Radio Serial Number Explained - Finding It on Your Chrysler
The starting step is finding the radio serial.
Most drivers assume the code depends on the Chrysler model or year, but actually, the whole process depends on the unique radio unit's serial number.
Each radio has its own serial tied to the security system.
This is actually better, because if you have bought a used radio, the VIN or other Chrysler-specific data wouldn't be of much use.
Depending on the radio used, you may be able to retrieve the serial directly from the display or by checking the label on the radio chassis.
Which Head Unit Is in Your 2014 Chrysler 300?
For 2014 the Chrysler 300 carried the Uconnect 3C lineup that arrived in 2013 - the RA3/RA4 8.4-inch touchscreens were the dominant factory options for the final pre-facelift model year, while the base CD radio remained available on the entry trim. Knowing which unit you have makes locating the serial number and entering the unlock code straightforward.
Base AM/FM/CD (sales code RES / RE6 family) - Standard on the entry 300 trim. A small non-touchscreen head unit with a monochrome display, single CD slot, and physical preset/tune buttons. No color screen, no Nav button. The lowest-volume option for 2014, since most 300s left the factory with the 8.4-inch touchscreen.
Uconnect Touch 8.4A (sales code RA3 / VP3) - Optional on Limited and standard on 300S. Large 8.4-inch color touchscreen with the Uconnect 3C interface, app-style home-screen tiles, and physical knobs for volume and tuning at the bottom corners. No Nav tile on the home screen and no HD Radio logo. Includes Bluetooth, USB, voice command, and SiriusXM. The back of the radio is stamped VP3.
Uconnect Touch 8.4AN with Nav (sales code RA4 / VP4) - Optional on Limited and 300S, and standard on 300C and SRT8. Same 8.4-inch bezel as the RA3, so the visual giveaway is on the screen itself: a Nav tile on the home page, an HD Radio logo on the radio screen, and a navigation splash at boot. Adds factory GPS navigation, HD Radio, SiriusXM Travel Link, and on SRT8 cars the 19-speaker Harman Kardon premium audio. The back of the radio is stamped VP4.
Bottom line: small non-touch display with a CD slot = RES/RE6 base; big 8.4-inch touchscreen without a Nav icon = RA3 (8.4A); big 8.4-inch touchscreen with a Nav icon and HD Radio badge = RA4 (8.4AN).
View Your Serial on the Radio Display
The method for 2014 Chrysler 300 is this:
The 2014 Chrysler 300 full-size sedan is equipped with the Uconnect 8.4" Classic (RA3), which supports a hidden Dealer Mode to display the serial number directly on screen.
On the 300, the Climate Up, Climate Down, and Front Defrost buttons sit directly below 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.
Taking Out the Radio to View the S/N on the Tag
If the serial number cannot be accessed via display, use the hardware method.
Most Chrysler 300 OEM radios include a tag with the serial number printed on the chassis.
Step-by-Step:
- Power down the vehicle.
- Detach the bezel surrounding the radio.
- Loosen the mounting bolts.
- Slide the unit outward to access the label.
The serial number is usually located near the barcode.
If Dealer Mode is unavailable on the 2014 Chrysler 300, remove the RA3 unit from the 300's center stack. The 300's tall vertical center console provides good clearance once the bezel is off.
- Pry off the center stack bezel with a plastic trim tool — held by.
- Remove the four Phillips mounting screws.
- Slide the unit out to see the serial label on the side or back of the chassis.
Pulling the Unit to Read the S/N Label
For the 2014 Chrysler 300, releasing the head unit from the center stack remains the dependable way to capture the factory radio's serial number. The procedure is the same whether the car has the base RES single-CD receiver, the Uconnect Touch 8.4A (RA3/VP3), or the navigation-equipped 8.4AN (RA4/VP4).
Safety first. Turn the ignition fully off and remove the key. Disconnect the negative battery terminal and wait several minutes for SRS/airbag capacitors to discharge before working in the dash. Avoid yellow airbag wiring and release every connector by its lock tab.
Tools to have on hand. Plastic pry/trim tools (or a tape-wrapped flat-blade screwdriver), a #2 Phillips screwdriver, a small parts tray for the four chassis screws, and a soft cloth across the steering column to protect the dash.
Free the center bezel. The radio/HVAC trim bezel is retained by perimeter spring clips. Begin in a lower corner with the trim tool, and work the panel outward in small steps around the perimeter until each clip releases. Recover any metal clips that stay behind in the dash holes and re-seat them on the bezel before reinstall.
Unplug the bezel-mounted switches. Tilt the loose bezel toward you and disconnect the hazard switch connector at the top edge, plus the climate-control connector(s) behind it. Set the bezel aside face-up on a soft surface so the trim is not scuffed.
Remove the chassis fasteners. Four Phillips-head screws (typically one near each corner of the chassis mounting cage) hold the radio to the dash subframe. Remove all four and keep them together so they are not mixed with the bezel hardware.
Slide the radio out and disconnect. Pull the unit straight forward, then release the locking antenna connector and unplug the multi-pin electrical harness(es) at the back. Pulling the antenna cable straight without releasing the lock can damage the connector.
Locate the S/N. The 14-character serial number is printed on a manufacturer sticker (white or silver, often with a small Pentastar logo) on the top, side, or rear of the chassis, alongside the Chrysler/Mopar part number and barcode. On RA3/RA4 units, note the VP3 or VP4 stamping on the rear that confirms which variant you have.
Tips: photograph the label for a clear, zoomable copy, write down the serial twice and compare for typos (especially zero vs. letter O), and keep the four chassis screws in a parts tray separate from the bezel hardware to avoid mixing lengths during reinstall.
Example: Chrysler 300 serial number label location
Common Serial Number Structures
The 2014 Chrysler 300 RA3 radio serial formats:
T00AM– Harman VP2 RA3 (most common on the 300)T00BE– Continental variantTM9– Older Harman production
Serial is 14 alphanumeric chars. The part number (starts with P05064 or 68) is on the same label — skip it.
Typical Serial Number Formats for 2014 Chrysler 300 Radios
Serial numbers on the 2014 Chrysler 300's factory radios are typically 14 characters long and commonly begin with the letter T, printed on the chassis label together with a Chrysler/Mopar part number. The exact prefix usually depends on which sales-code radio is installed.
RES (Base AM/FM/CD): typically a 14-character alphanumeric string commonly beginning with T, followed by a model/family identifier and a production sequence on the chassis label.
RA3 / VP3 (Uconnect Touch 8.4A, no nav): commonly begins with T00-style prefixes such as T00AM or T00BE, with the remainder being numeric digits to total 14 characters. These T00-family serials carried over from the older RBZ unit into the new RA3 hardware.
RA4 / VP4 (Uconnect Touch 8.4AN with Navigation): commonly begins with TM9 followed by a numeric sequence to fill out the 14-character format. These units are typically found on 300C and SRT8 for 2014.
What to ignore on the label: any S/N or SER prefix, dashes, spaces, and the barcode are formatting only - the value you submit is the contiguous 14-character alphanumeric code. Capitalisation matters, and prefixes can vary slightly between production runs and supplier batches, so always verify the printed value against the chassis label rather than assuming a fixed prefix from another car.
Steps to Unlock Your 2014 Chrysler 300 Radio
- Skip long troubleshooting discussions or service visits - you can retrieve the code online using the radio S/N.
- Identify the serial number. The best place to search is on the unit itself, and sometimes you can see it on the 300's display.
- Enter it into the form above, and the software will identify the correct 2014 300 unlock code.
- After getting it, type it in using 300's radio buttons to release the blockade fully.
- The entire process takes only a few minutes and requires no VIN, documents, or technical knowledge.
Code Entry Instructions
Now that you've generated 2014 Chrysler 300 unlock code from the S/N, you're ready to reactivate the radio.
Some drivers get stuck at this stage because input process can look different across radio versions, but it's usually easy.
When the radio shows dashed lines, it means the unit is waiting for the correct numbers.
Step-by-Step Code Input Guide
Entering the code on the 2014 Chrysler 300 Uconnect 8.4":
- Turn ignition to ON. Screen shows "ENTER CODE" or ----.
- Use the touchscreen to enter each digit of your 4-digit code on the on-screen keypad.
- Radio auto-confirms after the 4th digit — no confirm button needed.
Lockout: 3 wrong attempts cause a 60-minute lockout. Keep ignition ON for the full 60 minutes. Turning off restarts the timer.
Step-by-Step Code Input Guide for 2014 Chrysler 300
Once you have the correct 4-digit anti-theft code for your 2014 300's radio, entering it is straightforward, but you only get a limited number of attempts before the unit forces a cooldown.
Limited Attempt Warning: Mopar Uconnect units (and the base RES receiver) for the 2014 300 typically allow up to three attempts to enter a valid code. After three successive invalid entries, the radio enters a WAIT (or LOCK) state and the display will show WAIT. To exit this state, the ignition must be left in the RUN position with the radio powered for a continuous 30 minutes, after which the CODE prompt returns and a valid code can be entered. Do not power-cycle the radio during the cooldown - it generally resets the timer.
Entry procedure on a Uconnect 8.4 touchscreen (RA3/VP3 or RA4/VP4): turn the ignition to RUN or ACC and wait for the display to show the CODE / ENTER CODE prompt. Use the on-screen numeric keypad to enter each of the four digits in order. When the fourth digit is in, an OK / GO button appears on screen - tap it to submit. If the code is correct, the radio leaves anti-theft mode and returns to normal operation; if it is rejected, the unit will count it as one of your three attempts.
Entry procedure on the base RES single-CD radio: with the ignition in RUN, the display shows CODE. Use the station preset buttons (1-4 or the labelled numeric keys) to dial in each of the four digits, then press the dedicated enter/OK button (or briefly hold preset 5/6 depending on labelling) to confirm. The display will return to normal play mode if the code is accepted.
Tip: double-check the code against your paperwork before pressing OK on the third attempt - if you are unsure, stop, write the digits down, and start the entry over from the first digit instead of risking the 30-minute lockout. Tap each digit deliberately on the touchscreen - rapid double-taps can register an extra digit and inadvertently submit an incorrect entry.
Why Did the Radio Lock and Ask for a Code?
The 2014 Chrysler 300 Uconnect RA3 self-locks whenever power is cut. A removed radio is worthless to a thief.
Typical cause: battery replacement or disconnect. Other causes:
- Blown radio fuse after electrical work or shorts
- Buying the 300 second-hand without a known code
- Battery disconnect for service or repair
- Battery dead from long storage
The code is unique to the radio serial number — not the VIN. Works regardless of vehicle the unit is installed in.
300 2014 Common Radio Problems
The 300's RA3 label shows both part number (P05064... or 68...) and serial. Use only the 14-character serial starting with T00AM, T00BE, or TM9. Watch out for 0 vs. O on the label.
Reach out 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 still shows "ENTER CODE" but won't accept input.
Keep ignition in ON or ACC for the full 60 minutes without turning off. Cutting power restarts the countdown.
If no code prompt appears, the anti-theft isn't active. It only fires after a battery disconnect.
Trigger it: briefly pull the radio fuse, reconnect, turn ignition to ON. "ENTER CODE" shows at boot.
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. Tap each digit on the on-screen keypad. No physical buttons needed. Auto-unlocks after the 4th digit.