P button

Hmm, I would say it's time to check the condition of the 12V auxiliary battery. Might turn out to be something else, but check that first.

 

From the 2010 Owner's manual:

 

wow, so nothing if it's just a flashing p. i guess the 12 volt like azwxguy said.

 

A 2 amp charge of the 12v for 12+ hours then a disconnect of the 12v from the system and reconnect would top it off and reset the system, if it still blinked "P" I'd get it to the dealer.

 

That instruction from the Owners Manual is clear as mud.

 

ya, so if p flashes with no message, no problem?

 

It says that a "problem" is not a "malfunction." But then you still have a "problem", so go see your friendly neighborhood Toyota dealer, who will run some diagnostics and charge you $$$$ to do so and then tell you they couldn't find a "problem." Problem solved!

Like you said - clear as mud...

 

Is the OP ever going to come back?

 

I can hear the Jeopardy music softly playing somewhere ...