U0184 on Hyundai: How to Diagnose & Fix
Lost Communication With Radio
2 Hyundai models · 2 documented issues
U0184 on Hyundai by model: symptoms, diagnosis and fix
The dual 12.3-inch screen infotainment system in the Ioniq 5 is prone to freezing, going black, and rebooting while driving. The issue affects navigation, screen-based functions, and the digital instrument cluster. Loss of the driver display while driving is a safety concern. Multiple OTA updates have been released to address stability.
Common Symptoms
- Both screens go black simultaneously
- Infotainment reboots while driving
- Screen freezes and stops responding to touch
- Navigation crashes mid-route
- Instrument cluster flickers
How to Fix
Ensure the latest OTA software update is installed (check in Settings > General > Software Update). A manual reset can be performed by pressing and holding the power button on the center display for 10 seconds. If issues persist after the latest update, the head unit or display may need hardware replacement ($1,500-3,000 at dealer). Most cases are resolved by software.
Owner tips & cautions
- TipAlways accept OTA updates promptly - Hyundai has been actively fixing infotainment bugs with each release
- TipIf the display goes black while driving, press and hold the power button for 10 seconds - the system will restart in about 30 seconds
- WarningFile a NHTSA complaint if the instrument cluster goes blank while driving - this is a safety issue that Hyundai needs to track
Sources for this issue (1)
Palisade owners report the central infotainment/navigation screen going black and unresponsive, taking out GPS, Bluetooth audio, and the backup camera at once, sometimes requiring a costly head-unit replacement. Separately, BlueLink remote start and app functions stop working, often after software updates, forcing use of the physical key. These are recurring software/head-unit and telematics faults documented across owner forums rather than a single recall.
Common Symptoms
- Center screen black/unresponsive (no GPS, Bluetooth, or backup camera)
- BlueLink remote start/app fails after an update
- BlueLink shows signal bars but a red 'no service' indicator
- Wireless CarPlay / Wi-Fi will not connect
How to Fix
Reset the head unit by holding the small pinhole reset next to the tuner knob (~15 seconds with a paperclip), or hold Map + Setup ~10 seconds. Install the latest infotainment software (USB or OTA) and update the BlueLink app; reactivate BlueLink in Setup (support 1-844-258-5656). Persistent blackouts may require head-unit reflash or replacement under warranty.
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 Hyundai?
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 Hyundai it is documented across 2 models: Ioniq 5, Palisade.
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 Hyundai?
Repair costs vary widely with the root cause and Hyundai model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.