[GeorgiaHybrid]

rhcev6 said:

Does anyone know which scan tool can do advanced functions like this as well as reading codes like HV battery temp and voltages? I am at 120K now and just heard about this so I am probably overdue and need to get this done ASAP. At this point I am wondering what else I am behind on.

The ones I am familiar with are Snap-on (Solus Pro/Ultra, Modis, Verus, Verdit) or the factory scan tool. There may be others (Genesis?) but they generally run $3,000 and up for the capability these scanners have. That is why I said you need a buddy with one....

If you have a good tech for a friend or your local mechanic is friendly, he might do it for you at a good discount.

[rhcev6]

I just bought the AutoEnginuity. I am hoping this will allow me to do this work myself for just the cost of coolant. The scanner should arrive next Tues with SW Ver 10 so we will see if it can do it.

[rhcev6]

GeorgiaHybrid said:

It also helps if you have a buddy with a bi-directional scan tool that can run the inverter pump in test mode to help bleed the system. I will be doing mine with a "how to" written up on here in another 6,000 miles or so (at 94,000 now) but it does not take that long to do. If you have access to something like a Snap-on Modis, Verus or Solus or a factory scan tool, the following will get it done quickly

1) Remove the inverter reserve tank cap
2) Go under the car and using a 10mm hex, remove the inverter coolant drain plug.
3) IMPORTANT !!! Measure the amount you drain out. You need to put at least that much back in (or a little more).
4) Install the drain plug and torque to 29 ft/lbs.
5) Fill the reserve tank.
6) Hook up the scan tool of choice, go to your system test area and do an active test of the inverter water pump.
7) Keep adding coolant to the reserve tank as the pump pulls it thru the system to bleed the air out.
8) Keep the coolant level between full and low while the test is running.
9) When the system will not take any more coolant and you have added at least as much as you drained out, the system has finished bleeding the air out of the inverter lines.
10) stop the inverter pump test
11) Replace the inverter reserve tank cap.
12) Go buy yourself a nice 6 pack of your choice, sit back and savor how you just saved $300.

Edit: The system will hold just over 3 quarts of coolant and the same coolant work for the engine and the inverter.

GeorgiaHybrid,

You said the same cooland works for both engine and inverter. Is that the same for a 2003 Prius as well? The dealer said that was called the super life coolant.

I am going to try doing this once I get my AutoEngunity scan tool but befi\ore I drain anything I will try running the inverter pump test to make sure that works.

Do you happen to have the procedure for the Brake bleed by any chance as well?

Thx!

[GeorgiaHybrid]

I have a brake bleed procedure for the Camry's but I'm not sure if they are the same as the Prius. The coolant should be the pink long life for the newer Toyota cars but I'm certain the older red long life can be replaced by the new pink coolant.

[jdenenberg]

rhcev6 said:

GeorgiaHybrid,

You said the same coolant works for both engine and inverter. Is that the same for a 2003 Prius as well? The dealer said that was called the super life coolant.

I am going to try doing this once I get my AutoEngunity scan tool but befiore I drain anything I will try running the inverter pump test to make sure that works.

Do you happen to have the procedure for the Brake bleed by any chance as well?

Thx!

Steve,

The 2001-2003 Prii used the earlier "Long Life Coolant" which comes in concentrated form (dilute 50% with Distilled water). It needs to be refreshed every 30k miles. The SLL Coolant is rated to last 50k miles (100k for the first refresh) and comes pre-diluted.

JeffD

[rhcev6]

Are the two interchangeable? If they are the same specs I would rather get the super long life I would think, right?

jdenenberg said:

Steve,

The 2001-2003 Prii used the earlier "Long Life Coolant" which comes in concentrated form (dilute 50% with Distilled water). It needs to be refreshed every 30k miles. The SLL Coolant is rated to last 50k miles (100k for the first refresh) and comes pre-diluted.

JeffD