Traction control activating randomly

Glad to hear the used part is working good so far. My used part is hopefully coming today or tomorrow. It'll be nice to have traction control, ABS and regen braking back.

 

Update. Replaced my overseas Random number generator with a used Toyota part that arrived yesterday (couldn't find any locally) and ALL is GOOD!. Took it for a drive last night and another to work today.

Thanks everybody for the help with the issue and the need for a real Toyota clock spring / SAS module.

dave

 

You are not qualified to service this car. For the safety of everybody around you I beg you to stop tinkering with a 3,000 lb battering ram and turn it over to qualified personnel

 

Was that, by any chance, a reply intended for somebody on some other thread? I haven't seen anything from Hokie-Dave in this thread that struck me as that disastrous....

 

Yaw and linear valve calibrations are not done. EBCM will not function correctly. When you pound the brakes at 65mph that car is gonna spin in circles. You are not qualified to service this car. You are a threat to everyone on the road and you don't know it. Take it to the dealer to calibrate and check your work....please

 

If the yaw zero point's not set, there's a C1210 code. If the acceleration zero point's not set, there's a C1336. If the linear solenoid offset isn't learned, there's a C1345.

If you have warning lights and any of those codes, then by all means go and (after pausing briefly to repent for being unqualified and a threat to everybody on the road) do the indicated thing(s).

As far as I can see in Hokie-Dave's posts in this thread, I saw no mention of any brake parts being changed other than the spiral cable and its steering-angle sensor. That doesn't invalidate the currently-learned linear solenoid offsets or yaw/acceleration zero points. You should re-learn the solenoid offset if the actuator, brake pedal, or stroke sensor has been changed, and re-learn the yaw/acceleration zero points if the yaw/acceleration sensor is changed.

The brake ECU doesn't demand any special calibration step for a steering angle sensor. It'll take whatever the angle sensor is saying (within reason) when you are driving straight with no wheel speed differences or yaw, and say "I bet that's zero right there." (I remember in Gen 2 you could sort of see this in the active data list; whenever the car was just turned on, the steering angle would be some puzzling value, and then with a little bit of driving would become zero when driving straight. I've never looked at that on my Gen 3 to see if it shows up the same way.)

However, if you have the advanced parking option, that does have a recalibration it wants if you've changed the steering angle sensor. Consequences of not doing so would be weird parking assistance or the backup-camera guidelines being out of whack.

 

Yaw sensors appear to be operating properly as well as the steering angle sensor. Monitored it during portions of my 500 mile drive this weekend. Both the yaw and steering angle sensor seemed to respond properly to vehicle inputs.

I appreciate your concerns for my well being as well as others.

 

You still have to recalibrate them after doing this job. Just because the sensors work doesn't mean you don't have to recalibrate. You have to put a jumper between the terminals for the procedure. Please refer to the manual. It's a PDF and the search function will reveal the procedure. The manual is 7400 or so pages. Just search. You have to do this