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Home / DTC / U0525 — Invalid Data Received From Door Window Motor C

U0525 — Invalid Data Received From Door Window Motor C

Detailed page for trouble code U0525.

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22,457specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
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Code

U0525

Generic U — Network/User

Invalid Data Received From Door Window Motor C

Brand: Generic
Type: U — Network/User
Views: UK: 16 EN: 24 RU: 14
AI status
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Page language: EN

Causes

  • Faulty door window motor control module C (internal fault)
  • Damaged or corroded connector at the motor or module
  • Open, shorted or high-resistance wiring on power, ground or communication lines
  • Loss of ground or supply voltage to the motor module
  • Faulty body/control module (receiving module) or software bug
  • CAN or LIN bus interference, bus termination problem or short to battery/ground

Symptoms

  • One door window may fail to operate, operate intermittently, or move erratically
  • DTC U0525 stored and possibly other related U-codes or B/P codes present
  • Other body-network features on same bus may be affected or show faults
  • Driveability typically unaffected, but convenience features may be disabled
  • Possible blown fuse for the window circuit if power short exists

What to check

  • Scan for all stored codes in all modules; record freeze frame/live data
  • Note whether code is current, pending, or intermittent and whether it is relearnable
  • Inspect door/window connector(s) and wiring for corrosion, pin damage, or water
  • Verify battery voltage and ignition supply at the motor module connector
  • Check chassis and module grounds for tightness and corrosion
  • Verify presence and integrity of communication bus (CAN/LIN) at motor and BCM

Signal parameters

  • Communication bus: CAN (two-wire differential) or LIN (single-wire) depending on vehicle — expect clean differential CANH/CANL waveforms or LIN idle level
  • Expected supply: ~12 V battery feed at ignition-on for motor control module; verify with multimeter
  • Ground: low resistance to chassis ground (
  • Typical message update rate: door/window status messages often 5–50 Hz (vehicle-dependent)
  • Data payload: position/speed/status bytes and a checksum or CRC on some systems — invalid checksum indicates corrupted data

Diagnostic algorithm

  1. Retrieve and save all codes and freeze frame data from scan tool; note related U, B, or P codes.
  2. Duplicate symptom: operate the affected window while monitoring live data/messages from the motor module and BCM. Note whether U0525 sets immediately or after an action.
  3. Visually inspect connectors and wiring at the door hinge, door switch, and window motor for damage or corrosion. Repair any damage.
  4. Verify battery voltage and ignition feed at the motor module connector with the harness connected and engine/key in required position.
  5. Check module ground(s) for continuity to chassis; clean and tighten as needed.
  6. With a scope or good-quality scan tool, observe the communication bus (CANH/CANL or LIN) at the motor module and BCM while operating the window. Look for noise, missing frames, dominant/idle levels, and valid message timing.
  7. Perform a backprobe continuity check between the motor/module connector and the BCM connector for power, ground and communication wires; repair any open/shorts.
  8. If wiring and power/ground are good, try swapping or bench-testing the suspect door window motor control module (if serviceable) or substitute a known-good module if available.
  9. Update module software/calibration per manufacturer instructions if a software mismatch is suspected.
  10. After repairs, clear codes and verify proper operation and that U0525 does not return during extended test cycles.

Likely causes

  • Wiring/connectors between the door window motor and the main body/control module
  • Door window motor control module C hardware failure
  • Poor ground or low battery/ignition supply to the motor module
  • Bus communication fault (CAN/LIN) or missing/incorrect message format
  • Software calibration or programming mismatch after module replacement

Fault status

⚠️ Status
Invalid data received from Door Window Motor C — communication/data integrity fault detected between the motor control module and the receiving module.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

U0520 U0521 U0522 U0523 U0536 U0100
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