What Caused the Radio to Lock?
On Jeep models from this generation, radio lockouts are common because of:
- Battery disconnect or replacement — the most common trigger on all Uconnect 8.4" vehicles. Each battery event activates the anti-theft.
- Dead or drained battery — Jeeps used off-road can drain batteries faster, making it more likely the battery dies and triggers the lock.
- Blown fuse — fuse replacement or failure also causes the lock to activate.
- Used vehicle purchase — these are common in the used market, and the unlock code history is often missing at resale.
The unlock code is tied to the serial number and never changes.
Step-by-Step Jeep Grand Cherokee 2016 Radio Code Retrieval Guide
Vehicle radios use anti-theft codes tied to the radio unit itself rather than the vehicle model or production year.
- Our lookup service works by matching your Jeep Grand Cherokee radio's serial number.
- Once the serial number is submitted, the system identifies the radio unit and generates the code that you need.
- Use the code to unlock the radio immediately.
- The online process is quicker and more accessible than visiting the Jeep dealer.
Serial Number Location Guide for Jeep Grand Cherokee 2016
The initial step is to find and write down the radio's serial num.
Based on the head unit type installed in your 2016 Grand Cherokee, the S/N can be accessed either through the screen menu or by checking the label on the radio itself.
Below are the most common methods to identify your serial the right way.
Radios Offered in the 2016 Grand Cherokee
The 2016 Grand Cherokee carries the WK2 facelift radio lineup forward unchanged. The same three Uconnect head units, the same sales codes and the same visual cues - only the underlying software builds have moved on slightly.
Uconnect 5.0 / RA2 - 5-inch touchscreen, standard on Laredo and base trims. No CD player, no NAV button, capacitive shortcut keys flank the small display. Uconnect 8.4A / RA3 - 8.4-inch touchscreen, optional on Laredo, common on Limited. Capacitive function row across the bottom of the screen and no Nav tile on the home screen. Uconnect 8.4AN / RA4 - 8.4-inch screen with built-in Garmin navigation, HD Radio and SiriusXM Traffic/Travel Link. Standard on Overland, Summit and SRT, optional on lower trims. Look for a Nav tile on the home screen and the SiriusXM Traffic/Travel Link badge in the splash on startup.
Quick tell: screen size first (5" vs 8.4"), then look for the Nav tile to separate RA3 from RA4. None of the 2016 head units have factory Apple CarPlay or Android Auto - those arrive later with the Uconnect 4C generation.
Access Your S/N on the Radio Display
These are the steps you need to follow for 2016 Jeep Grand Cherokee:
The 2016 Jeep Grand Cherokee uses the Uconnect 8.4" (RA3) touchscreen. You can find the serial number using Dealer Mode directly from the display:
Climate Button Method:
- Turn ignition to ACC or ON (no need to start the engine).
- Simultaneously press the Climate Up, Climate Down, and Front Defrost buttons for approximately 5 seconds.
- Dealer Mode loads on the 8.4" screen.
- Select: System Info → Radio Part Info → Serial Number.
Alternative: On the 2016 Grand Cherokee, you can also try holding the Temp Up (red) + Temp Down (blue) buttons for 5 seconds to enter Engineering Mode if the first method doesn't work.
Screen-Based Serial Lookup Method
Most 2016 Grand Cherokee trims left the dealer with the 8.4-inch Uconnect head unit, which supports a hidden dealer menu that can display the radio's internal serial number. Reading it on screen is much quicker than dropping the radio out of the dash.
Uconnect 8.4A (RA3) and Uconnect 8.4AN (RA4)
Place the ignition in the RUN position so the touchscreen is fully booted. Press and hold the driver's temperature UP, temperature DOWN, and front DEFROST buttons at the same time for around 7 seconds. A dealer/diagnostic menu should appear on the 8.4-inch screen.
From this menu, choose the radio-information entries (typically the first options shown). They list serial numbers, software/hardware revisions and similar identifiers. Note the full serial down exactly as printed, including any letters at the start such as T00AM or TM9. Tap Done, or cycle the ignition, to exit the menu.
Uconnect 5.0 (RA2)
For the smaller 5-inch RA2 head unit, an equivalent on-screen serial-number readout is not consistently documented for the 2016 Grand Cherokee. If the hidden menu does not surface a serial on the RA2, the chassis-label method described under the radio-removal block is the dependable fallback.
Pulling Out the Unit to Access the S/N on the Tag
If the serial number cannot be accessed through menu, use the removal method.
Most Jeep Grand Cherokee factory radios include a tag with the serial number printed on the housing.
Process details:
- Ensure the ignition is off.
- Carefully remove surrounding dashboard trim.
- Release clips holding the radio.
- Pull forward to inspect the label.
If Dealer Mode is blocked on your 2016 Jeep Grand Cherokee, this is how to physically remove the radio:
- Pry off the center trim – Carefully use a trim tool to pop off the center stack bezel surrounding the 8.4" screen. Jeep trim pieces are held by sturdy friction clips.
- Remove 4 mounting bolts – Usually Torx T20 or Phillips screws.
- Pull the unit out – Pull carefully to expose the serial label on the top or side of the chassis.
The wiring harness can stay connected while you note the serial number.
Grand Cherokee's Hardware Label Method
If the on-screen method is unavailable, or the radio is stuck on the CODE prompt and you cannot reach the dealer menu, the chassis label is the most reliable source for the serial number on a 2016 Grand Cherokee.
Safety preparation
Turn the ignition fully off and remove the key. Disconnect the negative terminal of the 12V battery and wait several minutes before working near the dash so any airbag-related circuits can fully discharge. Stay clear of yellow airbag harnesses while pulling trim.
Tools you should have ready
Plastic trim/panel pry tools, a 7 mm socket with a small ratchet or driver for the four radio retaining screws, and a phone or camera to photograph the label.
Removal overview
Begin at the lower edge of the center bezel by the climate controls and pry gently outward. The lower section is held by retaining clips rather than bolts. Once it pops free, two screws are exposed - undo them, and then ease the upper bezel that surrounds the radio off the dash. With both bezel pieces clear, remove the four 7 mm retaining screws now visible at the corners of the radio chassis. Slide the head unit out and unplug the wiring harnesses, antenna lead and any USB/AUX connectors.
Where the serial label sits
The serial is on a printed label on the metal housing - typically the top or one side of the chassis. Read the long alphanumeric string next to the barcode and double-check ambiguous characters (O vs 0, I vs 1). Photograph the label as a permanent reference before refitting the unit.
Tips
Reinstallation is the reverse of removal: harnesses back on, four screws home, bezel pieces pressed in until each clip seats, then reconnect the battery.
Example: Jeep Grand Cherokee serial number label location
Typical Serial Number Examples for 2016 Grand Cherokee
The 2016 Jeep Grand Cherokee Uconnect 8.4" is made by Harman or Continental. Standard serial number prefixes:
T00AM– Primary Harman prefix (VP2/RA3)T00BE– Continental modelTM9– First-year Harman production
Radio designations: RA3 (base 8.4"), VP2 (8.4" with Alpine or Harman Kardon audio). Serial: 14 characters, alphanumeric (e.g., T00AM394958584).
Note Don't use the part number (starts with P or 68). Only the serial generates the code.
Standard Serial Number Patterns on This Radio
The 2016 Grand Cherokee could leave the factory with several different head units, each made by a different supplier, so the serial-number style depends on which radio is in your car. The patterns below are the ones most often reported for this generation.
Continental-supplied Uconnect 8.4 (RA3 / RA4)
Frequently shown with a T00AM prefix and a numeric tail, e.g. something resembling T00AM1234567. The prefix sits inline with the rest of the serial on the chassis label.
Panasonic-supplied Uconnect units
Often start with TM9 followed by additional digits or letters. This format has been widely associated with Panasonic-supplied Mopar radios of the Uconnect 8.4 era.
Uconnect 5.0 (RA2) base radio
Also carries a printed serial on its chassis label; however, the prefix can vary by supplier batch, so the safest approach is to copy the full string from the label rather than assume a fixed format.
If the alphanumeric you read does not match any of these examples, recheck that you copied the serial line and not the part number. The serial is normally the longest string on the label and is the one tied to the barcode.
How Code Entry Works on Your Jeep Radio
When you obtain the correct unlock code based on the S/N, you can restore default functionality by entering it into the unit.
The code entry process depends on the head unit design, but most 2016 Grand Cherokee 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 ENTER CODE displayed on screen.
Entering Process Explained
To enter the code on the 2016 Jeep Grand Cherokee's Uconnect 8.4":
- Ignition ON. The screen shows "ENTER CODE" or ----.
- Use the touchscreen number pad for each digit of the 4-digit code.
- Radio restores function after the 4th digit – no confirm button needed.
Lockout: 3 wrong attempts = 60-minute lockout. Keep ignition ON for the entire period. Do not turn off – it restarts the timer.
Step-by-Step Code Input Guide
Once you have the correct anti-theft code for your 2016 Grand Cherokee radio, the entry itself is fast - but the radio will lock you out for half an hour if you keep entering wrong codes, so verify before you start.
Limited Attempt Warning
You only get three attempts. Three wrong codes in a row place the radio in a WAIT state and the screen reads WAIT. To clear it, the radio must remain powered with the ignition in RUN for a continuous 30 minutes. Switching the key off does not shortcut the timer.
Entering the code
Turn the ignition to RUN or ACC so the radio boots and shows the CODE / Anti-Theft prompt. On the 8.4-inch Uconnect (RA3/RA4), tap each digit on the touchscreen number pad. On the 5-inch Uconnect 5.0 (RA2) base radio, enter the digits using the preset (1-6) buttons in sequence. Confirm with the OK/Enter on-screen control or the equivalent hardware button. When the code is accepted, the radio returns to the normal home screen and audio resumes.
If it does not unlock
Stop after the second wrong attempt and recheck the serial you used to obtain the code. Make sure no leading letters or trailing digits were dropped. If WAIT appears, leave the radio powered for the full 30 minutes before trying again.
Fixing Common Code Entry Problems for 2016 Grand Cherokee
If no "ENTER CODE" screen appears after a power interruption on the 2016 Jeep Grand Cherokee:
- Verify that the ignition is in the ON position — not ACC — and wait 15–20 seconds for the system to boot.
- Inspect the radio fuse — a failed fuse will stop the radio from powering on.
- Certain Uconnect 8.4" units may require a screen tap to trigger the code entry prompt after startup.
If the screen stays black, a blown fuse is the first thing to check.
The Uconnect 8.4" (RA3/VP2) on the 2016 Jeep Grand Cherokee uses a touchscreen number pad exclusively — no physical preset buttons are involved in code entry. Once the "ENTER CODE" prompt is on screen:
- Tap each digit on the on-screen number pad.
- The radio auto-unlocks after the final number — no confirm step is needed.
If the touchscreen is unresponsive, restart by turning the ignition off and back on for the system to fully reload.
The recommended way to find the serial on the 2016 Jeep Grand Cherokee's Uconnect 8.4" is Dealer Mode: press and hold Climate Up + Climate Down + Front Defrost for 5 seconds, then go to System Info → Serial Number.
- Serial number — 14 characters, beginning with
T00AM,T00BE, orTM9. Use this. - Part number — starts with
P05or68. Ignore.
The on-screen method is more reliable than the label and avoids any risk of misreading on a physical label.
After 3 wrong attempts, the Uconnect 8.4" enters a 60-minute lockout and shows "WAIT" or "LOCKED". To handle the lockout:
- Do not turn the Jeep off for the entire 60 minutes.
- Turning off the ignition restarts the 60-minute timer.
On Jeep models from this era, the lockout behavior is uniform across all trims. After 60 minutes, try again carefully.
If the code does not unlock the radio on the Uconnect 8.4" usually means a serial number error. On the Jeep Uconnect radio label, you'll find two important identifiers: the serial number (T00AM, T00BE, or TM9, 14 characters) and the part number (P... or 68...). Only the serial is used for code generation.
A reliable approach to confirm the serial on this 2016 Grand Cherokee is through the on-screen Dealer Mode rather than reading the label. Contact support for a free re-check if the code was rejected.