Hyundai Radio Code: How to Read Your Serial and Unlock the Radio
What the code prompt means, where the serial hides on each Hyundai unit, and how to enter the code without triggering the lockout.
Published 19 September 2026 Updated: Updated 19 September 2026
Short answer A Hyundai radio code is calculated from the serial number printed on the radio itself, never from the VIN. Read the serial off the unit label, type it with the HYUNDAI: prefix, and the code arrives instantly.
Why Your Hyundai Is Asking for a Code
Hyundai factory radios lock themselves the moment they lose power. Disconnect or replace the battery, jump start the car, blow the radio fuse or move the unit to another vehicle and the display comes back asking for a code instead of playing. This is the anti-theft feature working as designed: the radio is useless in another car until the right code is entered. The code is tied to that one radio, so a replacement or second-hand unit needs its own code rather than the one from the radio it replaced.
The Three Hyundai Radio Families We Decode
Almost every factory Hyundai head unit falls into one of three families. Which one you have decides which number you read off the label, so it is worth identifying before you start.
- Hyundai EMP3 covers the EMP300 through EMP350 range and is the most common family. The serial is printed on the top label next to "SERIAL No.", under the second barcode, and usually starts MP, MC, MT, MD, HM, BQ, TQ, BTJ or BTC. A typical one reads MP01060807.
- Hyundai Autonet units carry an M0 number along the bottom edge of the label, such as M0674077020. The same family also appears as a model number like HN445JMEUABCA, or a serial beginning UAU, G7U, UBTE, FSV or CXNB. All of those are accepted.
- Hyundai MP3 covers the FD-01 and the MP3-03A, MP3-03G, MP3-05G, MP3-05TU and MP3-36TU units. These carry a GS1 barcode and you need only the last four digits of it.
Hyundai EMP3 - the most common family
Hyundai Autonet HN445
Autonet HN445 - the M0 number at the bottom
Some MP3 units show the serial on screen
Finding the Serial Number on Your Hyundai Radio
EMP3 and Autonet units do not show the serial on screen, so the radio has to come out of the dash far enough to read the label on top of the case. The trim in front of the unit usually lifts off without disconnecting anything.
- Ease the plastic trim around the radio away with a flat plastic tool, working around the edge rather than pulling from one corner.
- Undo the screws or release clips holding the unit in the dash. Most Hyundai units use four screws.
- Slide the radio forward far enough to see the top of the case. You do not need to unplug the loom to read the label.
- Find the white or silver sticker on the top or side. The serial is the number next to "SERIAL No." or along the bottom edge, not the part number.
Some MP3 units do show the serial on screen. Hold the preset buttons as your manual describes and the number appears in the display, in which case the radio can stay where it is.
Removal walkthroughs
i30 (2012-2014) - release keys and trim
Tucson - trim panel and unit removal
ix35 (2012-2014) - radio out of the dash
The same pattern covers the whole range: trim off, four screws or clips, then slide the unit forward far enough to read the label on top. Nothing needs unplugging.
Reading the GS1 Barcode on FD-01 and MP3 Units
This is where most people go wrong. The barcode label on FD-01 and MP3 units prints two bracketed sections and only the second one matters. A typical label reads: (01) 1 880 912179 001 7 (21) 11 07 0795.
The (01) section is the part number. It is identical on every FD-01 and MP3 unit ever built, so it can never identify your radio. Ignore it completely.
The (21) section is the serial. Take only the last four digits from it. In the example above that is 0795, so you would enter HYUNDAI:0795.
An FD-01 label with the four digits you need marked
The HYUNDAI: Prefix
Whatever your label shows, put HYUNDAI: in front of it. That one prefix is accepted for every supported Hyundai unit, so you do not have to work out which family you have before typing. For example: HYUNDAI:MP01060807 for an EMP3, HYUNDAI:M0674077020 for an Autonet, HYUNDAI:UAU9404233S for an Autonet label serial, or HYUNDAI:0795 for an MP3.
Entering the Code on a Hyundai
Hyundai radios take the code on the preset buttons rather than a keypad. Each press steps that digit up by one.
- Switch the radio on so the code prompt appears in the display.
- Press preset button 1 until the first digit is right, then preset 2 for the second digit, and so on through preset 4.
- Check all four digits against the code we sent before confirming. A mistyped digit costs you an hour.
- Confirm the entry the way your unit asks, usually by holding a preset button or pressing menu or enter.
Entering the code with presets 1 to 4
WAIT, Code Error and the Lockout Timer
Enter the wrong code and the radio locks for a period, showing WAIT or a similar message. Leave the unit powered with the ignition on and let the timer run down, which normally takes about an hour, then try again. Do not keep guessing: every wrong attempt restarts the timer, and on some units repeated failures lengthen the wait considerably.
If the code we supplied is rejected on a correctly read serial, contact us rather than retrying. We refund in full if our code does not work.
Can I Get a Hyundai Radio Code From the VIN?
No. A Hyundai radio code comes from the radio serial number, not the VIN. Renault and Dacia are the rare makes where a VIN lookup works; Hyundai is not one of them. Any service claiming to produce a Hyundai code from your registration or VIN alone cannot deliver a working code, because the number that generates it is printed on the radio.
Is There a Free Hyundai Radio Code?
No free tool produces a working Hyundai code. The code is calculated from the individual radio serial, so it cannot be looked up in a published list. Sites offering free Hyundai codes either fail outright or return a code belonging to a different unit, which then burns an attempt and starts the lockout timer. Our Hyundai codes are $19.99 with a full refund if the code does not work.
Hyundai Radio Code FAQ
Related guides
- Hyundai radio code by serial number - enter your serial and get the code instantly.
- How to find your car radio serial number - the general guide across all makes.
- Radio code from VIN explained - why only Renault and Dacia work that way.
- Radio says WAIT 30 minutes - what the lockout timer means and how to clear it.
- How car radio anti-theft codes work - the background on why the code exists.