Network, generic

U0525 Invalid Data Received From Door Window Motor C

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Data from window motor C include what the door controller needs for automatic closing, which in the United States falls under FMVSS 118. A window able to close without the switch being held must stop and reverse before it presses on a test rod of 4 to 200 mm with 100 N or more, and then open again by at least 125 mm or far enough for a 200 mm rod. If the reports from motor C are corrupt, the controller can no longer rely on that reversal, so a cautious design blocks one-touch and remote closing for this window. No manufacturer documents U0525 or names the door behind C. Raising and lowering with the switch held usually still works; U0224 is the lost-communication partner.

Likely causes

Motor C electronics sending corrupted status
Voltage drop at the motor during start-up (weak battery, poor ground)
Chafed LIN wire in the door harness

Symptoms

  • Automatic closing on locking does not close this window
  • Window only operable with the switch held

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–450
Time0.3–2 h

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

Parts involved

door window motor c

Related codes

U0224U0524U0526

References: law.cornell.edu, nxp.com.