Why does the smart key sometimes fail? Is it because the battery is dead or something else?

How to start a car when the key fob battery is dead?

Why does the oil pan of the Smart 453 make a humming sound?

Does anyone else with a Smart 453 have a gasoline smell inside the car? [what]

How do I change the battery for the 2022 model car key? What type of battery does it use?

The car battery is dead, how to lock the car doors? Currently, the mechanical key can only lock the driver's door.

Why does the car often fail to unlock or start after changing the battery?

Why does the car sometimes not respond when starting, even though the battery and dashboard lights are normal?

The battery of the JETOUR X95 is dead, and the remote key buttons are not working. After jump-starting the car, the emergency braking system activated. The car can drive normally, but the dashboard is only partially functional, as the idle speed and speed are not displayed. I tried to reprogram the keys because I have four keys, and the previously working key is not functioning anymore. However, I'm unable to successfully reprogram the key, and now the car won't start. Has anyone encountered this issue before? How was it resolved? This is the 2020 JETOUR X95 dual-clutch version.

The car is over three years old, and recently the key isn't working well. Could it be that the battery is dead?

Does your key run out of battery every two years?