HELP I have a 04 prius , have had no problems til now, it has 86k on it , while blending in with traffic on freeway , not at full throttle by the way, clear dry road, the wheel slip light will start to flash and will not go more than 60-65 mph under full throttle. No codes show on OBD reader. Tire sizes are the same. Wheels are not slipping, but indicator says they are. Any help is welcome, has any body else had this problem?
Check for mismatched tire size. If one wheel rotates faster (or slower) than the others, you will have this problem. JeffD
Suspect wheel speed sensors. A normal code reader will not pull codes for this. You need to jumper pins 4 and 13 on the OBD DLC and turn the car on to get the warning lamps to flash out 2 digit codes. Search here for more info.
