C1525 on 2016-2022 Mercedes-Benz GLE (GLE 300d, GLE 350, GLE 400, GLE 450, GLE 350 4MATIC, GLE 450 4MATIC) — Torque Sensor Zero Point Adjustment Undone
1 vehicles · 1 makes · $400-$5,000 repair
Most Reported On
C1525 is an OBD-II diagnostic trouble code meaning “Torque Sensor Zero Point Adjustment Undone.” A Toyota/Lexus chassis code in the electric power steering (EPS) system, published in Toyota repair manuals under the heading "Torque Sensor Zero Point Adjustment Undone (C1515, C1525)". Within that pair, C1525 specifically indicates that the rotation angle sensor value initialization has not been performed, while C1515 covers the torque sensor zero point calibration. Toyota is explicit that these DTCs do not by themselves mean a part has failed — the power steering ECU stores them when the required scan-tool calibration is still outstanding, typically after ECU, column, torque sensor, or battery-related service. Symptoms are usually a power steering warning light and heavy or uneven assist. This code is most commonly reported on 2016-2022 Mercedes-Benz GLE (GLE 300d, GLE 350, GLE 400, GLE 450, GLE 350 4MATIC, GLE 450 4MATIC), with repair costs ranging from $400 to $5,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
C1525 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does C1525 mean?
C1525 stands for "Torque Sensor Zero Point Adjustment Undone." A Toyota/Lexus chassis code in the electric power steering (EPS) system, published in Toyota repair manuals under the heading "Torque Sensor Zero Point Adjustment Undone (C1515, C1525)". Within that pair, C1525 specifically indicates that the rotation angle sensor value initialization has not been performed, while C1515 covers the torque sensor zero point calibration. Toyota is explicit that these DTCs do not by themselves mean a part has failed — the power steering ECU stores them when the required scan-tool calibration is still outstanding, typically after ECU, column, torque sensor, or battery-related service. Symptoms are usually a power steering warning light and heavy or uneven assist.
What are the most common causes of C1525?
The most common causes of C1525 are: Rotation angle sensor value initialization / torque sensor zero point calibration not performed after EPS service, Power steering ECU, steering column, or torque sensor replaced without performing the calibration, Battery disconnected or replaced, clearing the stored calibration, Loose or corroded torque sensor connector at the steering column, Failed steering torque / rotation angle sensor, Failed power steering ECU (Toyota says replace only if the code still sets after performing the calibration 3 times). The specific cause varies by vehicle.
How much does it cost to fix C1525?
Repair costs for C1525 range from $400 to $5,000, depending on the vehicle and root cause.
Which vehicles are affected by C1525?
Au7o has documented C1525 across 1 vehicle models from 1 manufacturers: Mercedes-Benz.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.