"Check engine" light on/Dashbord doesn't light up

The mfd screen where the camera shows didn't turn on or the speedometer didn't come on?

Check engine could be your oil being low

 

There is an tsb extended warranty on the speedometer not turning on. Your dealer should know about it.

They just have to be told that happened, doesn't have to happen in their presence. The replacement is free.

Not sure why your camera doesn't work unless your car didn't think it was in reverse. Probably related to the speedometer not turning on

 

The combination meter not turning on is a serious issue. You might be able to get toyota to tow your car in for free.

You should still check the oil, it might be too full

While you're at it, check your 12v battery too

 

If the battery is 2 years old, chances are that's not the problem, unless it's drained. Doesn't explain the combination meter not turning on if the car has started. You would need a multimeter to check the voltage reading.

 

You don't need to diagnose. Just tell them the combination meter did not turn on, there is a tsb on the issue for a replacement. They have to take your word

Google the tsb on combination meter. Print it out if you have to.

Read this:

Luscious Garage | Blog | Prius Dash Lights Out - Combination Meter Warranty Extension

According to the TSB, towing is done at no charge too.

 

just check your oil level, if there is too little or too much oil in there, it could light up.

I would solve the combination meter problem first, then see if the lights return. One problem at a time.

 

Many things can cause "check engine". Like a loose fuel cap.

I read if it's not "blinking", then it should be safe to drive. It's usually emissions related.....

 

if its full of oil and coolant, it should be safe to drive if you must, but have someone follow you to the dealer just in case.

 

>>While trying to go in reverse, the camera did not work. ...It's obviously winter and it snowed last night (in case that might be a factor).

This is probably dumb, but any chance the camera lens is covered with snow?

 

The camera doesn't work when the combination meter is blacked out because the indicator doesn't know it is in reverse.

Your car will also be hard to power off. You will have to hold the power button for 4-5 seconds to power off.

It will intermittently start working again when it warms up but will also fail again and get progressively worse.

It will function perfectly when you get to the dealer Take a video for proof to make it easier and less hassle.

 

The problem with the combination meter is internal in the circuit board where a solder was done insufficiently. As circuit boards age the solders become weak and as they heat and cool they expand and contract. When it is cold the solder contracts breaking contact which causes the odometer to go black. As it warms up the contact is made again but the frequency of good contact becomes less and less until it doesn't work at allBecause the computer cannot read the odometer it is unable to determine if you are parked or going 100MPH or if you are in P R N or D so it will not turn off sometimes unless the power button is held.