ABS Traction control and break light

On my 2017 Toyota Tacoma I have been taking it to the Toyota dealership and many other locations and they still can't seem to figure it out. I currently have the Abs traction control light and brake light on which is causing the speedometer, blind-spot monitors, and off road package not to work. When it gets really cold sometimes the brake light turns on and then the speedometer starts to work. I would like to know if anyone else has had this problem and would like information on how to fix it. Thank you for any help.

 

Did they replace the crank position sensor CPS? (CPK)

 

On the notes they gave me on what was done doesn't have anything on the CPK what is that?

 

There was a TSB for it. You'll need to see if your truck was affected.

G.

 

What is TSB? How do I check to see if my Truck was affected?

 

Technical Service bulliten. It's issued instead of a recall for relatively minor problems. Do a quick search. I don't remember which model years were involved with the Crank Position Sensor. My 2016 did get a new one.

G.

 

Was there a resolution for this? I have a 2018 that just started doing the same thing. BRAKE, ABS, Traction Control lights, and pre-collision lights are all on. Also my speedometer doesn't work.

 

Rear ABS harness is common for this.

 

Visually the rear harness checks out. Is there any way to get to the upper connector of the harness to do a continuity check?