It is a possibility that the key fob itself is defective. Old or loose wiring, water damage, or programming issues prevent the car from locking and unlocking. Contact a certified locksmith to reprogram the key to the vehicle.
How do you start a Hyundai with a dead key fob?
Why is my Hyundai Sonata saying key not detected?
Hyundai Smart Key Not Detected
Something as simple as a dead battery in your smart key might be the problem. After you replace the battery, you’ll be able to determine if that was the issue.
What do I do if my Hyundai smart key is not detected? – Related Questions
How do I get my car to recognize my key?
Insert the key into the ignition, and turn it to the on position. Don’t turn on the engine, only the electronics. Leave the key in this position for 10 minutes and 30 seconds, and then turn it off. Turn the key back on, and wait for additional 10 minutes and 30 seconds before turning it off again.
Can I start my Hyundai Sonata with a dead key fob?
How do I reset my Hyundai car key?
Use your key to turn your Hyundai to the “ACC” (accessory) position on your ignition. Hold the “open” or “unlock” button on the key fob until your vehicle’s light flashes. Congratulations! Your key fob is now programmed to your vehicle.
How do I start my Hyundai Sonata without the key?
What does the key not in vehicle warning light mean?
This only applies to vehicles that are equipped with a keyless entry system. This light will come on if the key has been removed from the vehicle while the engine was running. Ensure the key is located inside the vehicle.
Will a dead car battery cause my key fob not to work as I Cannot unlock my car door?
The majority of cars now have remote central locking, however, with a flat or dead battery this won’t work and you will be forced to use the key to open the car doors. This doesn’t necessarily mean that you need a new car battery. It could be that you accidentally left a light on and the battery is just flat.
This usually happens because of low batteries, but shock can also cause the fob to lose its pairing. Most remotes can be reset, so check your car’s user manual for the resetting sequence. If resetting fails to solve the problem, the fob will need to be reprogrammed.
How do I reset my key fob after replacing the battery?
How do I know if my key fob battery is low?
The transmitter loses its range when the fob battery becomes weaker.
Other signals include:
If your key is not giving out any signal.
If you have to press the button repeatedly before your vehicle accepts the signal.
If your key remote is inconsistent or unreliable.
How much does it cost to replace key fob battery?
Key Fob Battery Replacement
Generally, these batteries cost $10 or less, though some fobs require two batteries. Battery specialist shops and dealers will often replace the battery for free since it only takes a moment or two.
How long do key fob batteries normally last?
Typically, a car fob battery should last between three and four years. Additionally, there are a number of signs that will tell you when your fob battery is dying. The first sign is reduced signal strength. Most modern fobs can send a signal to your vehicle from up to 50 feet away.
How often do you need to replace key fob battery?
For most car key fobs, the battery life is three to four years with normal use, Freeman says.
Do you have to reset your key fob when you change the battery?
For your remote key fob to work properly, it has to be connected to a receiver in the vehicle. When the battery in the fob is replaced, it can sometimes interfere with the paired connection between key and car, in which case you’ll need to reset it.