2007 Prius Red Triangle while driving.

Welcome to PriusChat!!

The red icon in the upper left corner of the MFD could be the give away, how often do you check the engine oil and fluids in the vehicle?

Best to check the engine oil on a level surface, and if possible after the vehicle has sat for a period of time, or overnight.

Lack of regular vehicle maintenance, and especially low engine oil levels will kill a perfectly usable prius fairly quick.

You can learn what the various dash warnings and symbols mean by reading the manual.

If the vehicle didn't come with a set of manuals, you can find them at Toyota Warranty & Toyota Manuals | Toyota Owners

 

You need to get some oil in the engine pronto!
Some level of damage has already been done by driving with low oil.

 

Hi @Danni,

That red icon in the upper left corner of the multi-function display means you're experiencing low oil pressure, which can very quickly lead to the death of an engine. I would recommend NOT driving the car at all, or even starting it again, until the oil level is checked and corrected.

Low oil pressure does not necessarily mean NO oil pressure, so your best option is to top it off and fire it up. Keep a close eye on oil level every day or two for a week or so to see if you're experiencing abnormal consumption. Toyota considers excess consumption to be burning more than 1 quart of oil every 600 miles.

Seeing this icon means immediate attention is needed:

 

Every time those lights go on it means something is wrong and codes are stored so the mechanic can find out what's wrong. You can use Dr. Prius app to read the codes and the device you need to do that is inexpensive. Learn more here: Hybrid battery diagnostic and repair tool for Toyota and Lexus