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. Applies to both the base radio and the Display Audio touchscreen.
- Battery replacement — the usual culprit.
- Battery disconnect during repairs — service that cuts battery power will activate the lock.
- Completely dead battery — a drained battery also triggers the request.
Worth knowing: many higher-end Display Audio models from this era might not use a traditional code-based lock — if the radio never prompted for a code after losing power, it could have a different anti-theft method tied to the vehicle VIN.
How Our Radio Code Generator Works for 2016 Honda Fit
Getting your radio code takes only a few simple steps.
- Find your radio's serial number - this is the only information required to generate the correct unlock code.
Unlike when contacting the dealer, no VIN 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 payment and is also sent to your email , just in case.
If manual verification is required (rare situations), you'll be informed before checkout. - When you receive the code, just enter it into the radio to restore full functionality.
Can't Find Your Radio Serial Number? Follow These Steps for Honda Fit 2016
Very useful thing to know is that factory radios use a specific serial number to identify each unitindividually.
The security system matches the code directly to the serial.
Different from vehicle-specific data like VIN or registration information, it is not determined by the model or production year, so you'll be able to retrieve it even if you have a radio that you bought afterwards.
Depending on the manufacturer and radio installed in your Honda Fit, the access method is different.
Here are the most reliable ways to find it.
2016 Honda Fit factory radios
- 5-inch color LCD audio (LX) - 160-watt AM/FM/CD with four speakers, hard buttons and a tuning knob, Bluetooth HandsFreeLink, single front USB. Non-touch display, no HondaLink, no smartphone projection.
- 7-inch Display Audio with HondaLink (EX, EX-L) - 180-watt 6-speaker system, capacitive electrostatic touchscreen, HondaLink connected services, dual USB and HDMI input, Pandora compatibility.
The 2016 model year is functionally identical to 2015 in terms of head-unit hardware - Apple CarPlay and Android Auto were not yet available on the Fit. Both units demand a 5-digit Honda anti-theft code after any battery disconnect, fuse pull, or unit removal.
Access Your Serial on the Radio Display
Try the following for your 2016 Honda Fit:
The 2016 Honda Fit may feature Honda's Display Audio system (8" depending on trim) or a standard non-touchscreen radio. Either type support serial number retrieval via the 1+6 button method:
- Turn ignition to ON. Let the radio to power up. The screen shows "CODE" when anti-theft is active.
- Hold down preset buttons 1 and 6 for about 5 seconds.
- The serial number shows in two halves (e.g.,
U3210+L0482).
Alternative: On 2016 Fit with the Display Audio touchscreen, navigate to Settings → System → Device Information – the serial may be displayed there instead of the button combination.
Taking Out the Radio to Access the S/N on the Tag
If the serial does not appear in menu, the next step is checking the radio itself.
Many Honda radios require physical access to the serial sticker attached to the unit.
Usual approach:
- Start by completely powering down the engine - pull the key out.
- Then lift the radio surround.
- Next, unscrew the mounting points and move the radio forward.
- Look for a printed tag showing the serial number.
If none of these methods display the serial on the 2016 Honda Fit:
- Power down the vehicle.
- Detach the radio surround. The 2016 Fit's modern dashboard uses snap-fit clips.
- On touchscreen trims: Remove the mounting screws (Phillips) securing the display module.
- For standard radios: Remove the 4 Phillips screws holding the head unit.
- Pull the unit forward and locate the serial on the label on the unit casing.
Note: The Display Audio unit is wider and more integrated than the standard radio. Be careful when removing it.
Removing the head unit on a 2016 Honda Fit
Safety first. Disconnect the negative battery cable and wait several minutes for the SRS (airbag) capacitors to discharge before reaching into the dash. That same disconnect is what triggers the radio's anti-theft lock, so only physically remove the head unit when you have a real reason to - the on-screen 1+6 method below pulls the serial without any disassembly.
- Open the upper dashboard storage lid - the 3rd gen Fit GK has a factory pry notch on the edge of the radio bezel that is exposed once the lid is up.
- Insert a plastic trim tool or a tape-wrapped 3-inch putty knife into the notch and work the bezel away from the dash. The audio unit and the climate panel are both attached to this bezel, so support the assembly as it releases.
- Avoid metal screwdrivers against the dash - the soft-touch and matte plastics on the GK Fit scar visibly and are difficult to refinish.
- Tip the bezel forward and unplug the wiring harnesses for the climate controls and the head unit before separating it fully from the dash.
- Back out the three to four small chassis screws holding the audio unit to its bracket evenly so it slides straight out without binding.
Take photos of each connector before you disconnect it - the plugs are similar in appearance but only seat correctly in their original ports.
Example: Honda Fit serial number label location
What a Valid Serial Number Looks Like
Based on which radio equipped in the 2016 Honda Fit:
U1234L5678– Most common Honda OEM formatHBM####– Used in Display Audio and nav-equipped units913A####– Some Alpine-manufactured units
The 2016 Fit 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 Make sure you copy the serial number, not the part number (which starts with 39100, 39101, or similar Honda part coding).
2016 Fit radio serial format
You should expect an 8-character alphanumeric Honda serial on the 2016 Fit - mixed letters and digits with no spaces, dashes, or punctuation. On the 5-inch LX the value is often shown across two alternating screens prefixed with U (first 4 characters) and L (last 4 characters); ignore the prefix labels and write down the eight characters between them. The 7-inch Display Audio normally shows the serial as a single 8-character string on the touchscreen. Take your time copying it and double-check the look-alikes: 0/O, 1/I, 5/S, and 8/B. A single wrong character returns the wrong code.
Code Entry Process for 2016 Fit
After locating the radio serial 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 straightforward, but button layouts and confirmation methods may vary depending on the radio version installed in your Fit.
Step-by-Step - The Correct Way to Enter It
To input the code on the 2016 Honda Fit:
- 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 may appear. Enter each digit and press "Enter" or "OK".
Lockout: Three wrong codes activate a 60-minute lockout. Keep ignition ON. Don't cycle the key or the timer resets.
Entering the 5-digit code on a 2016 Fit
- Turn the ignition to ON so the head unit boots and shows
CODEor a numeric entry prompt. - Press preset buttons 1 through 6 to dial in your code. Honda 3rd-gen Fit codes are always 5 digits using only 1, 2, 3, 4, 5, or 6 - if a code claims to contain a 0, 7, 8, or 9 it is incorrect for this car.
- Confirm with the right-arrow / Enter control on the 5-inch LX, or with the Enter control on the 7-inch Display Audio touchscreen.
- Several wrong attempts lock the radio for roughly one hour. Leave the ignition ON for the full hour - cycling power restarts the cooldown timer.
Fit 2016 Common Radio Problems
The Display Audio platform applies the same 3-attempt lockout as older Honda radios. Recovery steps:
- Keep the ignition in ON or ACC — avoid turning it off.
- Allow the full 60-minute period. The touchscreen might dim during this time — this is expected.
- 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. Just leave the vehicle running or the ignition on ACC for the full hour.
The Display Audio era includes 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 modules.913A####— certain Alpine OEM configurations.
Part numbers on the same label begin with 39100 or 39101 — these are not serials. If uncertain, use the Settings → Device Information menu or the 1+6 button method to retrieve the serial directly from the radio.
Entry method depends on the specific radio in the Display Audio-era Fit:
- Non-touchscreen base radio: Press preset buttons 1–5 to cycle to each digit, then press and hold button 6 to confirm — same as older Honda platforms.
- Display Audio 5" or 7" touchscreen: An on-screen numeric keypad appears when the code prompt is active. Enter the digits and press OK or Enter on screen.
If the touchscreen is unresponsive, try the physical preset buttons — some units support either input method. Make sure the screen is fully powered on before attempting entry.
When the touchscreen comes on but goes straight to the home screen without any "CODE" prompt, check the following:
- Anti-theft may not have triggered — some battery changes don't trigger the lock if done quickly enough.
- On some Display Audio units, the code prompt appears only on the audio portion of the screen, not the navigation display — give it a moment after startup.
- Check the Settings → System → Device Information route; if the serial is visible there, the unit could 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.
For Display Audio-era Honda radios, a rejected code usually points to the serial was taken from the wrong source. Either retrieval method can produce the correct serial — double-check that the serial you submitted was read off the radio unit and not from the owner's card.
After one failed entry, stop and contact support before trying again — another incorrect entry gets you one step closer to the 60-minute lockout. A free serial reverification is available on request.