Prius not getting up to speed over 60

Are there any abnormal lights lit on the dash? Check engine or big red triangle?

 

how many miles on her?

 

Let's see.......you have a 15 year old vehicle, with how many miles on it ? (a lot probably).
AND you live at a high altitude.

My first thought is that ANY car that fits that description might exhibit similar performance.
There are just a lot MORE things that can cause it with a hybrid.
Both main power sources are suspect: The gas engine and the hybrid battery.

 

Can you clarify this? Is it on for minutes and then clears by itself? Blinking on and off? It's on today, but off tomorrow?

 

Do you have a way to check for error codes and battery health (techstream or obdii bluetooth adapter with Dr. Prius app)?

If not, Paul at Boulder Hybrids knows more about these things than just about anybody. Have him take a look.

 

A good option is Matt at TexasHybrid. He can program one to match your mileage, send it to you and then you send him your old one back. Very fair prices, and they've been refurbished.

Texas Prius Battery Replacement

 

the fastest way to be done with these issues is to have an expert diagnose them . I don't think Boulder Hybrids would charge a lot for the check up but fixing the problems could be costly depending on what's wrong.

If you want to try to save some money, you will have to learn how to do some checks on your own. An OBDII bluetooth adapter plugs into the vehicles diagnostic port under the dash and connects by bluetooth to your phone. There are several apps that can give you info. The Dr. Prius App will test the health of your hybrid battery which, if it is a "refurbished" one, may be beginning to fail.

If you search for OBDII on Amazon you can find adapters to buy. The Dr. Prius App's web site can give you more info on what the app does and how to choose an adapter: Hybrid battery diagnostic and repair tool for Toyota and Lexus

Techstream is the software that Toyota dealers use to diagnose problems. It can give lot's of info but is more complicated to obtain and use than an OBDII adapter as described above.

 

Then take it to Toyota and pay them to fix it.
Or trade it in.

Easy. But maybe not cheap.

 

I live about 100 miles away but will consider taking my Prius there for major service when/if major work or preventative maintenance is needed.

Either way, let us know what happens.

 

What does the battery SOC show on the MFD during these driving situations ?

Here is a thread on how to fix the combination meter yourself : combination meter repair - DIY | PriusChat