Network, generic

U0559 Invalid Data Received From Radio Transceiver

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Despite the name, the radio transceiver is not the audio tuner but the module that exchanges radio signals with keys and wireless accessories. Ford's name is RTM: on 2021–2022 Bronco Sport, jammed passive-key frequencies or a weak key battery could trigger No Key Detected, solved by placing the key in the console backup spot close to the RTM (SSM 50341); on recent F-150 and Super Duty trucks the RTM uses a new frequency, so only one specific accessory keypad pairs (SSM 54546). Keyless systems commonly work at 315 or 433.92 MHz. U0559 means the RTM's messages arrive but are invalid; U0258 means none arrive. No bulletin names U0559. Keyless entry, remote functions or key detection may fail.

Likely causes

Radio interference or weak key battery producing implausible receiver data
Accessory keypad or remote on a frequency the transceiver does not support
Transceiver software or configuration fault
Radio transceiver module internally faulty

Symptoms

  • No Key Detected or similar key message in the cluster
  • Keyless entry or remote functions work poorly or not at all
  • Wireless keypad cannot be paired

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 transceiver

Related codes

U0258

References: static.nhtsa.gov, static.nhtsa.gov, en.wikipedia.org.