C0499Lateral Acceleration Sensor Range/Performance
- Generic OBD-II code · Chassis
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- C0499 is missing from the accessible J2012 lists. GM bulletin PIP5094 names C0499 next to C0498 without saying what it stands for, so no manufacturer confirms a lateral acceleration meaning; the established code with this title is C0185. The title describes a lateral acceleration reading that is wired correctly but implausible. Saab explains that its ESP unit compares measured lateral acceleration with what the steering angle implies. A Ford patent derives a road-bank angle from lateral acceleration and steering angle, accepts an accelerometer fault only while the car is stable, then disables brake control until the next key-on and warns the driver. The ZF thesis from Linköping detected offset and drift faults of this sensor with model residuals.
- What you may notice
- ESC lamp on, stability control switched off until restart
- Unexpected ESC interventions on banked roads
- Likely causes
- LikelyOffset or drift of the lateral acceleration sensor
- PossibleSensor cluster loose or not mounted level
- RareSteering angle reference not calibrated
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.