Q: Toyota Prius 2012 hybrid system light with master warning light, slip indicator, brake system warning and malfunction

asked by on August 26, 2017

Toyota Prius 2012 hybrid system light with master warning light, slip indicator, brake system warning and malfunction Indicator!!! When i unplug 12v battery terminal and plug in again then there is no warning light appearing but again it comes! What to do????

My car has 93200 miles.
My car has an automatic transmission.

Warning Light is on Inspection $79.99 - $99.99 Get a Quote

The warning lights signify that trouble codes have set and been stored in the vehicle computer(s). Of course, the codes likely reflect the existence of an underlying fault, the severity of which will be unknown until the codes are read by a mechanic and then an actual diagnostic is performed to pinpoint the fault. Codes are merely "clues" to faults; by themselves, codes do not provide a conclusive diagnostic. In your circumstance, you first need a diagnostic to pinpoint the problem(s) and a recommended one would be a warning light diagnostic. If you request that service, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

I have 2012 Lacrosse and I filled up with gas then drove about 25 m. Without gas cap. Do I need to do anything

Engine swap ls400 Lexus 1990 to 1993 1UZ-fe

The engines themselves, that is the blocks and cylinder heads, are identical in both model years. So, they are a direct catalog interchange, have identical castings and so forth. However, the computers for the two years do NOT interchange. That...

Top radiator hose burst now car wont start

For whatever reason, it sounds like the battery is dead. .You will need to have your battery replaced and your charging system checked. I don't know if this has anything to do with the hose breakage, perhaps the technician who...

Blower fan on heater

If you look under the right side of the dash to locate the blower motor for the a/c heater system and disconnect and inspect connector to blower motor and to the resistor. If both look good then you most likely...

Starting in the morning

Cold weather can effect your car in a number of ways. To start, we need to know if the engine is cranking but not starting. If the engine is not cranking, or has a slow crank on cold mornings, your...

Mystery shaking

Hi, thanks for writing in. Given the sporadic nature of the symptoms, and a known head gasket issue, it is likely the engine is misfiring due to the head gasket issues is causing rough running. If the symptoms are felt...

Transmission fluid coming up into water overflow

Hello. The transmission cooler tank may be leaking, causing water to get into the overflow. It is possible that the radiator you just replaced as a leak may need to be replaced again. If the transmission fluid is low, this...

HVAC actuator problems

The actuators are geared to work back and forth. You may have positioned them in a way where they will not work properly. You should have moved the door until they matched the actuator and not the other way around....

Convertible top sometimes works

The Audi A4 conertible top system monitors a total of 10 microswitches and 1 sensor to determine the soft top position and position of the trucklid and cover. What is likely happening is that the status of one of these...

Related articles

The Top 5 Selling Cars in Kansas in 2012
Kansas Kansas sees a varied climate with all four seasons, which means drivers in the area choose a variety of vehicles. In years past, some of the front-runners have included the Ford F-150, Buick and Toyota Camry. 2012’s top five...
A Buyer’s Guide to the 2012 Honda Accord
The The 2012 Honda Accord has a lot to offer. From great fuel economy to comfortable features and a sleek, modern look, it’s no wonder so many people love the Accord. Though, unlike the Civic, Honda has yet to offer...
The 5 Safest Used Cars You Can Buy For Under $20,000
The Subaru Legacy, Honda Accord, Ford Fusion, Chevy Volt, and the Volvo XC60 are five of the overall safest used cars you can buy for under $20,000.