How long does delivery for 2021 Ram 5500 take?

Codes are sent immediately. In rare cases, Ram 5500 radio code delivery can take up to a day.

You're covered by a 100% money-back guarantee. A proof that the code failed may be required. Review our Refund Policy for complete terms.

How to Get 2021 Ram 5500 Radio Code [Instant]

Step-by-Step Ram 5500 2021 Radio Code Retrieval Guide

Skip long troubleshooting discussions or service visits - you can generate the code online with the radio serial number.
First locate the serial number. It is always present on the unit itself, and sometimes you can see it on the 5500's radio screen.
Enter it into the form above, and the software will calculate the correct 2021 5500 unlock code.
When you receive the code, input it using 5500's radio buttons to release the blockade successfully.
The entire process takes only a few minutes and requires no VIN, documents, or technical knowledge.

Final Step - Enter the Radio Code

Once you receive the correct unlock code based on the S/N, you can restore normal functionality by entering it into the unit.

The code entry process depends on the control layout, but most 2021 5500 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 SAFE displayed on screen.

Detailed Entering Instructions for 5500 2021

To input the unlock code on the 2021 Ram 5500's Uconnect 4C:

The 8.4" display displays "ENTER CODE" after a battery event.
Use the touchscreen keypad to enter each digit of the 4-digit code.
The radio restores after the 4th digit – nothing else needed.

Lockout Warning: 3 wrong attempts = 60-minute lockout. Keep ignition ON. Turning off the ignition resets the timer.

Detailed Input Instructions for Ram 5500 2021

Once the unlock code has been retrieved, the 2021 Ram 5500 Uconnect 4 head unit can be unlocked at the dash without a scan tool or dealer visit.

Limited Attempt Warning: Mopar/Uconnect head units only accept three incorrect tries before the radio enters a WAIT state. If the lockout activates, the radio must remain powered with the ignition in RUN for roughly 30 continuous minutes (the vehicle may be driven during this time) before another attempt is allowed. Repeated wrong-code lockouts can extend the wait significantly, so confirm every digit before pressing it.
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/UCQ) and 12-inch UAX, tap the on-screen number pad to enter each digit and confirm with the OK/Enter touch button.
On the 5-inch UAG base radio, use the numbered preset buttons (1-0) to key each digit of the code in sequence; confirm with the OK/Enter soft key if the unit prompts for it.
If WAIT appears after wrong attempts, leave the radio powered with the ignition in RUN for the documented cool-down period before trying the correct code again.

If a correct-looking code is rejected, double-check the radio serial that was used to retrieve the code, and that the VIN tied to the code matches the truck the radio is currently installed in - a VIN mismatch is the most common reason an apparently correct code is refused.

Can't Locate Your Radio S/N? Follow The Steps Below for Ram 5500 2021

Very important thing to know is that factory radios use a unique S/N to identify each unit.

The anti-theft system links the code directly to the serial.

Unlike vehicle-specific data such as 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 installed afterwards.

Depending on the manufacturer and radio installed in your Ram 5500, the retrieval method is different.

These are the most reliable ways to find it.

Identify Your 2021 Ram 5500's Factory Radio

For 2021 the Ram 5500 largely carries forward the Uconnect 4 family used since the 2019 DT HD launch, although Stellantis began introducing the next-generation Uconnect 5 software on Ram products during this period (initially focused on the 1500). On heavy-duty trucks like the 5500, Uconnect 4 hardware remained the dominant build, and individual trucks may differ depending on production date and trim.

Uconnect 3 / Uconnect 4 (sales code UAG) - 5-inch base touchscreen. Standard on Tradesman and base Chassis Cab. Visual ID: small 5-inch screen with conventional climate controls below.
Uconnect 4C 8.4 NAV (sales code UAQ, Canadian equivalent UCQ) - 8.4-inch landscape touchscreen with built-in GPS, Apple CarPlay and Android Auto (wired). Visual ID: 8.4-inch glass with a dedicated NAV/Map tile.
Uconnect 4C NAV 12-inch (sales code UAX) - 12-inch portrait touchscreen, optional on Laramie and standard on Limited. Visual ID: large vertical screen with split-screen capability.

If your 5500 screen looks visibly different from these descriptions - faster boot, larger app icons, a five-profile sign-in screen - your truck may have received the Uconnect 5 software/hardware build that became standard on Ram HD for 2022, and the procedures in the following sections may not all apply.

View Your Serial on the Radio Display

The method for 2021 Ram 5500 is this:

The 2021 Ram 5500 severe-duty commercial chassis features the Uconnect 4C (RA4) 8.4" touchscreen fitted in the work cab. The serial number is retrievable via Dealer Mode:

Turn ignition to ACC or ON.
Press the bottom-left and bottom-right corners of the physical screen bezel (plastic frame, not glass) at the same time for 5 seconds.
Dealer Mode opens on the display.
Select: System Info → Radio Part Info → Serial Number.

Note Dealer Mode could be disabled on some 2021 5500 units after a software update. If so, physical removal is the fallback.

Screen-Based Serial Lookup Method

2021 Ram 5500 trucks are predominantly Uconnect 4 builds (8.4-inch UAQ/UCQ and 12-inch UAX), and on those head units the same hidden dealer-mode shortcut still exposes the radio serial on screen on most cars. If your truck is one of the early Uconnect 5 builds, the shortcut will not work and you should treat the on-screen method as null - go straight to the chassis-label procedure.

Switch the ignition to RUN/ACC and wait for the Uconnect interface to finish loading.
Press and hold the driver-side temperature UP, the driver-side temperature DOWN and the front DEFROST buttons together for around 5-10 seconds.
If the climate combination does nothing, press and hold the bottom-left and bottom-right corners of the screen for about 5-10 seconds.
Open the radio/system info section in the diagnostic menu to read the serial number on screen.
Photograph the display so the characters can be transcribed without typos.

If neither the climate-button shortcut nor the corner-press combination opens a diagnostic screen, the head unit is most likely a Uconnect 5 build (or has had a software update that removed the menu) and the chassis-label method should be used instead.

Access the Serial by Pulling Out the Radio

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

Most Ram 5500 factory radios include a label with the serial number printed on the housing.

Basic process:

Shut down the car.
Carefully remove surrounding mounting frame.
Loosen screws holding the radio.
Slide outward to inspect the label.

If Dealer Mode is not accessible on your 2021 Ram 5500, the radio needs to be removed to access the serial label:

Turn off the vehicle.
Pry off the surrounding bezel with a plastic pry tool. The 5500's commercial cab trim has friction clips – work from the lower edge.
Remove the mounting screws (Torx T20 or T25).
Slide the unit out to access the serial label on the side or top of the chassis.

Cables don't need to be unplugged while you note the serial.

Manufacturer Label Inspection

The factory radio in the 2021 Ram 5500 also carries a printed barcode/sticker label on the chassis. On the fifth-generation DT HD dash the head unit (especially the 12-inch portrait UAX/UBQ) sits inside a wide centre-stack bezel that integrates the screen surround with adjacent climate and storage trim, so the work needs to be done methodically.

Safety first: turn the ignition fully off, remove the key fob from the cabin, disconnect the negative battery terminal and wait at least 10-15 minutes before touching wiring so the SRS/airbag capacitors can discharge. Avoid yellow airbag/SRS connectors entirely and use plastic trim tools so nothing shorts or breaks.
Tools you will need: plastic trim/panel removal kit, T20 Torx bit, Phillips #2 screwdriver, 7mm socket and short extension, flashlight, clean microfibre to rest the bezel on.
Removal overview (2021 Ram 5500 dash): lift the rubber beauty pad on top of the centre stack to expose two T20 Torx screws and remove them; lift the rubber mat in the small cubby behind the 120V outlet to expose a third T20 Torx screw and remove that as well. With those three screws out, pull the centre-stack bezel rearward starting at the lower edge to release the spring clips around its perimeter. The bezel carries the hazard/HVAC switches, so unclip those harnesses before setting it aside on a clean cloth. Remove the four 7mm screws securing the radio cage to the dash support bracket, then slide the head unit straight rearward and disconnect the antenna lead and the multi-pin power/data connectors at the rear.
Where the serial sits: the serial number is printed on a barcode/sticker label on the top or one side of the radio chassis, alongside the part number and supplier markings. Photograph the label up close and double-check ambiguous characters such as 0/O, 1/I and B/8 before submitting the value.
Tips and professional advice: the 12-inch UAX/UBQ portrait head unit on the 5500 is deeply integrated into the wider centre-stack trim and shares hardware with the climate cluster, hazard switch and 120V outlet bezel - if the trim resists, stop and double-check for hidden screws rather than pulling harder. Owners who are not comfortable working around airbag wiring or releasing the wide integrated bezel should have a professional installer or dealer technician remove the unit instead; an experienced shop typically completes this in well under an hour.

Ram 5500 2021 radio serial number label location

Example: Ram 5500 serial number label location

Common Serial Number Structures

The 2021 Ram 5500 Uconnect 4C (RA4) serial number formats:

T00AM – Harman Uconnect 4C (primary prefix)
T00BE – Continental variant
T0MYD – Newer Harman production (later models)

Radio designation: RA4 (Uconnect 4C, 8.4"). Serial: 14 characters. The Ram 5500 chassis cab uses the same RA4 infotainment as the 3500 and 4500.

Important The serial is not the same as the part number (P05064... or 68...). Only the 14-char serial generates the code.

Standard Serial Number Patterns on This Radio

The factory radios fitted to the 2021 Ram 5500 use the standard Mopar/Uconnect head-unit serial style. The exact prefix depends on the Uconnect tier shipped with the truck and the supplier (Mitsubishi Electric, Continental, Harman or Visteon) that built the unit, so any prefix list found online should be treated as a guide rather than a strict rule.

Uconnect 4C 8.4 (UAQ / UCQ) and 12-inch UAX

Typically a 14-character alphanumeric string printed 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 3 / Uconnect 4 5-inch (UAG)

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

What Caused the Radio to Lock?

The Ram 5500's Uconnect 4C locks automatically after any power interruption. Ram 5500 commercial operators encounter this most often because of:

Battery replacement during service — the most common trigger. The largest chassis cabs carry heavy electrical loads that wear batteries faster.
Commercial upfit electrical work — 5500 chassis cabs receive bodies, cranes, or service equipment which often requires disconnecting the battery, activating the anti-theft.
Blown fuse — frequent in commercial vehicles.
Buying fleet-retired without a known unlock code.

The code is derived from the radio's serial number — not the VIN.

Fixing Common Code Entry Problems for 2021 5500

The Ram 5500's Uconnect 4C uses touchscreen-only code entry — press each digit on the on-screen number pad. No physical preset buttons are used. The radio unlocks after the last digit.

A rejected code on the Ram 5500's Uconnect 4C typically indicates a serial number error. The RA4 label shows the serial (T00AM, T00BE, or T0MYD, 14 chars) and the part number (P05... or 68...) — the serial alone generates the code.

Commercial-use labels may be hard to read. Photograph the label to verify each character. Contact support for a free re-check if needed.

No code prompt means the Uconnect 4C hasn't triggered. To trigger the code screen: pull the radio fuse and reinsert it, then turn ignition ON. The prompt shows on startup.

The Uconnect 4C serial on the Ram 5500 is accessible via Dealer Mode (System Info → Radio Part Info → Serial Number) or on the barcode sticker on the radio chassis after removal. Serial: 14 chars starting with T00AM, T00BE, or T0MYD.

Ignore the part number (P05... or 68...) on the same label.

The Ram 5500's Uconnect 4C enters lockout after 3 wrong entries. The screen continues to display "ENTER CODE" but blocks all input.

To reset: Keep ignition ON for a full 60 minutes. Turning off restarts the countdown. Fleet-managed vehicles must complete the full wait in one session.