Can't Find Your Radio S/N? Follow The Steps Below for Chrysler 300C 2016
The first part is to find and write down the radio's serial num.
Depending on the radio unit fitted in your 2016 300C, the S/N can be accessed either through the screen menu or by checking the label on the radio itself.
Below are the most common methods to identify your S/N quickly.
Factory Radios on the 2016 Chrysler 300C
The 2016 model year carries the LD facelift lineup forward unchanged, and on the 300C / 300C Platinum trims the standard head unit is the 8.4-inch Uconnect 8.4 NAV (RA4). The non-nav RA3 still appears on a small subset of order-specific 300C cars where navigation was deselected.
Uconnect 8.4 NAV / RA4 is the standard radio on the 2016 300C - an 8.4-inch landscape touchscreen with the Garmin nav database, HD Radio and SiriusXM Traffic / Travel Link. A Nav tile sits on the home screen, capacitive shortcut keys (Radio, Media, Controls, Climate, Phone, Apps) line the bottom of the screen, and the SiriusXM Traffic / Travel Link splash appears at start-up.
Uconnect 8.4 / RA3 uses the same 8.4-inch hardware as the RA4 but without factory navigation. There is no Nav tile on the home screen and the SiriusXM Traffic splash is absent. None of the 2016 300C head units offer factory Apple CarPlay or Android Auto - that arrives later with the Uconnect 4C generation.
Quick tell: 8.4-inch screen with a Nav tile = RA4; 8.4-inch screen without a Nav tile = RA3. The sales code is printed on the label on top of the radio chassis.
Display-Based Serial Number Retrieval
Try the following for your 2016 Chrysler 300C:
The 2016 Chrysler 300C — Chrysler's HEMI V8 flagship sedan — is equipped with the Uconnect 8.4" Classic (RA3). The 300C's premium interior features the same climate control cluster below the 8.4" screen used to trigger Dealer Mode.
Press and hold Climate Up, Climate Down, and Front Defrost simultaneously for 5 seconds (ignition in ACC or ON). Dealer Mode opens on the display. Go to: System Info → Radio Part Info → Serial Number.
Read the Serial Number Through the Screen
For the 2016 Chrysler 300C fitted with an 8.4-inch Uconnect, the head unit supports a hidden dealer / diagnostic menu that displays the radio's internal serial number. Reading it on screen avoids any disassembly of the dash.
Uconnect 8.4 NAV (RA4) and Uconnect 8.4 (RA3)
Start the engine or place the ignition in RUN so the touchscreen is fully booted. Press and hold the driver's temperature UP, temperature DOWN and front DEFROST buttons together for around 7 seconds. When the dealer / diagnostic menu opens on the 8.4-inch screen, choose the radio-information entries near the top of the list - they list serial numbers, hardware and software revisions and similar identifiers.
Note the full serial exactly as printed, including any leading letters such as T00AM or TM9. Press Done, or cycle the ignition off and on, to leave the menu. If the dealer-mode shortcut does not bring up a serial entry on your specific car, fall back to the chassis-label method described in the radio-removal block.
Manufacturer Label Inspection
If the serial number cannot be accessed via display, use the removal method.
Most Chrysler 300C OEM radios include a sticker with the serial number printed on the housing.
Basic process:
- Ensure the ignition is off.
- Carefully remove surrounding dashboard trim.
- Loosen screws holding the radio.
- Slide outward to inspect the label.
If Dealer Mode is unavailable on the 2016 Chrysler 300C, the RA3 unit can be removed from the 300C's premium center stack. The 300C's premium bezel may require extra care when removing the trim bezel.
- Carefully remove the premium center bezel with a plastic trim tool — avoid scratching the interior finish.
- Remove the four Phillips mounting screws.
- Slide the unit forward to read the serial label on the top or side of the radio chassis.
Pull the Head Unit to Read the Chassis Label
If the on-screen method is unavailable - for example because the radio is locked at the CODE prompt and the touchscreen is unresponsive - the chassis label is the most reliable source for the serial number on a 2016 Chrysler 300C.
Safety preparation
Turn the ignition fully off and remove the key fob from the cabin. Disconnect the negative terminal of the 12V battery and wait several minutes before working near the dash so any airbag-related circuits can fully discharge. Avoid pulling on yellow airbag wiring while moving trim.
Tools to have ready
Plastic trim / panel pry tools to release the bezel clips without marking the dash, a driver that matches the four radio retaining screws (typically Phillips or 7 mm), and a phone or camera to photograph the chassis label clearly.
Removal overview
Begin at a lower edge of the centre dash bezel that surrounds the radio and HVAC controls and pry it gently outward. On the 2016 LD 300C the bezel is held by retaining clips rather than bolts. Walk the pry tool around the perimeter until each clip releases, then ease the bezel forward and unplug the small connectors on its back (hazard switch, clock and climate controls). With the bezel out of the way, undo the four retaining screws now visible at the corners of the radio chassis. Slide the head unit out and disconnect the main wiring harness and the antenna lead.
Where the serial label sits
The serial is on a thermal-printed label on the metal chassis - usually on the top or one side of the housing. Copy the long alphanumeric string next to the barcode, double-checking ambiguous characters (O vs 0, I vs 1).
Tips
Photograph the label before refitting so the serial is preserved as a reference. Reassembly is the reverse - harness back on, four screws home, bezel pressed in until each clip seats, then reconnect the battery.
Example: Chrysler 300C serial number label location
Serial Number Format Guide for 2016 Chrysler 300C
The 2016 Chrysler 300C HEMI RA3 radio serial patterns:
T00AM– Harman VP2 RA3 — most common in the 300C premium trimsT00BE– Continental version of the 8.4" systemTM9– Older Harman production
Serial is 14 alphanumeric characters. Part number on the same label starts with P05064 or 68 — skip it.
Common Serial Number Patterns on 2016 Chrysler 300C Radios
The 2016 Chrysler 300C left the factory with the Uconnect 8.4 family, but those head units could be supplied by different manufacturers, so the serial-number style depends on which radio is in your car. The patterns below are the ones most often reported by owners and unlock services for this generation - treat them as guidance rather than a guarantee.
Continental-supplied Uconnect 8.4 (RA3 / RA4)
Often start with a T00AM prefix followed by a numeric tail, for example a string resembling T00AM1234567. The prefix sits inline with the rest of the serial on the chassis label.
Panasonic-supplied Uconnect units
Frequently start with TM9 followed by additional digits or letters. This pattern has been widely associated with Panasonic-built Mopar radios from the Uconnect 8.4 era.
If the alphanumeric you read does not fit either of these examples, double-check that you have copied the serial line and not the part number. The serial is normally the longest string on the label and is the one tied to the barcode.
How to Get Your 2016 Chrysler 300C Radio Code
Car radios use security codes tied to the radio unit itself instead of the vehicle model or production year.
- Our lookup service works by matching your Chrysler 300C radio's serial number.
- When you input the serial into the generator, the system identifies the radio unit and generates the code that you need.
- You can then enter the code directly into your Chrysler radio.
- Compared to Chrysler dealer retrieval, this method is faster and more convenient.
Code Entry Instructions
When you obtain the correct unlock code based on the S/N, you can restore default functionality by entering it into the unit.
The code entry process depends on the head unit design, but most 2016 300C systems follow a similar structure using preset buttons, touch controls, or rotary knobs - depending on if it's a factory or an aftermarket unit.
You will typically see CODE displayed on screen.
Entering Process Explained
To unlock the 2016 Chrysler 300C's Uconnect 8.4":
- Turn ignition to ON. The screen shows "ENTER CODE".
- Use the on-screen keypad to enter your 4-digit code.
- Radio auto-confirms after the 4th digit.
3 wrong attempts cause a 60-minute lockout. Keep ignition ON for the full duration without switching off.
Step-by-Step Code Input Guide
Once you have the correct anti-theft code for your 2016 Chrysler 300C radio, the entry itself is fast - but the radio will lock you out for half an hour if you keep entering wrong codes, so confirm the code before you start.
Limited Attempt Warning
You only get three attempts. Three wrong codes in a row place the radio in a WAIT state and the screen reads WAIT. To clear it, the radio must remain powered with the ignition in RUN for a continuous 30 minutes. The vehicle may be driven during that time, but switching the key off does not shortcut the timer.
Entering the code
Turn the ignition to RUN or ACC so the radio powers up and shows the CODE / Anti-Theft prompt. On the 8.4-inch Uconnect (RA3 / RA4), tap each digit on the touchscreen number pad. Confirm with the OK / Enter on-screen control. When accepted, the radio returns to the normal home screen and audio resumes.
If it does not unlock
Stop after the second wrong attempt and recheck the serial you used to obtain the code. Make sure no leading letters or trailing digits were dropped from the serial. If WAIT appears, leave the radio powered with the ignition in RUN for the full 30 minutes before retrying.
Understanding Unlock Issues with Your 300C
The 300C Uconnect RA3 uses touchscreen-only code entry. Tap each digit on the on-screen keypad. No physical buttons involved. Auto-unlocks after the 4th digit.
The 300C RA3 label carries both serial and part number. The serial: 14 chars starting with T00AM, T00BE, or TM9. The part number (skip this): starts with P05064 or 68.
Re-read the label, especially 0 vs. O. Contact support for a free re-check if needed.
3 wrong entries lock the 300C's RA3 for 60 minutes. Keep ignition in ON or ACC for the full 60 minutes. Cutting power restarts the timer from zero.
The radio chassis label: serial = 14 alphanumeric chars, starts with T00AM, T00BE, or TM9. Part number starts with P05064 or 68 — not the serial.
If the 300C Uconnect boots normally, the lock hasn't activated. Force it by briefly pulling the radio fuse, then reconnect and turn to ON.
Why Is the Radio Asking for a Code?
The 2016 Chrysler 300C RA3 locks automatically after any power disconnection. Even the premium 300C trim uses the same security system — a disconnected radio is useless without the code.
Most common cause: battery replacement or disconnect. Other causes:
- Failed fuse after electrical work
- Buying the 300C used without a known code
- Battery disconnect during service
- Battery drained from storage
Code comes from the radio serial number — not the VIN.