My vehicle began to display the vsc (vehicle stability control) light, constantly on, last week when i turned it on. several days later the brake light and abs light also became constantly on. i decided to take it to the nearest toyota dealer and they stated that the vehicle is giving the following codes: c1203 - ecm communication circuit c1232 - deceleration sensor c1336 - zero point calibration of deceleration sensor undone the service manager told me that they were going to try to re-flash the computer and calibrate affected items but if it wasn't possible that the sensor assembly, yaw sensor was bad and needed replacement, totaling $1305. 2 hours later he called me back to tell me that they couldn't re-flash the computer and that the issue is not the sensor assembly, yaw sensor but the abs actuator assembly, totaling over $2700. i'm reporting this since i've seen a bunch of similar cases but nothing concrete from toyota. i really don't know if this issue is un-safe or not since there are no physical symptoms except not having abs nor traction control.