Harman R1 EXT ER Asking for a Code? Get It Back Now
Harman | Chrysler | Instant Retrieval
Read the full refund policy.
Supported Serial Prefixes
| Serial Prefix | Status |
|---|---|
T0012 |
Supported |
T00BE |
Supported |
If your serial starts with any prefix above, we can recover your code.
Your code in three steps
One number, three steps, a couple of minutes.
- 1 Get the serial off the radio Look for it on the sticker on the housing. The radio normally has to come forward a little - the wiring can stay plugged in.
- 2 Put it in the form on the left Copy it character for character. We check the format before checkout, so a typo never costs you anything.
- 3 Your code lands in seconds The code is delivered automatically, day or night. Enter it on the radio and the anti-theft screen goes away.
If it does not work, you are refunded in full.
This is an example label - the one in your car sits in the same place and looks much like it.
How to Identify the R1 EXT ER
Line up the design, controls, display and features listed below with your factory-installed radio - the R1 EXT ER is easy to tell apart once you know what to look for.
What the R1 EXT ER looks like:
- 8.4" touchscreen in the centre of the dash
- Built for the Europe market
- Sales code ER on the chassis label
- Serial number starting with T0012, T00BE
This is probably your radio if:
- the chassis label carries the ER sales code
- the serial on the label starts with T0012, T00BE
- the vehicle was built between 2018-2022
- the screen is the 8.4" touchscreen fitted to the R1 EXT
External-mount means the screen sits on top of the dash, not flush with it. If your screen is flush-mounted, you have an internal-mount R1 INT NA variant.
What Is the R1 EXT ER Radio?
The R1 EXT ER is an original factory-installed infotainment system developed for selected Chrysler vehicles. Designed to provide reliable audio playback and vehicle integration, this unit may also offer Bluetooth connectivity, touchscreen controls, CD/DVD playback, navigation or multimedia support, depending on the exact configuration.
R1 EXT ER is the externally-mounted Uconnect 4C NAV 8.4 head unit for European markets - 8.4-inch touchscreen on a stalk-mounted bezel (the screen sits proud of the dash rather than recessed). Modern Uconnect 4C UI with Apple CarPlay/Android Auto, DAB+, built-in EU maps.
The R1 EXT ER was installed in various Chrysler models between 2018-2022. It was commonly fitted to vehicles built on the Harman multimedia platform and is still one of the more recognisable factory radios of that period.
Features you may find on the R1 EXT ER:
8.4" touchscreen
AM/FM radio
Apple CarPlay and Android Auto*
CD playback
AUX and USB input*
Steering wheel control support
Anti-theft security code
*Availability depends on the vehicle configuration.
Like many factory-installed radios, the R1 EXT ER is secured with an anti-theft system. If power is interrupted after replacing or disconnecting the vehicle battery, the unit may request the original radio code before it can be used again.
How to Read the Serial Number Off Your R1 EXT ER
The code is calculated from the radio's own serial number, so that number is the only thing you need before ordering. It is printed on the factory sticker of the unit itself, not in the vehicle documents.
On the R1 EXT ER: Label on the top of the chassis, behind the screen module. The R1 unit comes out of the dash as a single assembly - the screen and the radio chassis are joined and must be removed together.
How to reach the number:
- Ease the radio out of the dash - most units need a pair of release keys, which cost a few dollars online.
- Read the serial from the factory sticker on the housing, beside the barcode.
- Type it into the form exactly as printed, with no spaces or dashes.
Serial number location on this unit
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Harman |
| Radio Family | R1 EXT |
| Variant | ER |
| Market | Europe |
| Vehicle Brand | Jeep / Ram |
| Production Years | 2018-2022 |
| Display | 8.4" touchscreen |
| Serial Prefixes | T0012, T00BE |
The exact functionality of the R1 EXT ER depends on the vehicle it was installed in. Some versions include full multimedia features like navigation and Bluetooth, others ship in a more basic configuration. Features vary by production year, trim and regional specification.
Which Vehicles Use the R1 EXT ER?
| Vehicle Model | Typical Production Years | Notes |
|---|---|---|
| Jeep Wrangler JL, Gladiator JT (EU) | 2018-2022 | |
| Jeep Cherokee KL refresh, Compass (EU nav trims) | 2018-2022 | |
| Ram 1500 DT (EU conversions) | 2018-2022 |
Some vehicle models were available with more than one factory radio depending on trim level, production year or regional market. Always verify your radio model before ordering a code.
Find Your Part Number 3
Every reference below is covered by this service. Find yours on the factory sticker of the radio to confirm you are on the right page.
68426042AA
68426042AB
68426042AC
The part number is printed on the label on top of or on the side of the radio chassis, usually next to the serial number. If yours appears above, the R1 EXT ER is the correct page.
Typing the code into your R1 EXT ER
The code goes straight into the radio, not into the car's menus.
- Switch the ignition on and let the radio boot to its security screen.
- A keypad for the code fills the middle of the screen.
- Tap the four digits of your code in order.
- Verification happens by itself once the fourth digit is in.
- A correct code clears the lock screen and the audio comes straight back.
Troubleshooting the R1 EXT ER
The screen shows a wait timer
A countdown means the anti-theft system is holding the unit. Leave the ignition on until it clears. Three wrong codes triggers a "PLEASE WAIT" screen with a 60-minute timer (R1 uses the longer NTG4-era timer rather than the 30-minute Uconnect 8.4 timer). Power must remain applied for the timer to count down.
Where the number actually is
It is printed on the housing, so the unit normally has to come forward to read it. Label on the top of the chassis, behind the screen module. The R1 unit comes out of the dash as a single assembly - the screen and the radio chassis are joined and must be removed together.
The radio locked itself again
Nothing is broken. Any interruption to the 12V supply brings the lock screen back. Loss of 12V power. R1 modules are more tolerant of brief power dips than older Uconnects but still lock on full battery disconnect or jump-start failure.
I am not sure I have the right variant
Close relatives of this unit look almost identical from the driver's seat. External-mount means the screen sits on top of the dash, not flush with it. If your screen is flush-mounted, you have an internal-mount R1 INT NA variant.
The code belongs to the radio and never changes, so keep it somewhere safe once you have it.
R1 EXT ER FAQ
What Is Included
The original code on screen within seconds of payment, emailed to you as well.
Full money-back guarantee if the code does not unlock your radio.
Available 24/7 - no booking, no dealer visit, no towing.
Works every time - the code stays valid for the life of the radio.
Other OEM Radio Models
These units are often mixed up with the R1 EXT ER. If the details above do not match your radio, check one of these instead.