cause it not to function properly. This is typically the case in the event that you've dropped your key fob in the ocean or a swimming pools, but it could happen when it's wet due to rain or soapy hands.
If your key fob was exposed to water over the course of a long time then you might need to clean it using isopropyl and electronic cleaner. It could also require to be sent to a specialist for repair or replacement.

If your key fob is in need to be replaced, it is an easy procedure. Make sure you have the right multipack (CR2032 3V). Then, open the front and back cases using the small flathead screwdriver. Remove the metal clips, take out the battery that was in place and replace it. Reassemble the fob and replace the mechanical key. Make sure it's working correctly. If not then you'll need to bring it to a local Nissan dealer or a professional auto locksmith to replace the chip in the key. Fortunately, the chip is not often damaged by water exposure, so this should not be too expensive.
G28CarKeys may not function is that the battery in the coin has gone dead. The batteries typically last between 3-5 years but can go bad with time, particularly if the fob is frequently dropped. You can replace the battery but ensure it's the same voltage and same size as the previous. If you use a new battery, it may cause the key to be assigned a wrong key ID. This could prevent it from being linked to your vehicle.
The most effective method to replace the battery of a coin on a Nissan Qashqai key fob is by removing the fob with an small screwdriver that has a flat head. The screwdriver should be put into a small cut on the bottom of the key fob. Gently twist the screwdriver to split the two halves. Then, take out the old CR2025 button cell battery and insert the new one after confirming its location on the fob.
Check the terminals for any water damage or dirt before installing the new battery. If this is the case clean the terminals using the smallest amount of isopropylethanol. Make sure that the pole cables are connected correctly. They must be connected to the positive and negative poles of your battery.
Diagnostics of a fault
If your Nissan Qashqai's key fob stops working after being exposed to water that is clean from a tap or rain it could indicate that there's an issue with the internal chip. The battery replacement won't fix this, and you'll have to buy the new key fob. If you dropped the key fob on the ground and it stopped working right away it is likely due to the damage to the internal chip. If you clean the chip using isopropyl ethanol and paper towel and then put it back in the key fob, you can typically get it working again.
One common error you may notice on the dashboard of your car is "Key ID Incorrect." This means that the vehicle cannot recognize the key fob and will not allow it to start the engine. This problem could be caused in various ways, including water damage, problems that are undetectable in the key fob's circuitry or RFID interference.
If the 12 volt battery in your key fob dead or not providing enough electrical current, it will stop working. This can affect your Nissan Qashqai's remote keyless system central locking, as well as the ability to start the engine with the key fob. If you are unable to lock or unlock the door by hand you must check the batteries on your key fob to make sure they are in good shape. Try re-inserting the battery to reset the transmitter.
Reprogramming
If the key fob had not been submerged in salt water the key fob should be able to be revived after a quick rinse with clean water. You can also clean the electronic chip by using isopropyl or electronic cleaner. If none of these works then it might be time to replace the entire key fob with a new one.
If your Nissan Intelligent Key still does not work, it could be a connection problem between it and your vehicle. To relink it, start by turning the key in the ignition, but not starting the car. Continue to do this until the hazard light flashes twice. Turn the vehicle off and take the keys out.
Then, open the fob compartment in your vehicle. It's usually on the door jamb or driver's door handle. Find the small button marked "program" and press it. You should hear a chime after the process has been completed.
It's time to put your Intelligent Key to the test. Stand some distance away from the vehicle and click all of the buttons on the key. If the lights flash and the horn sounds this means that the key has successfully connected to the Nissan. You can also try testing it close to the Nissan.