replaced hybrid battery drives great but have red triangle

Do you have a code scanner that will turn off all DTC's?

 

You need a Prius-aware, OBD scanner. There are Prius-specific OID codes.

Bob Wilson

 

Most scanners will not read the Prius specific codes. Emissions related codes are standard by international agreement so generally engine codes are all the same from car to car. There is no such agreement on manufacturers specific codes, transmission, airbags, ABS, traction control, and others.
The best and cheap system is the Mini VCI with Techstream software using an old preferably Vista/ XP laptop. This can read all Prius codes, and sub codes, and is capable of all the service tasks such as zero point calibration, brake bleeding, programming to key fobs, ect.
Costs about $25 plus a laptop. It will work on all Toyota and Lexus cars.

John (Britprius)

 

SJR, have you tried the cave-man method, remove a terminal from the 12v battery for a minute to clear the code...you may lose stored dtc codes, but if the beloved triangle doesn't come back there wasn't a problem to start with....I did take Wilson and Britprius' advice above and got the $25 scanner, too cheap to pass up.

 

There are no magical code readers that can eliminate problem codes that are existing. No matter how many times they are erased, they'll come back if the problem is not fixed/addressed.

 

After I reworked my 2nd Prius' battery I installed it and before I tightened it down with one bolt and then started the car. I figured that I'd like to just make sure everything worked before went to the bother of reinstalling every bolt. As the car started the red triangle come on and I was shocked.

Then I remembered that I'd not not reinserted the safety plug. After shutting of the engine and reinserting the safety plug I restarted the engine. The triangle was still illuminated.... no cods. So, I used my Scangauge II to turn off all

 

Since you had a ScanGauge II, did you try programming it with the XGAUGE data to read the HV and battery ECU trouble codes and inf codes? I'm betting that if you had, you'd have seen at least one of: P3004(inf 131) for the service plug out, P3140(inf 350) for the interlock circuit open.

Generally, if you've got warning lights on, it's because you've got codes. If you make sure you have a code reader capable of reading the codes in a Prius, you'll know more about what's going on than if you don't.

-Chap

 

Nope, I'd already used my Denso Toyota specific Hand Held Scanner to do the diags. I used the Scanguage for fun... and to see what it would do.

 

Close TS, edit the file IT3System.ini as below, then open TS again:

open My Computer, C: Program files\Toyota Diagnostics \Techstream\Env

open IT3System.ini file and scroll down to

AVAILABLE FUNCTION SETTING

Switch TISFunction=1 to TISFunction=0

Click File, and Save.

 

Perhaps you might include some of the error messages and a few screen shots?

Use "print screen" and "paint" to make jpegs.

Bob Wilson

 

Check out this thread over on TundraTalk: Techstream ABCs and 123s: Reference point for all new users and check your install. If you still have problems after this, please post some screenshots as Bob mentioned above.