U0184 on Lincoln: How to Diagnose & Fix
Lost Communication With Radio
2 Lincoln models · 2 documented issues
U0184 on Lincoln by model: symptoms, diagnosis and fix
Some 2020-2023 Aviators may exhibit lack of audio after rainfall or a car wash together with water in the rear-liftgate area or spare-tire area. Ford TSB 23-2181 directs Aviator-specific inspection of the power-liftgate grommet, margin seal and pushpins, electrical-wiring grommet, rear washer hose, body-hole plugs, BLIS-module seating, and BLIS harness grommets. The bulletin calls for ACM replacement when right-side water is present; it does not establish water damage as the cause of every audio outage.
Common Symptoms
- Lack of audio after rainfall or a car wash
- Water in the rear-liftgate area
- Water in the spare-tire area
- Right-side rear water evidence requiring ACM inspection
How to Fix
Confirm both the audio symptom and rear water evidence, then follow the Aviator inspection sequence in TSB 23-2181. Correct only the leak path found: reseat or replace the specified grommet/strut when required, seat seals and connectors, repair plugs or washer-hose routing, and verify the BLIS module and harness grommets. If right-side water is present, follow the bulletin's ACM replacement step and use the VIN-specific parts catalog application. Dry and inspect affected connectors and trim as directed. Coverage depends on the vehicle's applicable warranty or service plan; this record has no commerce link.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Power liftgate strut / actuator (Aviator-specific, right side per dealer listings) - replace only if its grommet is notOEMLC5Z-14B350-BCross-refA-Premium liftgate power lift support (Amazon B0F2H8CF98, cr$70–$114
TSB 23-2181 parts table lists LC5Z-14B350-B as 'Aviator Power Liftgate Strut' (qty 1, if needed). The bulletin only calls for replacing the strut whose power-liftgate grommet cannot be re-seated by hand; reseating is the first step.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipPhotograph the wet side and first water path before drying; TSB 23-2181 uses location-specific inspection and only conditionally replaces the ACM.
- WarningDo not order an audio module from loss of sound alone; confirm water evidence, repair the leak path, and use the VIN-specific catalog application if replacement is required.
Sources for this issue (1)
First-generation Nautilus owners widely report the SYNC 3 center touchscreen freezing, going completely black, or spontaneously rebooting while driving — sometimes leaving only the backup camera working. Symptoms point to memory corruption in the APIM (Accessory Protocol Interface Module / SYNC module) software rather than the display panel itself, so a black or frozen screen usually traces to the APIM. Distinct from the 2024+ panoramic/center-display reboot recall (25V337), which is the newer multimedia module on the redesigned model.
Common Symptoms
- Center screen freezes / unresponsive to touch
- Screen goes completely black except backup camera
- Infotainment reboots itself while driving
- Apple CarPlay/Android Auto drops or won't connect
- Audio and navigation glitches
How to Fix
Try a SYNC master reset (hold the power/volume button and Seek-Right for 10 seconds) and install the latest SYNC 3 software via USB or OTA. If freezes recur, the APIM module is reprogrammed or replaced by the dealer; updating to the current software level resolves most memory-related lockups. A pending USB drive update can also stop the reboot loop.
Sources for this issue (2)
U0184 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U0184 mean on a Lincoln?
U0184 stands for "Lost Communication With Radio." This network code means a module stopped receiving expected communication messages from the radio/audio module over the vehicle's data bus. When the radio module goes offline or its bus connection fails, this code is logged. On some vehicles the audio module also acts as a network gateway, so its loss can trigger several related communication codes. Symptoms are typically a dead or unresponsive radio/infotainment system; it does not affect drivability. On Lincoln it is documented across 2 models: Aviator, Nautilus.
What are the most common causes of U0184?
The most common causes of U0184 are: Loss of power or ground to the radio/audio module, Blown radio fuse, Wiring or connector fault on the communication bus, Faulty radio/audio control module, Corroded or loose module connector, Network/bus wiring short affecting multiple modules. The specific cause varies by vehicle.
How much does it cost to fix U0184 on a Lincoln?
Repair costs vary widely with the root cause and Lincoln model; each issue on this page carries its own estimate where one is published.
Looking for U0184 on a different make?
View U0184 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.