Car problems

Asked by May 12, 2017 at 02:21 PM about the 2007 Toyota Prius Touring

Question type: Maintenance & Repair

I bought a 2007 Prius Touring anout a month ago
or so. It has 66,000 miles. It has a salvage title, it
got hit from the back at 59k miles. A dealership
bought it a fixed it and sold it to me after putting
5000 miles on it. It ran perfectly except for light
saying low air in tires after putting in air. I took it on
its first trip, 700 miles from home and while here
the transmission started slipping and then the fan
started blowing constantly annoyingly loud. I had
never heard it .before! I had loaded the back seat
up and dont think vent was blocked but am not
positive! Didn't  stop when stuff was removed! It
also rained alot and it was leaking in the back
hatch door. Water was around the spare tire. Then
the red triangle, yellow brake system light, vcs,
engine lightcame on. My husband changed oil and
transmission fluid. Transmission stopped slipping!
Is driving fine except for fan still blowing! Warning
lights still there. Auto zone diagnosed said hybrid
battery bad! Went to advanced auto parts they
gave me the codes and meanings. C1259hv
system regenerative malfunction current, c1310,  
c1378, p0a80 replace hybrid battery pack,
P3018,battery 8 becomes weak. Since the fan was
running hard we cleaned fan and filters. Didn't help!
checked cooling pump for turbulance and heard it
was running, just to rule that out. My husband took
out hybrid battery and tested each cell they all
showed 7.8 and 7.9. He cleaned the corrosion off
the connections and put it back together.left 12 v.
battery  off 30 min. or more to erase codes.
Started car and all the same lights plus ....abs,  
slippery tires and tires need air blinking! Car won't  
get ready now! Wont drive no more! I haven't  had
any trouble with the 12 volt battery being weak. My
husband checked it and it said 12. something.
Help!

3 Answers

120,465

Did you get a warranty with this car?

245

The reason you hear the fan blowing in the back is because whenever there is a problem with the hybrid system the computer is programmed to keep the battery fan at high speed to keep the hybrid battery cool. Since you have water in the back you could be experiencing a high voltage isolation fault, which will prevent the vehicle from going in to ready mode. If that is the case please tell your husband to be very careful when working on the car. The cells in the battery will all be at proper voltage because there is no load on the battery. Buying a previously salvaged car is a great way to save money, but you have to be sure the work was done right by a reputable shop. At this point I would suggest that you take the car to a technician that has a Techstream Computer system (Toyota diagnostics software), and have the problem properly diagnosed. Then you need to have the body shop that worked on the car repair the seals on the hatch, so that water doesn't get in. I hope this helps. You can contact me with any more questions.

1 people found this helpful.

My husband found out he didn't have the electric plug plugged in right and now it drives again! It took 5 or 6 blocks for the warning beep, warning lights and fan to come back on. First there was a screeching noise up front.

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