Network, generic

U0258 Lost Communication With Radio Transceiver

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Despite its name this unit has nothing to do with the audio tuner: Ford's radio transceiver module (RTM) handles the wireless link to keys and remote accessories. On the 2021-2022 Bronco Sport, Ford traced No Key Detected messages to blocked key frequencies or a flat key battery and advised laying the key in the forward console tray, the backup position close to the RTM (SSM 50341); RTMs in recent F-150 and Super Duty trucks work on a changed frequency, so only one accessory keypad part fits (SSM 54546). No manufacturer documents U0258 itself publicly, nor a timeout. A receiver such as the body control module would set it when RTM messages stop on the bus. Keyless entry, key detection at start-up or remote functions may then fail; corrupt RTM data are U0559, a remote start module is U0254.

Likely causes

Transceiver without power or ground, or loose connector
Open or shorted data line between transceiver and its master module
Transceiver software or configuration not matching after replacement
Internal failure of the radio transceiver

Symptoms

  • No Key Detected or key not recognized at start-up
  • Keyless entry, remote locking or keypad without function

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–600
Time0.3–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

radio transceivervehicle bus wiring

Related codes

U0559U0254U0167U0140

References: static.nhtsa.gov, static.nhtsa.gov.