HELP!! 06 Prius stops accelerating, all warning lights on icluding hybrid system warning light

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Every time you disconnect the battery, you're clearing the stored codes (DTCs), this tricks the vehicle into thinking everything is ok again. What you're really doing is kicking the can down the road, and potentially making the problem(s) worse. Eventually this 12v battery trick will no longer work, leaving you stranded or worse.

Those displayed warning lights are trying to tell you something bad has happened, do you have a copy of the owners manual?

You will need an OBD2 reader/scanner, which can help direct you towards the problem, instead of guessing. See if one of the local auto parts stores has a 'Toyota Hybrid' compatible OBD2 reader/scanner that you can borrow. If none of the available scanners offer useful DTC codes, then try another location or auto parts chain as they all carry different scanners.

If you can't find someone with a OBD2 reader/scanner, purchase a OBD2 blue tooth adapter online for $2 and download the appropriate free phone app (the phone will need blue tooth compatibility to communicate with the adapter). Once you have the codes read, be sure to write them all down and post them here for additional help.

At a minimum, it sounds like your HV battery has failed or is failing, and driving it around will only make it worse. It would be best to fix the existing HV pack or find a replacement pack. Of course there could be other problems, but you will first need to read the codes (DTCs).

 

This is the droid version : v1.5 ELM327 Bluetooth OBD2 Code Reader Scan Diagnostic Tool ANDROID TORQUE New | eBay

 

Keep in mind, the problem w/ the bluetooth OBD2 readers is that they can NOT read all the error codes, and are unable to do maintenance procedures (bleed barkes, crank the engine, activate CHRS pump, etc).

If you want to be able to read ALL codes and do maintenance, it is in your best interest to get "mini VCI" w/ Techstream from Amazon ($25+). You will get an imitation USB cable and a hacked copy of the Techstream software. BTW, Techstream is the official software made for Toyota/Lexus, and used at all the Toyota/Lexus dealers. Install is easiest on a 32bit OS Windows laptop. If you don't have one, ask friends/family if they know someone in IT. This person will likely have some laying around, and might be able to donate to you. Mac install possible, just search. This laptop should only be used for Toyota/Lexus diagnosis purposes. No email, banking, etc, out of security concern.

You will probably have to replace a module or two; cheapest option, that is unreliable. It may last hours/days/weeks/months. A breakdown can occur at the most inopportune time/location. Lots of people advertise this service online.

The most reliable repair option is replacing w/ NEW OEM ($1600+) or 2k1Toaster's cylindrical option ($1600). You say "I have nowhere near enough money for a whole new hybrid battery," but what prices were you told? Read Post #9 & #11, to get pricing ideas and where to start looking. Pricing was from Nov 2018, so prices may have gone up. Indianapolis area battery repair? | PriusChat

Contact Todd at "TamapPrius.com". That is his member ID and his website address. Maybe he can help you out w/ recommendation or has better labor rates?

Since you didn't buy a CarFax report, run you VIN on Track Your Service Records with Your Toyota Owners Account
Most Toyota dealers report paid service to Toyota. All dealers report warranty work to Toyota. 150K miles for a 2006 seems way too low; someone could have installed a combo meter with a lower mileage.

 

Since she just bought it in February someone probably did a cheap fix on the battery just to sell it.

 

Same boat, same symptoms in my 2005 Prius with 174k miles. Loud vent, stopped accelerating, warning lights, the whole thing.
Mileage seems low for this but it’s 14 years old.

 

If you are comfortable working on cars, you may be able to temporarily repair this yourself.

But it can be a very daunting task.

Otherwise a mechanic will need to repair/replace it for you.

A band aid fix would be replacing one failing module. (If that's the problem)

A proper fix would be replacing the failed battery with a new one.

 

I couldn’t drive it anymore so it was towed to my closest Toyota and I had a new battery installed for $2600 before taxes. It’s back on the road and running great now.

 

No battery lasts forever. Put things into perspective, most people are happy if they get at least ONE solid year out of their smart phone battery. Lucky if they get a second year. After that, many people have to always charge or use the external battery pack.
You got 14 from the Prius battery.

Operating costs for the battery is LOW!
$2600/174k miles = $0.01494/mile
$2600/14years = $185.71/year = $15.48/month = $0.52/day

pricing at 10year longevity: $2600/10years = $260/year = $21.67/month = $0.72/day​

If you are able to DIY, your operating costs would be even lower!

With the NEW OEM HV Battery, you have bought yourself some options should an accident or cost prohibitive repair force early retirement.
1) You can transfer this battery into another Gen2 Prius w/ a failed HV Battery.
2) You can get a Gen3 with a bad HV Battery and transfer the moudules from your Gen2 into the Gen3 Prius HV Battery case.
3) You could transfer the modules into certain Gen4 Prius HV Battery case; this sceanrio unlikely given the Gen4 Prius are young.
4) Sell the battery.

 

I’m going to buy a Prime 2020 and sell my car when I do, likely this year.

 

I am experiencing the same symptoms described in the original post:

I'm thinking an ELM327 can monitor the Battey blocks/modules live right? I'm thinking that should save me the hassle of digging out the HVB case and trying to plot discharge curves using a headlight, a multimeter and a stop watch. And without a charger I'd probably try to recharge with the car some how and really get myself out there lol!

Although I'm going to at least check for corrosion on Block 11 because DTC P3021 is the most consistent code thrown.

 

An elm 327 can do it along with torque pro app.

 

I encountered the same symptoms today. I have a 2007 Prius with 120,000 miles. The red triangle light, evc, check engine and yellow brake light. I also began hearing the whooshing sound from the vent in the back. The car traveled about 3 miles okay but after stopping at a light it would move but wouldn't accelerate. My old code reader flashed a P3000 code. I am not sure what this means. The Hybrid Warning Light appeared on the info screen.

I don't believe I should drive the car to repair shop.

Any additional advice would be helpful.

 

start by cleaning the cooling fan, and making sure the intake grille is clear.

if you are going to diy, get tech stream, or at least torque pro and elm.

it is likely you need a new battery or there is corrosion inside

 

Not that it helps you but you picked the right user name. Va means goes in Spanish so nova actually means No Goes in Spanish. And your car that you own seems to be no going.

It’s kind of a Nova owners inside joke.

 

Thanks the 12v battery was replaced 14 months ago.

 

Yes you have traction battery trouble. Search the site on what to do to fix it.

Many options depending on your repair skill level.