The equipment on your particular Tucson
The US-market Hyundai Tucson NX4 2025 manual has separate remote-key and smart-key chapters. Some Smart Key functions depend on equipment. An illustration of a US remote does not establish which functions are fitted to a Tucson in Israel.
Specify petrol, hybrid or plug-in, how you start it and which buttons you use. A similar key photo online cannot replace identification of the vehicle system and checking the particular part.
Buttons work but the handle does not
The US NX4 2025 manual distinguishes a handle button from a touch-sensor handle, where fitted. It also describes possible effects of rain or washing on touch-sensor response. This guidance is limited to the system in that manual.
Mention whether one handle is affected, whether it happens after washing, and whether remote buttons are affected too. The manual also describes a setting that opens only the driver’s door on the first press. Different unlocking behaviour alone does not establish a key fault.
Only the driver’s door unlocks: settings and faultsTwo battery types in one model manual
The US Tucson NX4 2025 manual lists CR2032 in the remote-key chapter and CR2450 in the Smart Key chapter. This is a practical reason to identify the key before buying a battery, even when you know the model name.
These specifications do not cover every Tucson. Confirm against your key and vehicle manual, and keep button batteries away from children. If the remote still fails after replacement, explain what you changed and which functions the vehicle performs.
Lost key or an existing key fault?
For a key that is not detected, report whether its buttons respond and whether another key starts the car. The US NX4 2025 manual also lists detection interference and a discharged vehicle battery as possibilities. No response does not prove the key battery is responsible.
After loss, state how many keys remain and the locking status. If the key is locked inside, describe the request as access to an existing key. Ask about the old key’s status and vehicle-specific options before booking.
Testing the replacement at handover
Agree which operations will be tested: button unlocking and locking, starting detection and handle response where available. Include any additional agreed function. Test both the spare and the previous key that remains in use.
Call mobile vehicle locksmith Key Replacement on +972504307424. Vehicle suitability, job scope and urgent availability are checked before booking. The three-month warranty applies to replacement keys only.
Official information for further reading
Sources refer to the particular versions, years and markets identified. Use the manual appropriate to your own vehicle for operating instructions.