Red triange of death and warning signals!

All those things you mentioned don't sound like a Prius! Have you ever changed the 12v battery? It may be getting week. Trans-axle fluid cooling pump may have stopped and the transaxle is heating up! Hal

 

That's an indication of air in the brake actuator. It could explain the ABS and ((!)) warning lights. Regardless, you are due for a trip to the dealer.

 

Interesting to see the PS warning light which shows the electric power steering system is impaired.

The hybrid vehicle warning light shows a problem with the hybrid drivetrain.

Too bad the dealer service dept didn't at least have a tech obtain the DTC while the warning lights were on.

Check the air conditioning cabin air filter for something dead on it (like a rat.) If the filter is good, maybe something interesting is hiding under the cowl plastic covers (under the windshield wiper arms.)

The brake pedal squeaking sound is a known problem and usually happens when the car is at a high altitude. It may (or may not) help to bleed the brakes. That by itself is not a safety issue.

Maybe the engine is misfiring, most likely because water has entered the spark plug wells.

It is pretty clear that your car needs help, hopefully your dealer will take care of the problems. Good luck.

 

The lack of a transaxle fluid change (esp since your car only has logged 30K miles) would not cause the problems you've listed.

A weak 12V battery or failed inverter coolant pump might possibly cause the skid control ECU warning lights to appear but would not cause the other problems.

Since your car is pretty new and has only logged 30K miles, hopefully the powertrain warranty will cover whatever is wrong (more than one root cause may be present.)

 

Ok thread crasher but same issue. I have the triangle the VSC light and the brake warning light. I checked the 12v and replaced iut it was weak. I the code reste for a half hour then triangle came back and shortly afterwards the brake and VSC. I think the low battery fried my anti skid ECU that my best guess. It throws brake and VSC now with a new 12v battery. Car is an 05 100k on it.

 

If you think it is the ECU, get one from a junkyard. They usually do not go bad, so there are plenty available. You may have to visit someone capable of resetting zero point calibrations if that is the case.

But step one is to see if the codes will simply reset. Many of these are what's called permanent DTCs, meaning that even a battery disconnect will not erase them. You need to jumper pins 4 and 13 of the DLC (i.e. OBD code reader port) and tap the brake pedal 8 times in 5 seconds to reset. If they comes back, then leaving the jumper in place will also cause each warning lamp to output two digit flash codes. For example, ABS 42 will be the ABS lamp flashing 4 times, pause, 2 times. See

http://priuschat.com/forums/gen-ii-prius-technical-discussion/93977-2004-prius-abs-light.html