Chassis, generic

C0499 Lateral Acceleration Sensor Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Offset or drift of the lateral acceleration sensor
Sensor cluster loose or not mounted level
Steering angle reference not calibrated

Symptoms

  • ESC lamp on, stability control switched off until restart
  • Unexpected ESC interventions on banked roads

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–500
Time0.5–2 h

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

Parts involved

lateral acceleration sensoryaw rate sensorabs control module

Related codes

C0185C0498C051CC0497

References: patents.google.com, diva-portal.org, saabwisonline.com, static.nhtsa.gov.