Finding the Radio S/N for Honda
The important fact to know is that factory radios use a specific S/N to identify each unitindividually.
The security system matches the code directly to this serial.
Different from car-specific data like VIN or registration information, it is not determined by the model or production year, so you'll be able to generate it even if you have an aftermarket radio.
Depending on the maker and radio installed in your Honda Odyssey, the access method is different.
Here are the best ways to locate it.
Factory radios fitted to the 2017 Honda Odyssey
- LX base receiver with AM/FM/CD playback feeding 5 speakers, paired with the upper i-MID secondary information display; this final 4th gen LX retained the conventional button-and-knob fascia.
- EX, EX-L and SE head unit with the touch-panel Honda Display Audio (HDA) interface, supporting HondaLink-based smartphone features, Bluetooth streaming audio and Pandora compatibility.
- EX-L and Touring with optional Honda Satellite-Linked Navigation System, layering a touchscreen navigation interface, voice recognition and Bluetooth HandsFreeLink onto the HDA hardware.
- Touring Elite range-topping audio package, combining HDA, factory navigation, the upgraded Rear Entertainment System with widescreen video monitor and HDMI input, and a 650-watt 12-speaker premium audio system with HD Radio in the final year of the RL5 platform.
Check the Display First - Serial Retrieval Without Tools
Try the following for your 2017 Honda Odyssey:
The 2017 Honda Odyssey could have Honda's Display Audio touchscreen (7" depending on trim) or a standard non-touchscreen radio. All versions support serial number display via the 1+6 button method:
- Turn ignition to ON. Let the radio to boot. The screen shows "CODE" when anti-theft is active.
- Hold down preset buttons 1 and 6 for approximately 3-5 seconds.
- The serial number appears in two halves (e.g.,
U3210+L0482).
Alternative: On 2017 Odyssey with the Display Audio touchscreen, look in Settings → System → Device Information – the serial may be shown there without using the button combination.
Reading the serial on a 2017 Odyssey factory radio
- Make sure all doors are closed and the radio is currently powered off, then switch the ignition to the ON position so the dash is live but no audio is playing.
- Press and hold preset buttons 1 and 6 on the radio's preset row at the same time; on HDA units the touch-panel preset surfaces accept the same long-press input.
- While still holding 1 and 6, press the radio power button so the unit boots into the service screen used to display the serial.
- Read the first screen, which shows U followed by four digits, and record those digits as the upper half of the serial.
- Wait for the display to alternate to the L screen and record the four digits shown there as the lower half of the serial.
- Concatenate the two halves into a single 8-character serial; the U and L are screen labels only and are not part of the value entered into Honda's lookup tools.
Locate Serial on Odyssey's Radio Chassis
If the serial number cannot be accessed via display, use the pull-out method.
Most Honda Odyssey factory radios include a label with the serial number printed on the chassis.
Step-by-Step Approach:
- Power down the vehicle.
- Remove the dashboard frame surrounding the radio.
- Loosen the mounting bolts.
- Pull the unit forward to access the label.
The serial number is usually located near the barcode.
If none of these methods succeed on the 2017 Honda Odyssey:
- Turn off the vehicle.
- Pry off the radio surround. The 2017 Odyssey's modern dashboard uses friction clips.
- On touchscreen trims: Remove the mounting screws (Phillips) securing the screen unit.
- On base trims: Remove the four screws holding the head unit.
- Ease the unit out and locate the serial on the sticker on the chassis.
Note: The touchscreen unit is wider and more tightly fitted than the base radio. Take care when extracting it.
Removing the radio on a 2017 Odyssey to read the serial label
- Disconnect the negative battery terminal and wait several minutes for residual SRS power to drain before working around the centre stack.
- Use the shift-lock release to drop the gear selector into its lowest position, then pry up the gear-shift trim panel from its rear edge to release the clips, unplug any harnesses and lift the panel out.
- Open the glove box, pry out the rear edge of the dash end cap and remove the upper glove box trim panel by releasing its clips so the centre stack is accessible from the passenger side.
- Remove the four 8 mm screws securing the climate control and centre vent trim, then pry the trim panel away to release its clips and disconnect the climate, audio and HDA touch-panel harnesses on the back.
- Take out the screws now visible on the receiver's mounting brackets, slide the head unit evenly out of the dash supporting it by the chassis rather than the touch panel face, and disconnect the antenna lead and multi-pin connectors on the back.
- Read or photograph the 8-character chassis label on the side of the radio; it should match the value reported by the on-screen procedure. Use plastic trim tools throughout to avoid marking the soft-touch dash plastics, and preserve the harness routing on reassembly.
Example: Honda Odyssey serial number label location
Serial Number Format Guide for 2017 Honda Odyssey
Depending on which radio installed in the 2017 Honda Odyssey:
U1234L5678– Most common Honda OEM formatHBM####– Found on Display Audio and navigation units913A####– Some Alpine-manufactured radios
The 2017 Odyssey may have: base CD radio (U/L format), Display Audio 5"/7" (HBM format), or navigation unit (HBM format). All use a 5-digit unlock code.
Important Ensure you read the serial number, not the part number (which starts with 39100, 39101, or similar Honda part coding).
What the 2017 Odyssey radio serial usually looks like
- The serial returned by the on-screen procedure is 8 characters long. On most 2017 Odyssey LX, EX, EX-L and HDA-equipped head units the value is purely numeric, although some chassis labels include letters or longer manufacturer prefixes that should be ignored.
- The U on the first screen and the L on the second screen are screen labels for the upper and lower halves of the serial; they are not entered into Honda's lookup tools.
- A typical example reads U2051 followed by L5641, which corresponds to a stored serial of 20515641 for the lookup.
- Touring, SE and Touring Elite head units, which use the HDA touch-panel hardware (with optional factory navigation on EX-L and Touring), follow the same 8-character pattern and present the digits on the touchscreen.
Locked Odyssey Radio? Here's Exactly How to Get the Code
To get the code, you'll take only 4 easy steps.
- Find the radio's serial number - this is the only info required to generate the correct unlock code.
The difference with the dealership lookup is that no VIN or paperwork is needed. - Enter the serial number into our generator above.
The system checks it against a database of supported units and automatically finds the matching anti-theft code. - In most cases, the code appears instantly on the screen after you pay and is also sent to your email , just in case.
If we need to check it manually, you'll be informed before checkout. - Once you receive the code, just enter it into the radio to restore the functionality.
Code Entry Process for 2017 Odyssey
Now that you've found the serial number and retrieved the unlock code, the next part is entering it into your radio.
Honda original head units display a ENTER CODE message when ready for input.
The process is usually straightforward, but button layouts and confirmation methods may change depending on the radio version installed in your Odyssey.
Detailed Input Instructions for Odyssey 2017
To enter the code on the 2017 Honda Odyssey:
- Ignition ON. Radio shows "CODE" or "ENTER CODE".
- Non-touchscreen models: Press preset buttons 1-5 to select each digit, then press and hold button 6 to confirm.
- Display Audio touchscreen: An on-screen keypad may appear. Tap each digit and press "Enter" or "OK".
Lockout: 3 wrong codes cause a 60-minute lockout. Leave ignition ON. Don't cycle the key or the timer starts over.
Entering the unlock code on a 2017 Odyssey radio
- Switch the ignition to ON and power the radio so that CODE or ENTER CODE appears on the display.
- Enter the code one digit at a time, in order, with one press of the preset numbered the same as each digit; HDA touch-panel presets accept the same input.
- On Touring, Touring Elite and HDA units fitted with the optional navigation, the digit can also be set by rotating the selector knob and confirmed using the right-arrow soft key on the touchscreen.
- The radio normally takes the code without a submit press once all five digits are in; on touchscreen units, tap ENTER if the keypad shows it.
- The radio should resume normal operation immediately if the code is correct; if it is wrong, repeat the process carefully because each wrong attempt counts toward the lockout limit.
- After approximately ten incorrect entries the unit enters a temporary lockout that requires the ignition to be left in the ON position for about an hour before another attempt is accepted.
Understanding Unlock Issues with Your Odyssey
The Display Audio era spans radios using different serial formats depending on which unit was fitted:
U####L####— base CD radio serial (10 characters, two halves).HBM####— Display Audio 5"/7" and navigation units.913A####— some Alpine OEM units.
Part numbers on the same label start with 39100 or 39101 — do not submit these. When in doubt, use the Settings → Device Information menu or the 1+6 button method to display the serial directly from the radio.
When the touchscreen comes on but shows the home screen without any "CODE" prompt, consider these points:
- The radio may not be locked — some battery changes skip the lock if power was restored fast.
- On some Display Audio units, the code prompt shows only on the audio portion of the screen, not the navigation display — wait a moment after startup.
- Check the Settings → System → Device Information route; if the serial is visible there, the unit may still be functional without a code.
Should none of the above match, a fuse check is the next step — a blown fuse prevents the radio from showing any display at all.
The Display Audio platform enforces the same three-try lockout as older Honda radios. Recovery steps:
- Maintain the ignition in ON or ACC — do not switch off.
- Allow the full 60-minute period. The touchscreen might dim during this time — that's normal.
- After 60 minutes, the radio re-displays "CODE" and you can.
On Display Audio touchscreen models, the lockout countdown operates even when the screen is off. Simply leave the vehicle running or the ignition on ACC until the timer expires.
On the Display Audio, a rejected code most often means the serial was taken from the wrong source. Both the button method and the settings menu can produce the correct serial — double-check that the serial you submitted came from the radio itself and not from a sticker elsewhere in the car.
After one failed entry, pause and reach out before trying again — another incorrect entry gets you one step closer to the 60-minute lockout. A free serial reverification is available on request.
Code entry depends on the exact radio variant in the 2014–2021 Odyssey:
- Non-touchscreen base radio: Press preset buttons 1–5 to scroll to each digit, then hold button 6 to confirm — identical to 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.
If the touchscreen is unresponsive, attempt the physical preset buttons — some units accept both input method. Ensure the screen is fully booted before starting entry.
Why Is the Radio Asking 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. Applies to both the base radio and the Display Audio touchscreen.
- Battery replacement — by far the most frequent cause.
- Battery disconnect during repairs — service that cuts battery power will re-engage the lock.
- Completely dead battery — a drained battery also triggers the request.
Note: many higher-trim Display Audio models from the 2014–2021 period might not use a traditional code-based lock — if the radio never showed "CODE" after losing power, it may use a different anti-theft method linked to the vehicle VIN.