My Old 2002 Prius Problems had:

(1) unexpected energey check, red triangular sign on the multi-display when starting the car. Last June: service dept told me they couldn't find any problem. This year: 5/04 it did the same thing. They finally found the problem. The problem was: ECU and fuel relay.If I didn't have any extended warranty, I would have apid $2000 for the repair.

(2) dead auxillary (starting) 12 battery (NOT Hybrid Battery): it had a dead cell. The service told me I was only having this problem. Cause: Unknown. It was covered under warranty.

(3) Making Squeaking Noise when the car made turns. Tire: Thread not worn. It had 27,000 miles when I traded in.

(4) Locked itself when the keyless remote outside of the car. The service told me it won't arm itself. It was still unsolved when I traded in.

Note:
Toyota sent me Technical Bulletin for resealing battery pack (Special Service Campaign SSC-40 G for 2001-MID 2003 models). All service was done by Toyota Dealer.

Don't get me wrong. 02' Prius was a good car.It had GPS Navigation, side impact Airbags, AM/FM 6 Disc Changer and Cruise Control. I had so many problems because I may have bought their demonstrator on the lot.By the way, I bought extended warranty in case my car may have problem. In my opinon, 02 Prius wasn't driven as good as 06. It drove like electric gold car. It lost speed when climbing up the slope.
AC was blowing warm air ( normal for 0ld Prius) when idiling.


Note:

I didn't pick up my car. The car was waiting for the parts when I traded for my new 06' Prius.