Network, generic

U0261 Lost Communication With Seat Control Switch Module B

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Seat control switch module B is a further switch unit with its own electronics, serving another seat or seat row; which position the letter stands for is not published. Lincoln bulletins show how closely switch and seat module interact: power seats in the second row of the 2025 Navigator did not slide when the switch was pressed, the rear seat modules SCMK/SCML held B167F:11, and the cure was to run their configuration routines in the scan tool (SSM 54226); on 2022 Aviators missing lumbar settings on the screen were traced to seat module software or a wrong seat switch part level (SSM 51056). So a switch complaint may be a seat module setup issue. No manufacturer documents U0261 publicly. Usually the seat module notices when switch B stops reporting, and that seat then ignores its keys. Switch A is U0260, C and D are U0271 and U0272.

Likely causes

Seat module configuration or software not matching the switch (Lincoln SCMK/SCML)
Loose connector or chafed wire under the seat or in the trim of the second switch
Wrong part level of the seat switch after production or replacement
Internal failure of switch module B

Symptoms

  • Passenger or rear seat does not move with its switch
  • Seat settings missing in the center display

Repair estimate

DifficultyEasyDIY possible
Parts and labour€0–400
Time0.2–1.5 h

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

Parts involved

seat control switch module bvehicle bus wiring

Related codes

U0562U0260U0271U0272

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