[cjarabia]

Just spoke to the dealer/repair guy again - So I just want to put an end to this "user error" theory. I've had my Prius for 5 years and it has never had a problem until now. I know how to start my car so it's not a user error. Also the guys at the Toyota dealership where I purchased the car were able to replicate/duplicate the problem and I assure you, they know how to start a Prius - so this is not a user error - also they told me that Toyota has told them that this problem is happening and attributing it to the "combo meter" but now that mine has been replaced, I think we can safely say it's not the combo meter.

I spoke to my repair guy and told him that I saw this thread as well and he's going to check to see if there's something in the brake, that is maybe not telling the car that my foot is on the brake and that it's okay to go into drive mode OR possibly something in the shifter isn't working properly and needs attention. We will continue to problem solve, but it ain't the combo meter.

 

[cjarabia]

Sorry, in my first post I called it a "regulator" but I meant to say "combo meter" just to be clear.

 

[firepa63]

All the dashboard lights come on and I can only shift into neutral. I took my car to the dealer, they were able to replicate the problem, and they replaced something, a "regulator" but the problem is still happening and still not fixed. I'm wondering if they bothered to Google it to even see what the problem is, because I'm clearly not the only one having this issue. They don't seem to know why the problem is happening either. It took them 2 weeks to get the part in (Regulator) and I was already without a car for those 2 weeks and it's frustrating that the problem is still not fixed. Would love to know if you solve this problem or find the source of it or a resolution so I can tell the Prius experts at Toyota how to fix it.

If you could only "shift into neutral" how did you get the car to the dealer? Did you have it towed? Or, is your problem intermittent? There were some shifter problems with the Gen II Prius, but it usually appeared as the shifter sticking in one location.

 

[Penguin]

Hmmm you see, with technology going on even cars start behaving like computers... When something doesn't work keep pressing the power button and it will turn off then reboot ahhaha

 

[pazer22]

Cjarabia, did you ever find the root cause of your problem? Was it the brake not sending the proper signal? Other forums are suggesting a faulty 12v battery but curious what you found. I have the exact same issue.

 

[Ihicaro]

I had this problem, and no amount of cajoling would get it started.
The Toyota dealership diagnosed it as 'clogged up throttle body'.
They cleaned it out, and the car worked smoothly.

 

[Ihicaro]

I had this problem.
The Toyota dealership diagnosed it as "clogged up throttle body".
They cleaned it out, and the car works smoothly.

 

[PensacolaPrius]

Oil Overfill

I had this problem.
The Toyota dealership diagnosed it as "clogged up throttle body".
They cleaned it out, and the car works smoothly.

I'm dealing with a similar situation, my '06 with 185k miles is at the dealership right now. I'm pretty confident that it is oil in the throttle body caused by a Walmart oil change overfill.

 

[Phoenix]

Hope the fix is something easy and inexpensive.

We had a couple of instances where the engine oil was overfilled ... by the Toyota dealer's service department.

Now, after periodic maintenance, I check the ICE oil level in the dealer's parking lot BEFORE I drive it off the lot. To this day, I still have to have them drain a half-quart of engine oil about every third time they do an oil change.

 

[Josian]

I'm dealing with a similar situation, my '06 with 185k miles is at the dealership right now. I'm pretty confident that it is oil in the throttle body caused by a Walmart oil change overfill.

I have exactly the same problem so Do you mean the prius is acting like this because the gasoline motor is not starting and can be the clogged up throttle body or something else ?

 

[Phoenix]

The hybrid computer controls switching between the ICE and electric motor. When the computer issues a start command to the ICE, the engine has a little less than a second to start running; otherwise, a "failed to start" error is sent. If the computer senses that the ICE did not start, it spits out fail codes and will not attempt to start the ICE again until the problem is fixed, and the fail codes are cleared.

If the engine oil pan is overfilled (full = 3.7 quarts) it will sometimes suck oil into the intake manifold, causing the ICE to stumble when started, which results in a "failed to start" error. While this can occur in any temperature, the probability of this happening increases in extreme cold (sub-freezing) weather.

Sometimes, you can just clear the error codes, and the ICE will start successfully the next time you power up. However, if enough oil has entered the intake manifold, it may have to be disassembled and thoroughly cleaned before the ICE will start reliably within the time allowed.

Besides excess oil in the intake, the butterfly valve can also get contaminated with carbon build-up, which will also require the intake manifold to be removed and thoroughly cleaned.

Repair shops, quick-change oil centers and even Toyota dealer service departments often use automatic filling equipment to pump in new engine oil while doing an oil change, and it's easy to just set the indicator to "4", instead of "3.5", which will result in the crankcase being overfilled. Then, it's just a matter of luck whether you will have problems down the road. (To avoid this, take in your own oil for them to add; specifically, 3.5 quarts only! Or, do the oil changes yourself.)

If you have error codes indicating "failed to start", the default troubleshooting method is to check the engine oil level to make sure the crankcase is not overfilled. If it is overfilled, drain a little oil out until the level is at or below the full mark on the dipstick. Disconnect the battery for about 20-30 seconds; then reconnect, to clear fail codes. Then, attempt to restart your car. If you're lucky, this will fix the problem. If this doesn't work after a couple of fail-code resets, you will probably have to remove and thoroughly clean the innards of the intake manifold; or, limp/tow your Prius to the dealer's service department for repairs.

Good luck!

 

[Donaldchriss]

Well a fast way to get out of it seems, to be to quit the car and use the fob to secure and open up the gates. When you get returning in everything is sensitive again.

 

[Ralph A D]

Mine (7 months old) did it again yesterday. In fact, it's completely reproducable and it does it every time.

When I get in, put my foot on the brake, push the power button, everything comes on as advertised. Then if I take my foot off the brake, play with the navigation or my iPod for a couple of minutes and then try to shift the car into reverse or drive, it won't go.

even though it said ready when I pushed start, since I didn't go within some alloted amount of time, it goes back to sleep. The nav system is still on, the radio still works, whatever, it just isn't "ready" any more. The way around it is to push the power button to turn it off, put my foot on the bakes, and pust the power button again. Then it says ready again, then I go.

Like I say, whenever I don't go within about 4 minutes, it does this. I assumed it was a "feature".

Don't think it is a feature I am having the same problem with my 06 Prius . I have a notification on the display that says ( There is a problem with the transmission P locking mechanism) The Triangle is on and the cars engine won't start , and I can't put it in park , car wont move

 

[Ralph A D]

I am having a problem with my 06 Prius . I have a notification on the display that says ( There is a problem with the transmission P locking mechanism) The Triangle is on and the cars engine won't start , and I can't put it in park , car wont move

 

[Ralph A D]

Sorry, in my first post I called it a "regulator" but I meant to say "combo meter" just to be clear.

Please let me know what you find out . I have changed the shift-er on the dash and that did not work , Held down the start button for 5 sec and that did not reset it either. I am going to try cleaning the intake manifolded to see if that will help . I did have a blown head gasket so maybe oil get in the intake some how . Please if anyone figures this out I would ready like to know