Engine lights and codes and more lights!

So, does the car run? You said the hybrid system doesn't seem to be engaging. If it runs enough to go to Midas, the hybrid system would have to be engaging. Often many codes mean nothing because of some initial problem. Don't be afraid to take it to the dealer, reasonably speaking they are equipped to understand the fault. In any case your car is probably still in hybrid warranty. There is a known problem with the hybrid inverter that had a software recall and potential replacement if necessary. So go to the dealer.

"Hybrid-Related Component Coverage [1] Hybrid-related components, including the HV battery, battery control module, hybrid control module and inverter with converter, are covered for 8 years/100,000 miles. The HV battery may have longer coverage under emissions warranty."

"Powertrain Coverage[1] 60 months/60,000 miles (engine, transmission/transaxle, front-wheel-drive system, rear-wheel drive, seatbelts and airbags)."

 

welcome!
couple things, test the 12 volt, and take it to toyota for a proper scan.

 

See above. If the battery is original, change it. 5 years gets you your money's worth.

 

What does the dealer have that Midas doesn't to help diagnose problems? I'd presume (based on other manufacturers) they have a computer that hooks up to your OBD2 port and the cloud and a display that gives a list of probable causes in the order of probability and gives explicit instructions to the mechanic on how to troubleshoot by following a flow chart which gives "use this tool, do these tests, look at this result and based on the result do this next" flow charts.

Shotgunning (just throwing parts at the problem) isn't the most economical approach unless you get very lucky. Often one fault will be the cause of multiple faults.

 

idk what midas has, but tech stream is the only prius specific software.

 

I would get your LV 12v battery load tested. I know you said it was replaced 12 months ago. But if it was let to run down flat it may be damaged. Also if your charging circuit DC to DC converter, which steps down the high voltage to that of the 12V battery ok?
I have seen 12v lv battery's give up a whole range of codes if the battery is failing.
This is due to the voltage going low when a load is applied.

 

Good information.

 

During normal driving last night, I was stopped at a red light, the moment I hit gas,

4 Dashboard lights come on and staying on:

• Check Engine
• Hybrid System
• Slip Indicator
• Brake System

Any idea what could be the problem?

I will try to get the codes later and post here.

 

What could be the problem? Check engine light could be a fault code registered on the power train(engine or emissions related).

Hybrid system. Any problem with any of the hybrid Conponents, would trigger the check hybrid system.

Slip indicator,fight mean, one or all the tires not properly inflated, or there isn't grip between the surface and the ground.

Brake light, could be a sign of low brake fluid, or the brake level sensor is malfunctioning.

Sometime, a held down parking brake might trigger that.


Dxta

 

That will help a lot. Take it to the dealership and they will for sure get all the codes, and propose a course of action.

What's the miles; could be under warranty.

 

2012 Prius v level 3, 110,000 miles. Bought new in Nov 2011. My friend have mini-vci cable and tech stream software that come with it from ebay. What is way to get the codes (or clear them). My friend will be here in couple hours, but he never used the cable or software himself.

 

Hybrid warranty expired at 100K miles it looks like.

 

Using techstream from my friend, I got 2 codes for the Hybrid system. P0A94 DC/DC converter performance and P324E MG-ECU Power relay intermittent circuit. Any one got any suggestion what could be wrong? Thanks.

 

Read this. T-SB-0036-16

 

Thanks for the quick reply, I will read it in detail, but I have already exceeded 100K by close to 10K. Here are some more details I got, is this something I can order parts and work on myself?

 

Detail screen shot on error codes.

 

Here is an update for anyone that is interested. I cleared DTC, only P0A94 came back, I have inverter type B. sub code 553 and 557. According to TSB, IPM needs replacement. I found this info, seems I should be covered, but I never got notification from Toyota.
Sorry link won't post

 

My question now is "Will it be safe to drive it to Toyota dealer now?" I know IPM is bad and needs replacement, so car will not go into hybrid mode, but gas engine starts just fine, so can I drive it in gas only mode to dealer. (about 10 miles)