2018 Chrysler 300 Radio Code: Get It Back Instantly

Radio showing LOCKED? Your Chrysler 300 2018 can be unlocked quickly using the radio unit's serial. Enter it in the form and use the steps below if you need guidance.

VIN is not needed for code retrieval - only serial number of your radio.
No documents required.

You're covered by a 100% money-back guarantee.
Verification is quick and easy.
Review our Refund Policy for complete terms.

Delivery is instant in most Chrysler 300s.
Rare Chrysler cases may take up to 24 hours.

Serial Number Patterns:

Your radio serial may start with: T00AM, T00BE, TM9, T0MYD, A2C, TQN, TVPQN, T0071, T00AD

Serial Number Examples:

T0MYD164822563 (T0MYD)
T00BE351823197 (T00BE)
TM9341100221 (TM9)
Chrysler 300 2018 car photo
How to find Chrysler 300 2018 radio serial number
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How to Get Your 2018 Chrysler 300 Radio Code

To get the code, you'll take only 4 easy steps.

  1. Find your radio's serial - this is the only info required to generate the correct unlock code.
    Unlike dealership lookup, no VIN is needed.
  2. When you've found the S/N, type it into the form above.
    The system checks it against a database of supported factory radios and automatically retrieves the matching security code.
  3. In most cases, the code will appear 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 notified before checkout.
  4. When you get it, just enter it into the radio to restore the functionality.

Serial Number Location Guide for Chrysler 300 2018

The starting step is finding the radio serial number.

Many people assume the code depends on the Chrysler model or year, but in reality, the whole process relies on the unique radio unit's serial number.

This number identifies the exact head unit installed in your Chrysler 300.

This is actually better, because if you have a used radio, the VIN or other vehicle-specific data wouldn't be of much use.

Depending on the radio used, you can see the serial directly from the screen or by looking at the label on the radio chassis.

Factory Radios on the 2018 Chrysler 300

The 2018 Chrysler 300 sits firmly in the Uconnect 4 era. Three head units cover the trim ladder, separated by screen size and whether built-in GPS navigation is included.

  1. Uconnect 4 (sales code UAG) - 7-inch non-NAV touchscreen, fitted to the entry 300 Touring trim. Visual ID: smaller 7-inch screen centred in the dash bezel opening with trim filling the surround; Apple CarPlay and Android Auto are supported, but no factory NAV/Map tile sits on the home screen.
  2. Uconnect 4C (sales code UAS) - 8.4-inch non-NAV touchscreen, optional on Touring/Touring L, standard on some 300S builds. Visual ID: large 8.4-inch screen filling the dash bezel edge to edge, CarPlay and Android Auto present, but no Map/NAV tile on the home screen.
  3. Uconnect 4C NAV (sales code UAQ) - 8.4-inch with built-in GPS, standard on 300C and 300S Premium, optional on lower trims. Visual ID: identical 8.4-inch bezel and glass to UAS, but the home screen carries a dedicated NAV/Map tile and on-board maps work without a phone.

Quick field check: 7-inch screen = UAG, 8.4-inch with no Map tile = UAS, 8.4-inch with a Map tile = UAQ.

Fast Serial Lookup Using Radio Controls

These are the steps you need to follow for 2018 Chrysler 300:

The 2018 Chrysler 300 full-size sedan features the Uconnect 8.4" Classic (RA3), which includes a hidden Dealer Mode to reveal the serial number on the 8.4" display.

On the 300, the Climate Up, Climate Down, and Front Defrost buttons are positioned beneath the 8.4" screen on the center stack. Hold all three simultaneously for 5 seconds with the ignition in ACC or ON. Dealer Mode opens. Navigate to: System Info → Radio Part Info → Serial Number.

Fast Serial Lookup Using Radio Controls

The 2018 Chrysler 300 ships with the Uconnect 4 family of head units (8.4-inch UAQ NAV, 8.4-inch UAS non-NAV, and the smaller 7-inch UAG). On these units the radio serial number can usually be read straight from the touchscreen via the hidden dealer/diagnostic menu - no need to pull the unit out of the dash.

Uconnect 4C 8.4 (UAQ / UAS)

  1. Switch the ignition to RUN/ACC and wait for the Uconnect interface to finish booting.
  2. Press and hold the driver-side temperature UP, the driver-side temperature DOWN, and the front DEFROST buttons together for roughly 5-10 seconds until the dealer/engineering screen opens.
  3. If the climate-button shortcut does nothing, press and hold the bottom-left and bottom-right corners of the screen at the same time for about 5-10 seconds.
  4. Once inside, browse to the radio/system info section to read the 14-character serial number printed on screen.
  5. Photograph the screen so each character can be transcribed without typos.

Uconnect 4 7-inch (UAG)

  1. Place the ignition in RUN/ACC and let the screen finish loading.
  2. Press and hold both temperature UP and temperature DOWN buttons together for around 5-10 seconds to enter the engineering menu.
  3. Open System Info / Target Main Data to view the serial number on screen.
  4. Photograph the display before transcribing the digits.

Access the Serial by Pulling Out the Radio

If the serial number cannot be accessed through menu, use the hardware method.

Most Chrysler 300 factory radios include a label with the serial number printed on the housing.

Step-by-Step Approach:

  1. Power down the vehicle.
  2. Lift the dashboard frame surrounding the radio.
  3. Loosen the fasteners.
  4. Move the unit slightly out to access the label.

The serial number is usually located near the barcode.

If Dealer Mode is unavailable on the 2018 Chrysler 300, pull the RA3 unit from the 300's center stack. The 300's formal upright center console provides good clearance once the bezel is off.

  1. Remove the center stack bezel with a plastic trim tool — held by.
  2. Remove the four Torx T20 mounting screws.
  3. Slide the unit forward to see the serial label on the top or side of the chassis.

Releasing the Unit to Access the S/N on the Tag

If the on-screen menu is unavailable on the 2018 Chrysler 300, the chassis label on the radio itself remains a reliable source for the serial number. The Uconnect 4 stack on the LD-platform 300 is closely tied to the climate cluster, so work slowly to avoid breaking trim clips.

  1. Safety first: turn the ignition off, take out the key, disconnect the negative battery terminal, and wait several minutes before touching wiring; never disturb the yellow airbag/SRS connectors and use plastic trim tools so nothing shorts or breaks.
  2. Tools you will need: plastic trim removal kit (such as a Mopar C-4755 trim stick or equivalent), Phillips and small Torx bit set, 7mm/10mm socket set, flashlight.
  3. Disconnect and isolate the negative battery cable per the Mopar service manual procedure.
  4. Pop the centre instrument panel bezel out from the bottom edge with a plastic pry tool, work up the sides, and unclip the climate/clock connectors before setting the bezel aside.
  5. Remove the mounting fasteners (typically four screws, two top and two bottom) holding the radio cage to the dash support.
  6. Slide the head unit straight rearward, then disconnect the antenna lead and the multi-pin power/data harness on the back.
  7. The serial number sits on a printed barcode/sticker on the top or side of the radio housing, alongside the part number and supplier markings.
  8. Tip: if the bezel resists, stop and double-check for hidden fasteners under trim or knee bolster panels rather than pulling harder; if you are uncomfortable working around the airbag wiring or the integrated climate cluster, have a professional installer remove the unit for you.
Chrysler 300 2018 radio serial number label location

Example: Chrysler 300 serial number label location

What a Valid Serial Number Looks Like

The 2018 Chrysler 300 RA3 radio serial formats:

  • T00AM – Harman VP2 RA3 (most common on the 300)
  • T00BE – Continental version
  • TM9 – Earlier Harman production

Serial is 14 alphanumeric chars. The part number (starts with P05064 or 68) is on the same label — ignore it.

Typical Serial Number Formats for 2018 Chrysler 300 Radios

The factory radios on the 2018 Chrysler 300 use the standard Mopar/Uconnect head-unit serial style. The exact prefix depends on which Uconnect tier and which supplier (Visteon, Continental, Harman or Panasonic) built the unit.

Uconnect 4C 8.4 (UAQ / UAS)

  1. Typically a 14-character alphanumeric string printed on the chassis label.
  2. Commonly begins with T (for example T00AM, TM9, TQ1) or with A2C on Continental-built variants.
  3. Often runs as a continuous string of letters and digits with no dashes or spaces.

Uconnect 4 7-inch (UAG)

  1. Usually carries a Mopar/Harman or Panasonic-style serial on the chassis label - the printed sticker on the unit itself is the authoritative reference.
  2. Always copy the serial exactly as printed and avoid guessing characters that look unclear.

How Code Entry Works on Your Chrysler Radio

Once you have the serial number and retrieved the unlock code, the next part is entering it into your radio.

Chrysler factory radios display a locked screen 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 300.

In-depth Input Instructions for 300 2018

Entering the code on the 2018 Chrysler 300 Uconnect 8.4":

  1. Turn ignition to ON. Screen shows "ENTER CODE" or ----.
  2. Tap each digit of your 4-digit code on the on-screen keypad.
  3. Radio unlocks automatically after the 4th digit — no confirm button needed.

Lockout: 3 wrong attempts trigger a 60-minute lockout. Keep ignition ON for the full 60 minutes. Turning off restarts the timer.

Step-by-Step Code Input Guide

Once the unlock code has been retrieved, the 2018 Chrysler 300 Uconnect head unit can be unlocked at the dash without a scan tool or dealer visit.

  1. 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.
  2. Place the ignition in RUN/ACC so the radio powers up but the engine stays off.
  3. Wait for the display to show CODE, Please enter Anti-Theft Code, or a similar prompt.
  4. On the Uconnect 4C 8.4 (UAQ/UAS), tap the on-screen number pad to enter each digit and confirm with the on-screen OK/Enter button.
  5. On the Uconnect 4 7-inch (UAG), use the numbered preset buttons - or the on-screen keypad if the unit prompts for it - to key the code in sequence (preset 1 = first digit, preset 2 = second digit, etc.).
  6. If WAIT appears after wrong attempts, leave the radio powered with the ignition in RUN for the documented cool-down period (a continuous 30 minutes; the vehicle may be driven during this time) before trying the correct code again.

Why Is the Radio Asking for a Code?

The 2018 Chrysler 300 Uconnect RA3 self-locks whenever power is cut. A removed radio is worthless to a thief.

Most common trigger: battery replacement or disconnect. Other causes:

  • Blown radio fuse after electrical work or shorts
  • Buying the 300 used without a known code
  • Battery disconnect for service or repair
  • Battery dead from not driving for weeks

The code is tied to the radio serial number — not the VIN. Works regardless of vehicle the unit is installed in.

300 2018 Common Radio Problems

If no code prompt appears, the anti-theft isn't active. It only fires after a battery disconnect.

Force the lock: briefly pull the radio fuse, reconnect, turn ignition to ON. "ENTER CODE" shows at boot.

The 300's RA3 label shows both part number (P05064... or 68...) and serial. You need the 14-character serial starting with T00AM, T00BE, or TM9. Watch out for 0 vs. O on the label.

Contact support for a free re-check if the code was rejected after a careful read.

3 wrong entries lock the 300's Uconnect RA3 for 60 minutes. The screen keeps showing "ENTER CODE" but won't accept input.

Keep ignition in ON or ACC for the full 60 minutes without switching off. Cutting power restarts the countdown.

On the 300 RA3 label: serial = 14 alphanumeric chars starting with T00AM, T00BE, or TM9. Part number = starts with P05064 or 68 — not the one you need.

The 300 Uconnect RA3 uses touchscreen-only code entry. Touch each digit on the on-screen keypad. No physical buttons needed. Auto-unlocks after the 4th digit.

Get Your Chrysler 300 2018 Radio Code Now