How to Start a Hyundai Car When the Key Fob Battery is Dead?
3 Answers
Modern Hyundai car key fob battery is dead to start the car method is: press the button on the key, remove the mechanical key, insert the keyhole can. Take the 2020 Hyundai Verna as an example, which belongs to a compact car with body dimensions of: length 4300mm, width 1705mm, height 1460mm, wheelbase 2570mm, and fuel tank capacity 43l. The 2020 Hyundai Verna features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.4L naturally aspirated engine producing maximum power of 95PS (70kW) and peak torque of 132.4Nm, mated to a 5-speed manual transmission.
Hey buddy, dead car key batteries are super common. Just the other day, my Hyundai Elantra had the same issue. First, flip your key fob over - there's a hidden mechanical key release on the side. Use your fingernail to pop out the small metal key. On the driver's door handle, you'll find a plastic cover. Pry it open with the key tip to reveal the lock cylinder. Insert the key and turn clockwise to open the door. Once seated in the driver's seat, don't panic. Here's the crucial part: Press the dead key fob directly against the start button (keep it touching), while stepping on the brake pedal with your other foot. Hold for about 5 seconds until the car detects the chip, then you can start the engine. After this temporary fix, I drove straight to the auto parts market - spent just 10 yuan on a new button battery and solved the problem immediately.
Last week when dropping my daughter off at school, I encountered a key malfunction – fellow long-time Hyundai owners know this drill. Here's the backup method: First, extract the mechanical key blade from the fob to unlock the door (pry open the small cover beneath the door handle with the key). Once inside, don't press the brake pedal – instead, hold the start button for 6 seconds to enter diagnostic mode. Then flip the key fob upside down and place it flat inside the storage compartment under the steering wheel (the RFID detection zone is located here), ensuring the back of the key touches the bottom groove. Now press the brake and hit the start button – the engine system will automatically read the chip signal to start. This trick has worked flawlessly on our 8-year-old Santa Fe. Pro tip: always keep a spare CR2032 battery in your car.
