Can't Find Your Radio S/N? Follow These Steps for Honda Odyssey 2019
The initial step is to find and write down the radio's serial num.
Depending on the radio unit fitted in your 2019 Odyssey, the serial can usually be found either through the display menu or by checking the label on the radio itself.
Follow the steps below to identify your serial the right way.
2019 Honda Odyssey factory radios
For 2019 the 5th-gen Odyssey carries over the 2018 Display Audio lineup with minor software refinements. Trim still drives screen size and feature set.
- LX - retains the 5-inch non-touch color display, 7-speaker / 235-watt audio, Bluetooth and USB. No CarPlay or Android Auto.
- EX / EX-L - 8-inch Display Audio touchscreen with Apple CarPlay, Android Auto, HondaLink, HD Radio and SiriusXM.
- EX-L Navi / RES - adds Honda Satellite-Linked Navigation and the 10.2-inch overhead Rear Entertainment System with Blu-ray and HDMI input.
- Touring - 8-inch Display Audio with navigation, RES, and an upgraded premium audio package.
- Elite - 11-speaker / 550-watt premium audio with subwoofer, plus CabinWatch and CabinTalk fully integrated into the Display Audio screen.
From EX upward, the 8-inch head unit uses a 5-digit anti-theft radio code that must be re-entered after any battery disconnect.
Screen-Based Serial Lookup Method
The method for 2019 Honda Odyssey is this:
The 2019 Honda Odyssey may feature Honda's Display Audio touchscreen (8" depending on trim) or a standard non-touchscreen radio. Both types support serial number display via the 1+6 button method:
- Turn ignition to ON. Let the radio to turn on. The screen shows "CODE" when locked.
- Press and hold preset buttons 1 and 6 for approximately 3-5 seconds.
- The serial number appears in two halves (e.g.,
U3210+L0482).
Alternative: On 2019 Odyssey with the Display Audio touchscreen, navigate to Settings → System → Device Information – the serial may be listed there instead of the button combination.
Access it by Pulling Out the Radio Unit
If the serial number cannot be accessed via display, use the pull-out method.
Most Honda Odyssey OEM radios include a sticker with the serial number printed on the housing.
Step-by-Step Approach:
- Switch off the vehicle.
- Remove the dashboard frame surrounding the radio.
- Release the fasteners.
- Move the unit slightly out to access the label.
The serial number is usually located near the manufacturer sticker.
If neither methods work on the 2019 Honda Odyssey:
- Power down the vehicle.
- Pry off the radio surround. The 2019 Odyssey's modern dashboard uses snap-fit clips.
- On touchscreen trims: Remove the fasteners (Phillips-head) securing the display module.
- For standard radios: Remove the 4 Phillips screws holding the head unit.
- Slide the unit forward and find the serial on the label on the chassis.
Tip: The Display Audio unit is larger and more tightly fitted than the base radio. Take care when removing it.
2019 Honda Odyssey radio removal
Safety first. Disconnect the negative battery cable and wait several minutes for SRS capacitors to drain before disturbing the dash. Plastic trim removal tools are essential - metal tools will mar the soft-touch finish and break clips.
- Pry off the bezel that surrounds the Display Audio screen, working around the perimeter to release the clips.
- Remove the two Phillips screws holding the audio unit to the sub-frame.
- Pop the top of the audio unit out first, then ease the assembly forward.
- Disconnect each harness on the rear, including the Fakra antenna connector - handle the Fakra carefully (Honda TSB applies).
- Lift the unit clear of the dash and rest it on a soft surface.
The integrated 8-inch Display Audio shares the dash module with climate routing, CabinWatch / CabinTalk paths and DVD / Blu-ray entertainment electronics, so the assembly is dense. Professional service is the safer route unless you have done the job before. Reverse the steps to reinstall.
Example: Honda Odyssey serial number label location
These are the Common Serial Formats
Based on which radio installed in the 2019 Honda Odyssey:
U1234L5678– Standard Honda OEM formatHBM####– Found on Display Audio and nav-equipped units913A####– Some Alpine-manufactured radios
The 2019 Odyssey may have: base CD radio (U/L format), Display Audio 5"/7" (HBM format), or navigation unit (HBM format). All require a 5-digit unlock code.
Important Verify you record the serial number, not the part number (which starts with 39100, 39101, or similar Honda part coding).
2019 Odyssey radio serial format
- Expect an 8-character alphanumeric serial (some Honda Display Audio variants run to 10 characters).
- Characters are uppercase A-Z and digits 0-9 only - no symbols, spaces or punctuation.
- Where a hidden menu shows split halves with
UandLprefixes, ignore the prefix letters and concatenate the digits to form the full serial. - Distinguish ambiguous glyphs carefully when transcribing: 0 vs O, 1 vs I, 8 vs B.
Code Entry Process for 2019 Odyssey
Now that you've found the serial number and retrieved the unlock code, the next part is entering it into your radio.
Honda factory radios display a ENTER CODE message when ready for input.
The process is simple, but button layouts and confirmation methods may change depending on the radio version installed in your Odyssey.
Detailed Input Instructions for Odyssey 2019
To enter the code on the 2019 Honda Odyssey:
- Ignition ON. Radio shows "CODE" or "ENTER CODE".
- Non-touchscreen models: Use preset buttons 1-5 to cycle to each digit, then press and hold button 6 to confirm.
- Display Audio touchscreen: An on-screen keypad appears. Tap each digit and press "Enter" or "OK".
Lockout: Three wrong codes cause a 60-minute lockout. Keep ignition ON. Do not cycle the key or the timer resets.
Entering the 2019 Odyssey radio code
- Turn the ignition ON; if the audio is locked the Display Audio shows a
CODEprompt. - The code is a 5-digit numeric value issued by Honda for that radio serial.
- Tap each digit on the on-screen keypad, or press preset buttons 1-6 on the bezel (preset 1 = 1, preset 6 = 6).
- A brief confirmation tone plays after the fifth digit and the audio system unlocks.
How to Get Your 2019 Honda Odyssey Radio Code
Car radios use security codes dependent on the radio unit itself rather than the model or production year.
- Our lookup service works by matching your Honda Odyssey radio's serial number.
- After entering the serial into the form above, the system identifies the radio unit and generates the code that you need.
- Simply input the digits into the Odyssey stereo.
- The online process is quicker and more accessible than visiting the Honda dealer.
Fixing Common Code Entry Problems for 2019 Odyssey
For Display Audio-era Honda radios, a rejected code is typically caused by the serial was misread. Either retrieval method can produce the correct serial — verify that the serial you submitted was read off the radio unit and not from a sticker elsewhere in the car.
If the code was already entered once and rejected, pause and reach out before trying again — another incorrect entry gets you one step closer to the 60-minute lockout. A no-charge serial reverification is available on request.
When the touchscreen comes on but goes straight to the home screen without a "CODE" prompt, check the following:
- Anti-theft may not have triggered — some battery changes don't trigger the lock if done quickly enough.
- Certain Display Audio units, the code prompt shows only on the audio portion of the screen, not the navigation display — wait a few seconds after startup.
- Try the Settings → System → Device Information route; if the serial is visible there, the unit may still be functional without a code.
If none of these apply, checking the radio fuse is the next step — a blown fuse prevents the radio from powering on at all.
Code entry depends on the specific radio in the Display Audio-era Odyssey:
- Non-touchscreen base radio: Use preset buttons 1–5 to scroll to each digit, then hold button 6 to confirm — same as older Honda platforms.
- Display Audio 5" or 7" touchscreen: An on-screen numeric keypad is shown when the code prompt is active. Tap each digit and press OK or Enter on screen.
Should the touch input not work, attempt the physical preset buttons — some units support either input method. Make sure the screen is fully booted before attempting entry.
The Display Audio platform applies the same 3-attempt lockout as earlier Honda radios. To recover:
- Leave the ignition in ON or ACC — do not switch off.
- Wait out the full 60-minute period. The touchscreen may go to sleep during this time — this is expected.
- After 60 minutes, the code prompt returns and you can.
For touchscreen units, the lockout countdown operates even when the screen is off. Simply leave the vehicle running or the ignition on ACC until the timer expires.
The Display Audio era spans radios using multiple serial prefixes depending on which unit was fitted:
U####L####— base CD radio serial (10 characters, two halves).HBM####— Display Audio 5"/7" and navigation modules.913A####— certain Alpine OEM configurations.
Part numbers printed nearby begin with 39100 or 39101 — do not submit these. When in doubt, use the Settings → Device Information menu or the 1+6 button method to pull the serial directly from the radio.
Why Did the Radio Lock and Ask for a Code?
Honda's Display Audio system carries the same anti-theft architecture as earlier radios: losing battery power triggers a code request at next startup. This affects both the base radio and the Display Audio touchscreen.
- Battery replacement — the usual culprit.
- Battery disconnect during repairs — service that interrupts battery power will re-engage the lock.
- Completely dead battery — a drained battery also triggers the request.
Note: a number of higher-end Display Audio models from this era do not use a traditional code-based lock — if the radio never prompted for a code after a battery change, it could have a different anti-theft method tied to the vehicle VIN.