How Serial Numbers Work and Where to Find Them on 2019 Jeep Grand Cherokee Radios
The initial step is to locate the radio's S/N.
Depending on the radio unit installed in your 2019 Grand Cherokee, the serial can usually be found either through the display menu or by pulling the unit out and checking the label on the radio itself.
Below are the most common methods to identify your serial quickly.
Factory Radios on the 2019 Jeep Grand Cherokee
The 2019 Grand Cherokee is the WK2 platform in its Uconnect 4C era, with two factory head units split across the seven-trim ladder (Laredo, Limited, Trailhawk, Overland, Summit, SRT, Trackhawk). Both touchscreens support Apple CarPlay and Android Auto - the difference is screen size and whether built-in GPS navigation is included.
Uconnect 4 (sales code UAG) is the 7-inch non-NAV touchscreen, standard on the 2019 Laredo. Visual ID: smaller 7-inch screen sitting centrally in the dash opening with bezel trim filling the surrounding area; CarPlay and Android Auto are present, but there is no factory NAV/Map tile on the home screen. By volume this is the entry-level radio in 2019 Grand Cherokees.
Uconnect 4C NAV (sales code UAV) is the 8.4-inch with built-in GPS navigation and is unique to the 2019-2021 WK2 - it replaced the earlier UAQ on the Grand Cherokee. Standard on Limited, Trailhawk, Overland, Summit, SRT and Trackhawk; optional on Laredo. Visual ID: large 8.4-inch screen filling the dash bezel edge to edge with a dedicated NAV/Map tile on the home screen; on SRT/Trackhawk the home screen also unlocks Performance Pages.
Field check: 7-inch screen with no Map tile = UAG, 8.4-inch with a Map tile = UAV. The UAV also uses a disassociated/separate screen-and-receiver architecture - the 8.4-inch display lives in a separate module from the radio receiver behind the dash, which is the main hardware change versus the older UAQ.
View Your Serial Number via the Radio Screen
The method for 2019 Jeep Grand Cherokee is this:
The 2019 Jeep Grand Cherokee is equipped with the Uconnect 4C (RA4) 8.4" touchscreen. The Grand Cherokee's wide center stack provides good visibility to the large 8.4" screen. Retrieve the serial 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) simultaneously for 5 seconds.
- Dealer Mode opens on the display.
- Navigate to: System Info → Radio Part Info → Serial Number.
Note Press the physical bezel frame, not the glass touchscreen. Should the bezel press fail after a software update, extracting the radio is required.
Before Removing the Radio, Try This Screen Method
The 2019 Grand Cherokee ships with the Uconnect 4 family - the 7-inch UAG and the 8.4-inch UAV NAV. On these units the radio serial number can usually be read straight from the touchscreen via the hidden dealer/diagnostic menu, so it is worth trying the on-screen method before pulling the head unit out of the dash.
Uconnect 4C 8.4 (UAV NAV)
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 7 seconds until the dealer/engineering screen opens. 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. Once inside, browse to the radio/system info section to read the serial number printed on screen, and photograph the screen so each character can be transcribed without typos.
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 7 seconds to enter the engineering menu. Open System Info / Target Main Data to view the serial number on screen, then take a photo of the display before transcribing the digits. Note that on the 7-inch UAG, dealer-mode entry can be less reliable than on the 8.4-inch UAV - if the menu refuses to appear, fall back to the chassis-label method.
Find the Serial by Pulling Out the Radio
If the serial does not appear on display, the next step is checking the radio itself.
Many Jeep radios require physical access to the ID label attached to the unit.
Common approach:
- Start by completely turning off the engine - pull the key out.
- Then remove the radio surround.
- Next, loosen the mounting points and slide the radio forward.
- Look for a barcode label showing the serial number.
If Dealer Mode is unavailable on your 2019 Grand Cherokee, remove the radio to read the serial label:
- Power down the vehicle.
- Pry off the large bezel panel around the 8.4" screen. The Grand Cherokee's substantial trim has friction clips – start at the bottom.
- Remove the 4 Torx T20 or Phillips mounting bolts.
- Slide the unit forward. The Grand Cherokee has decent clearance behind the dash.
Cables can remain connected while you note the serial.
Pulling Out the Radio Unit to See the S/N on the Tag
If the on-screen menu is unavailable on the 2019 Grand Cherokee - for example after a Uconnect software update that disabled dealer mode, or if the 7-inch UAG simply refuses to enter the engineering menu - the chassis label can still be reached by carefully removing the head unit. The Uconnect 4 stack on the WK2 is set into a centre console bezel that also surrounds the climate cluster, so work slowly to avoid breaking trim clips.
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.
Tools you will need. Plastic trim removal kit, Phillips and small Torx bit set, 7mm/10mm socket set, flashlight.
Removal overview. Open the dash storage door above the screen if fitted, then pry the receiver/centre stack bezel free with a plastic trim tool starting at the lower edge and working up the sides; on the WK2 this bezel typically releases through around fourteen retaining clips. Unplug any harnesses on the back of the bezel - including hazard, climate switches and accessory ports - and lay the trim aside on a clean cloth. Remove the screws (typically four 7mm screws, two upper and two lower) holding the radio cage to the dash support bracket, then slide the head unit straight rearward.
Disconnect carefully. Release the antenna lead and the multi-pin power/data connectors on the back of the unit before fully extracting it. On UAV-equipped cars the 8.4-inch display sits in a separate module from the radio receiver, so the receiver is what carries the serial-number label.
Where the serial sits. The serial is printed on a barcode/sticker label on the top or side of the radio chassis, alongside the part number and supplier markings.
Tips. The Uconnect 4 stack on the WK2 is tightly integrated with the climate controls and there is often a module behind the radio that restricts cavity depth - if the bezel resists, stop and double-check for hidden screws rather than pulling harder. If you are not comfortable working around the airbag/SRS wiring or the deeply integrated climate cluster, have a professional installer remove the unit for you.
Example: Jeep Grand Cherokee serial number label location
Common Serial Number Structures
The 2019 Grand Cherokee Uconnect 4C (RA4) serial formats:
T00AM– Most common Harman prefix (RA4)T00BE– Continental versionT0MYD– Newer Harman production (later)
Serial: 14 characters, alphanumeric. Don't use the part number (P... or 68...) from the same label.
Typical Serial Number Formats for 2019 Grand Cherokee Radios
The factory radios on the 2019 Grand Cherokee use the standard Mopar/Uconnect head-unit serial style. The exact prefix depends on which Uconnect tier shipped with the car and which supplier (Continental, Harman or Panasonic) built the unit - the current-generation 4C UAV head units are commonly Panasonic-built.
Uconnect 4C 8.4 (UAV NAV)
The serial is typically a 14-character alphanumeric string printed on the chassis label. It commonly begins with T - frequent prefixes include T00AM, TM9 and TQ1 - or with A2C on Continental-built variants. The serial is usually a continuous run of letters and digits with no dashes or spaces.
Uconnect 4 7-inch (UAG)
The 7-inch UAG normally carries a Mopar/Harman or Panasonic-style serial printed on the chassis sticker, so the label on the unit itself is the authoritative reference. Always copy the serial exactly as printed and avoid guessing characters that look unclear.
Radio Code Input Guide
Now that you've found the radio serial and received the unlock code, the next step is entering it into your radio.
Jeep original head units display a ENTER CODE message when ready for input.
The process is quick, but button layouts and confirmation methods may vary depending on the radio version installed in your Grand Cherokee.
Correct Entering Process
To enter the code on the 2019 Grand Cherokee's Uconnect 4C:
- Ignition ON. Screen shows "ENTER CODE".
- Tap the touchscreen keypad for each digit of the 4-digit code.
- The radio unlocks automatically after the 4th digit.
Lockout: 3 wrong attempts = 60-minute lockout. Keep ignition ON. Cycling the ignition resets the timer.
Detailed Input Instructions for Grand Cherokee 2019
Once the unlock code has been retrieved for a 2019 Grand Cherokee Uconnect head unit, it can be entered directly at the dash - no scan tool or dealer visit required. The Uconnect 4 family uses manual 4-digit entry tied to the radio serial; it is not VIN-only auto-paired.
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 (UAV), tap the on-screen number pad to enter each digit and confirm with the on-screen OK/Enter button. 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.
If a wrong code was entered. If WAIT appears after wrong attempts, leave the radio powered with the ignition in RUN for the documented cool-down period (about 30 minutes; the vehicle may be driven during this time) before trying the correct code again.
Unlock Your 2019 Jeep Grand Cherokee Radio in Minutes - How It Works
Vehicle radios use security codes dependent on the radio unit itself rather than the vehicle model or production year.
- The system uses the Grand Cherokee's radio serial to retrieve the unlock code.
- When you input the serial into the generator, the system identifies the radio unit and retrieves the corresponding code.
- Use the code to unlock the radio immediately.
- This approach saves time compared to traditional methods for 2019 Jeep Grand Cherokee.
Grand Cherokee 2019 Common Radio Problems
The recommended method to get the serial on the Grand Cherokee RA4 is Dealer Mode: press the bottom-left and bottom-right bezel corners for 5 seconds, then navigate to System Info → Serial Number.
- Serial — 14 characters, starting with
T00AM,T00BE, orT0MYD. - Part number — starts with
Por68. Ignore.
After 3 wrong attempts, the Grand Cherokee's Uconnect 4C enters a 60-minute lockout. The screen displays "WAIT". Keep the ignition ON for the entire 60 minutes. Cycling the ignition restarts the wait.
The Grand Cherokee's Uconnect 4C uses touchscreen-only code entry. Enter each number on the virtual number pad. The radio unlocks after the 4th digit — no separate "Enter" required.
Should the Grand Cherokee not show "ENTER CODE" after a power interruption: confirm ignition is ON and wait 15–20 seconds. Check the radio fuse — a blown fuse stops the radio from activating.
When the code fails on the Grand Cherokee'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 (P... or 68...). Only the serial generates the code.
Use Dealer Mode to confirm the serial if the code was rejected. Contact support for a free re-check.
Why Is the Radio Asking for a Code?
Jeep Grand Cherokee encounters radio lockouts primarily from:
- Battery disconnect or replacement — the primary trigger on all Uconnect 4C platforms.
- Complex electrical service — the Grand Cherokee is a feature-rich SUV and maintenance requiring electrical work activates the anti-theft.
- Used purchase — widely traded second-hand, and the code is frequently not passed on at resale.
The code is permanently tied to the radio serial and does not change.