How to Open a Hyundai with a Dead Key Fob
- First, if you are already inside, click here for help getting started!
- Second, you can find video help here!
- Finally, if you need or want another manufacturer, click here.
Retrieving the mechanical key
Retrieving the mechanical keyHyundai has used a flip key key fob since 2015 and they remain in use today (2025) in some models. The mechanical key is found by pressing the chrome button on the end opposite the key ring. The mechanical key is released and remains attached to the fob.
To use the most common Hyundai key fobs, press and hold the release button at the key ring end of the remote control or ‘clicker’ and pull the key ring to remove mechanical key. Use the key to unlock the driver’s door. They too remain in limited use today (2025).
Newer version key fobs are available that look very similar and operate in the same way, with one primary exceptions, found next.
The exception come in the form of key fobs with the mechanical release on the back, which. Hyundai began using in 2019 (right). Push the button in order to release the mechanical key.
If a key hole is visible, use the key to unlock the driver’s door.
With the introduction of the Ionic 6 in 2022, Hyundai began 
supplying a new key fob and separate mechanical key shown to the right. This fob has spread to other models as well. To use the mechanical key, a protective cover must be removed and its handle rotated down.
In our opinion, this development is a prescription for disaster, as the mechanical keys can easily be lost or simply left behind, so by all means activate the additional unlock features described below!
Hidden Keyholes
Two Piece Door Handles
Starting with the 2014 Hyundai Genesis, (prior to the new independent Genesis line, which debuted in 2017), the manufacturer adopted the hidden keyhole 
trick. Several other Hyundai models have been added since, namely the Santa Fe, in 2024, and Venue. These models all feature a two-piece door handle. As shown in the image to the left, press the mechanical key into the slot found under the cover at the back of the driver’s door handle (1) and pull forward and up by hand (2).
Pulling the cap while holding some upward pressure will work best. There is a black button in the slot that is being pushed up with the key in this move and the cap is immediately to move!
A “hybrid” of this was introduced in 2020 in the Sonata. By 2024, it is found in the Elantra, Santa Cruz, and Tucson. The mechanical key is again slipped into a slot beneath the back of the door handle and pushed upwards. Now however, a small cover, seen in blue to the left, is slid to the side and out of the way. This should be done when the mechanical key is still inserted and pushed upward. The keyhole is then revealed.
The redesign of the Kona brings with it a new and odd door two-piece handle, as seen to the left. It still features a cap that hides the key hole, which must be removed. It looks like the others, but to get at the key hole, lift the door handle and hold it in the open position. Slip the mechanical key into the open slot in the cap from behind it and rotate the cap upwards. It will come free, exposing the key hole.
And yes one way or another you must pull a piece of your car off, but its ok! The cover will come off exposing the keyhole.
One Piece Door Handles
In 2019, a very different hidden key hole style was introduced in the Hyundai Santa Fe (removed in 2024), the new Palisade model a year later and the Elantra in 2021. The handle for all intents and purposes is one piece, but a small piece of horizontal trim located just behind the black entry button (arrow) is removable. Pull the handle outward. This exposes another small black button just behind the handle (2, below). Look at the handle from behind to find it.
Push the button inwards using the mechanical key. This releases the trim piece that can be swung away exposing the keyhole. The key can then be turned to unlock the car. Pull the key out before opening the door to avoid damaging the door handle.
We have a video of the process on this page.
Afterwards, the cover can be pressed back on, but your immediate concern is getting into your car.
Ionic, Ionic 5 and Ionic 6 vehicles feature a flush door handle. A push on the front of the handle will rotate the rear part outward. Then pull the handle out as far as it will go. In all vehicles except the Nexo, the key hole is immediately visible (left). The mechanical key can be inserted and turned to unlock the vehicle.
In the Nexo, a plug protects the key hole, likely from water and debris. Use the mechanical key to pry the plug away (first image left) and then insert the key to unlock the car.
Digital Unlock Options
Hyundai vehicles that include a separate mechanical key include two digital options and a facial recognition option. Digital options include a pre-registered card key and a smart phone app on a registered smart phone. The card key and app can also start the car. However, facial recognition will only open the vehicle, so the key fob, card key or smart phone app will be needed to start the car.
Place the registered smart phone or card key against the pad for two seconds to unlock the driver’s door and for four seconds to unlock all the doors.
Facial recognition is accomplished using a camera mounted in the pillar behind the driver’s door. Again, this will only allow entry and other means will be needed to start the car, so this is of limited value.
However, given that the mechanical key is supplied separately and can be far too easily misplaced, we highly recommend following the instructions in the owner’s manual to activate both the smart phone and facial recognition features as back up entry options and to keep the card key with you at all times.
Also, check our videos for additional help.
Continue to Part II, Getting Started …
——————————————————————-
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.
These posts are 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.
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 25 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 College, ME: MS, Rensselaer Polytechnic Institute, NY