Where to Find the Serial Number on your 300C
Very important thing to know is that factory radios use a specific serial number to identify each unitindividually.
Your security system matches the code directly to the serial.
Different from vehicle-specific data like VIN or registration info, it is not determined by the model or production year, so you'll be able to retrieve it even if you have an aftermarket radio.
Depending on the maker and radio installed in your Chrysler 300C, the retrieval method varies.
Here are the most reliable ways to find it.
2022 Chrysler 300 / 300C Factory Radios
The 300C trim was on hiatus for 2022 - Chrysler offered Touring, Touring L and 300S only - so a 2022 car wearing 300C trim or badging is generally an export-market variant, an aftermarket badge or a carry-over reference until the 2023 300C special edition relaunched the nameplate. The Uconnect 4 hardware family carries over unchanged.
Uconnect 4C NAV (UAQ) is the 8.4-inch touchscreen with built-in GPS, frequently optioned on 300S and present on retained-name 300C / export configurations. Visual ID: 8.4-inch screen filling the dash opening, dedicated NAV/Map tile on the home screen, on-board maps without a phone, Apple CarPlay and Android Auto supported.
Uconnect 4C (UAS) is the 8.4-inch non-NAV touchscreen. Common on 2022 Touring L and 300S without the navigation upgrade. Same 8.4-inch glass as UAQ but no Map/NAV tile.
Uconnect 4 (UAG) is the 7-inch non-NAV touchscreen, standard on the entry Touring and listed for completeness if a smaller screen has been retrofitted.
Quick test: 8.4-inch screen with a Map tile = UAQ, 8.4-inch with no Map tile = UAS, smaller 7-inch screen = UAG.
Access Your S/N on the Radio Display
The method for 2022 Chrysler 300C is this:
The 2022 Chrysler 300C — the HEMI V8 top-trim final-generation 300 — is equipped with the Uconnect 4C (RA4). Press the bottom-left and bottom-right corners of the physical bezel frame simultaneously for 5 seconds (ignition ACC or ON) to open Dealer Mode. Go to: System Info → Radio Part Info → Serial Number.
Important Press the plastic bezel frame, not the touchscreen surface itself.
Access the S/N via the Radio Screen
The 2022 Chrysler 300 / 300C continues with the Uconnect 4 line-up - 8.4-inch UAQ NAV, 8.4-inch UAS non-NAV, and the smaller 7-inch UAG. The radio serial number can usually be read on screen via the hidden dealer/diagnostic menu, although newer Uconnect software builds have tightened dealer-mode access on some cars.
Uconnect 4C 8.4 (UAQ / UAS). Switch the ignition to RUN/ACC and wait for the Uconnect interface to finish booting. Press and hold the driver-side temperature UP, the driver-side temperature DOWN, and the front DEFROST buttons together for roughly 5-10 seconds. If the climate-button shortcut does nothing on a software-updated unit, press and hold the bottom-left and bottom-right corners of the screen at the same time for about 5-10 seconds. Browse to the radio/system info section to view the 14-character serial number on screen, then photograph the screen before transcribing the characters.
Uconnect 4 7-inch (UAG). Place the ignition in RUN/ACC and let the screen finish loading. Press and hold both temperature UP and temperature DOWN buttons together for around 5-10 seconds to enter the engineering menu, then browse to System Info / Target Main Data to view the serial. Take a photo of the display so the characters can be copied accurately.
Serial Number on the Unit
If the serial does not appear on display, the next step is checking the radio itself.
Many Chrysler radios require physical access to the serial sticker attached to the unit.
Common approach:
- Start by completely powering down the engine - pull the key out.
- Then remove the trim panel.
- Next, loosen the mounting points and move the radio forward.
- Look for a printed tag showing the serial number.
If Dealer Mode is unavailable on the 2022 Chrysler 300C 300C, remove the RA4 from the premium center stack.
- Carefully pry off the center bezel with a plastic trim tool — take care with the premium finish.
- Remove the 4 Torx T20 mounting screws.
- Slide the unit out to access the serial label on the top or side of the chassis.
Locate Serial on Chrysler 300C's Radio Chassis
If dealer mode has been restricted on the 2022 Chrysler 300 / 300C by a Uconnect software update, the printed chassis label remains the next reliable source. The Uconnect 4 head unit on the LD-platform 300 sits in a centre stack closely tied to the climate cluster, so work slowly and methodically.
Safety first. Turn the ignition off, take out the key, disconnect the negative battery terminal, and wait a few minutes before touching wiring. Never disturb the yellow airbag/SRS connectors and use plastic trim tools to avoid shorts and broken clips.
Tools you will need. Plastic trim removal kit (a Mopar C-4755 trim stick or equivalent), Phillips and small Torx bit set, 7mm/10mm socket set, flashlight.
Removal overview. Pop the centre instrument panel bezel free using a plastic pry tool starting at the lower edge and working up the sides; on the LD 300 this bezel also carries the A/C-heater control and clock connectors. Unclip those harnesses at the rear of the bezel before setting the trim aside on a clean cloth. Remove the mounting fasteners (typically four screws, two upper and two lower) that secure the radio cage to the dash support bracket. Slide the radio rearward and disconnect the antenna lead and the multi-pin power/data harness on the back.
Where the serial sits. The serial number is printed on a barcode/sticker label on the top or side of the radio chassis, next to the part number and supplier markings.
Tips. Photograph the label and double-check ambiguous characters such as 0/O, 1/I and B/8 before submitting the serial. If you are not comfortable working around airbag wiring or the integrated climate cluster, have a professional installer take the unit out for you.
Example: Chrysler 300C serial number label location
These are the Common Serial Formats
Year Chrysler 300C RA4 serial formats:
T00AM– Harman RA4 Uconnect 4C (typical on the 300C)T00BE– Continental variant
Serial is 14 alphanumeric characters. Part number (starts with P or 68) is on the same label — ignore it.
S/N Patterns and Prefixes
The factory radios on the 2022 Chrysler 300 / 300C follow the standard Mopar/Uconnect serial style. The exact prefix depends on the Uconnect tier shipped with the car and the supplier (Visteon, Continental, Harman or Panasonic) that built the unit.
Uconnect 4C 8.4 (UAQ / UAS). Typically printed as a 14-character alphanumeric string on the chassis label. Commonly begins with T - frequent prefixes include T00AM, TM9 and TQ1 - or with A2C on Continental-built variants. Usually a continuous run of letters and digits with no dashes or spaces.
Uconnect 4 7-inch (UAG). Usually carries a Mopar/Harman or Panasonic-style serial on the chassis sticker, so the label on the unit itself is the authoritative reference. Copy the serial exactly as printed and avoid guessing characters that look unclear.
Unlocking the Radio After Code Generation
Now that you've found the S/N and generated the unlock code, the next part is entering it into your radio.
Chrysler original head units 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 300C.
The Correct Way to Enter It
To unlock the 2022 Chrysler 300C Uconnect 4C:
- Turn ignition to ON. Screen displays "ENTER CODE".
- Enter each digit of your 4-digit code on the touchscreen keypad.
- Radio auto-confirms after the 4th digit. No confirm button needed.
3 wrong attempts trigger a 60-minute lockout. Keep ignition ON for the full wait. Turning off restarts the timer.
Step-by-Step Correct Entering Process
Once the unlock code has been retrieved for a 2022 Chrysler 300 / 300C Uconnect head unit, it can be entered directly at the dash - no scan tool or dealer visit required.
Limited attempts. Mopar/Uconnect head units only accept three incorrect tries before the radio enters a WAIT state, so confirm every digit before pressing it.
Entering the code. Place the ignition in RUN/ACC so the radio powers up but the engine stays off. Wait for the display to show CODE, Please enter Anti-Theft Code, or a similar prompt. On the Uconnect 4C 8.4 (UAQ/UAS), tap the on-screen number pad to enter each digit and confirm with the OK/Enter touch button. On the Uconnect 4 7-inch (UAG), press the numbered preset buttons in sequence (preset 1 = first digit, preset 2 = second, etc.) - or use the on-screen keypad when the unit prompts for it.
If a wrong code was entered. If WAIT appears after wrong attempts, leave the radio powered with the ignition in RUN for a continuous 30 minutes (the vehicle may be driven during this time) before trying the correct code again.
How 2022 Chrysler 300C Radio Code Lookup Works
- Rather than relying on Chrysler dealership lookup or online threads you can find the code online with the radio S/N.
- Start by finding your radio's serial. The best place to search is on the unit itself, and in some cases it can be visible on the 300C's radio screen.
- Enter it into the form above, and the system will generate the correct 2022 300C unlock code.
- When you receive the code, input it using 300C's radio controls to unlock the system successfully.
- The entire process takes just a short moment and requires minimal effort.
Why Is the Radio Asking for a Code?
The 2022 Chrysler 300C RA4 locks automatically after battery is disconnected. The HEMI-spec 300C uses the same lock system as all Uconnect RA4 radios.
Typical cause: battery replacement or disconnect. Other causes:
- Blown fuse after electrical work
- Buying the 300C used without a code
- Battery disconnect during service
- Battery drained from sitting
Code is derived from the radio serial number — not the VIN.
Understanding Unlock Issues with Your 300C
The 300C RA4 label has both serial and part number. Serial: 14 chars starting with T00AM or T00BE. Part number (skip): starts with P or 68.
Double-check carefully. Contact support for a free re-check if needed.
On the 300C RA4 label: serial = 14 alphanumeric chars starting with T00AM or T00BE. Part number starts with P or 68 — skip this.
If no code prompt appears, anti-theft is inactive. Trigger the prompt: briefly disconnect the battery, reconnect, turn to ON.
3 wrong entries lock the 300C RA4 for 60 minutes. Keep ignition in ON or ACC. Turning off restarts the timer.
The 300C Uconnect 4C uses touchscreen-only code entry. Press each digit on the on-screen keypad. Confirms after the 4th digit. No physical buttons needed.