U0184 on Mercedes-Benz
Lost Communication With Radio
U0184 on Mercedes-Benz vehicles indicates lost communication with radio. Au7o has documented this code across 1 Mercedes-Benz model — most commonly on EQS SUV. 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.
Common Causes of U0184
- •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
U0184 on Mercedes-Benz by Model
Mercedes-Benz EQS SUV(1 issue)
- MBUX Hyperscreen Blackout and Head Unit Reboot Loop2023-2025
EQS SUV owners report the 56-inch Hyperscreen going black at random - typically after the car has been driven for a while and heat-soaked - with the display sometimes only returning after the vehicle sits switched off for one to two hours. A milder variant is momentary blanking followed by the MB EQ splash screen as the head unit silently reboots. The root cause is a fault in the central multimedia computer; software reloads fix some cars, while others need the head unit replaced under warranty.
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View U0184 across all makes →Frequently Asked Questions
What does U0184 mean on Mercedes-Benz?▼
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 Mercedes-Benz specifically, this code is documented across 1 model.
What causes U0184 on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0184 on a Mercedes-Benz?▼
Repair costs vary widely depending on the root cause and specific Mercedes-Benz model.
Which Mercedes-Benz models have U0184 documented?▼
Au7o has documented U0184 on 1 Mercedes-Benz model: EQS SUV.