Skewed electronics on dash lights

That's an excellent question. I wouldn't want to assume they're meaningless. When you say your mechanic has checked, is that mechanic at a Toyota dealer, or at a shop that has Toyota Techstream to check with?

-Chap

 

Your mechanic is using questionable equipment.
Go to a Toyota dealer or a shop that uses Techstream software; software designed for Toyota and approved by Toyota.

The car absolutely has codes stored due to the steady appearence of : Red Triangle (Master Warning Light) and ABS.

Low tire pressure light comes on when

1) The TPMS sees a difference of 25% or more from the last system memorization/reset; you have ruled this out, assuming you checked each tire, and report no PSI difference.
2) A wheel mounted TPMS sensor has a dead battery and is no longer reporting the tire pressure for that wheel; this is likely your situation. A tire shop can check this and so can a shop using Techstream.​

Given the model year of 2006, the TPMS batteries are 12years old; you got a lot of life out of those batteries; average life expectancy is 7-10 years. The batteries are not replaceable. You have to replace the entire wheel mounted TPMS unit. Costco is a very good option to go when getting new tires.

Do NOT drive the car to Tennessee in its current condition, until repaired.

 

As long as the car can be driven, it sure can be driven to the dealership

 

Unfortunately there not false.

TPMS light came on because the integrated battery in the denso sensor in the tire died. Right on schedule. The last about 10 years. The sensor is dead & no longer communicating with the car so its throws that orange alarm on the dash cause its not getting any response from it. No comm the system says it’s dead and launches its alarm on your dash. It cannot be repaired must be replaced. Next tire change install 4 new ones. Amazon.com Denso 550-0103. $35. each.

My TPMS light has been on for quite some time. Waiting for next new tires.

If the car has shown the lights your saying its throwing your mechanics code reader is not pulling any hybrid codes. Not many auto parts stores have one that works on a Prius either apparently.

Red triangle is the Master Caution alarm something fatal has occurred and I would not drive it far.

Most likely the Inverter coolant pump died. Open the cap on the inverter coolant reservoir the white tank next to the silver inverter box. Slim white reservoir. Look inside at the red fluid with a flashlight while the car is in READY. READY means the car is on the engine may or may not be on but the car is ready to
go. Should see very good fluid movement kinda like its boiling. If the fluid is not moving at all the pump died. Pray its that.

Or the Hybrid battery has died. $$$$.

Or the ABS module has died but you would know that as the brakes would feel bad.