On This Page
How to Start a Hyundai with a Dead Key Fob
Starting your Hyundai
- First, if you’re still locked out, click here for help getting inside!
- Second, you can find video help here!
- Finally, if you need or want another manufacturer, click here.
Hyundai uses a number of different ways to start the vehicle if the Smart Key battery is weak or the Smart Key does not work correctly. For a time, the company are migrated all their models to the first method below, but have backtracked a bit in 2026.
If your start battery is still good, we’re going to get you going! Just follow along.
2013 and newer models
The latest models from all three manufacturers — with three exceptions — use a very simple process. Beginning with vehicle updates in the 2013 model year, simply press the Start / Stop ignition button with the Smart Key while depressing the brake to start the vehicle. If this does not work in your model, continue on below for a method that will.
Many of the images you will see on this page are numbered, which is left over from our original organization of the emergency start options.
2026 Ioniq 9
Hyundai took a step back in our opinion in 2026. If the key fob fails in the Ioniq 9, the fob must be dropped onto a spot under the heat and AC controls in front of the center console and to the right (image on the right).
The spot is marked with what we believe is the image of a key.
2026 Palisade
New 2026 Palisade models now feature two possible back-up start locations, but with no clear indication as to which one to use! It is either under the heat/AC controls in the center of the small storage area (right) or the rear cup holder (far right).
In these cases, there is no indication that the spots are actually marked!
Pre-2014 Models
Sonata
Sonata models built prior to 2014 use a slot inside the center console for an emergency start (right). Insert the Smart Key with the key ring side out in the Smart Key holder (the slot), then press the Start / Stop ignition button while depressing the brake. To remove the key fob, press it, then pull.
We made a video of the process here.
Genesis
Genesis models built before 2014, and before Genesis became a separate brand, uses a slot located behind a door above the shifter (right). Insert the Key with the key ring side out and then press the Start / Stop ignition button while depressing the brake.
Again, to remove the Key, press it and then pull it out.
Equus
Older Equus models use a Smart Key holder, which is a slot in the glove box (right). Open the glove box and insert the Key with the key ring facing out and then press the Start / Stop ignition button while depressing the brake.
To remove the Key, press it and then pull it out.
Note: If you have made an attempt to start the vehicle without success, there may be 
residual pressure in the brake system and a new warning light may appear (left) or text message to Step on the Brake. Press the brake pedal very, very hard when trying to start the vehicle again to be sure that the release switch behind the pedal is engaged. Or wait a few minutes and try again.
Video Help
Click here for videos to walk you through the processes.
Models examined include Accent, IONIQ, Ioniq 5, Ioniq 6, Ioniq 9, Kona, Elantra, NEXO, Palisade, Santa Fe, Sonata, Tucson, Veloster and Venue. Model years 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 and 2026.
… Return to Part I, Getting In
——————————————————————-
The information on this website is provided for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 30+ years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s, ME: MS, RPI, NY