Replacing brake fluid and bleeding brakes on a GEN II Prius without Techstream

Presumably, you found out the correct torque is 103 Nm, for all wheels not just the rear ones. Hopefully, you didn't stretch any of the threads on the lugs.

Quite possibly. What you could try is to put the disc back on but leave it out from the fully seated position by about 5 mm, adjust the brake shoes so they bind on the drum then put on the lug nuts and tighten down (in a star pattern half a turn at time going around all nuts). You might not need to tighten it all the way home. Just use your judgment. The idea of this is to bend back into position anything that might have got out of whack when you applied force with the M8 bolts.

 

So, you're not using OEM disc/drums and shoes?

Don't do that, start your own thread.

 

I have a 2007 prius, replaced the ICE and ABS unit. I won't get into the ICE here as it has fired up brilliantly. The problem is the ABS (I assume) as there is an alarm that sounds (high pitched) in the cabin upon starting.

I began the procedure of bleeding the brakes, but there is no power from the ABS actuator. The only thing I can imagine is that there is a sensor which disengages the motor if there is no liquid/air in the lines. I am used to the typical clattering from the ABS and there is none, but there is also no pressure to bleed from, and the siren continues until the key is removed. Thanks in advance!

 

What are the trouble codes?

Blink (a/k/a Flash) Codes – How to. | PriusChat

 

I'll post tomorrow. Thank you very much for responding quickly.

 

There are no trouble codes. The high-pitched alarm stays on even when I try to clear codes. The moment I turn the car off it turns off, and goes on again when I start. I am trying to discern the ABS motor sound from the inverter coolant pump and I think it is coming on momentarily but I have no codes at all. I've got a an OBDLinkmx+ with 3 different applications and none are showing codes.

 

When the scan apps you're using won't show you the codes, you can get the codes this way:

Blink (a/k/a Flash) Codes – How to. | PriusChat

 

Hey ChapmanF I started a new thread (perhaps not the right procedure or perhaps so since I hijacked this thread)

2007 swapped ABS, blown ABS-1 and ABS-2 fuses | PriusChat

 

Here I am, making the first post to this thread in 2025.

This is in regard to a 2006 (Gen2) Prius.

In all my research, I have yet to find a definitive answer to the order of bleeding. (as in what is the order of wheels in distance from the master cylinder?) Traditionally (when he master cylinder was on the driver side, and there was no ABS actuator installed anywhere, the passenger rear was the farthest. Then the driver rear, and so on. But in the Prius of course, the location of these items is quite different.

The owner's manual helpfully instructs me to make sure the DOT 3 fluid level is between the lines. And then take it to the dealer if you need anything else. Does the shop manual (or anybody who has used the TechStream procedure) have the definitive answer to the order in which the wheel positions should be bled?

Thank you!

 

Given that the brakes can't be properly bled without using Techstream (or another capable scan tool) and the bleed routine in the tool tells you when to go to which bleeder, it may be that few people have felt a need to make notes on what instructions the tool is going to give anyway.

For gen 3 (I just did one yesterday), I think the order prompted by the tool was rear right, rear left, front left failsafe, front right failsafe, stroke simulator, front left service, front right service. Or something like that—I didn't write it down either. I was busy following the steps as prompted, and the next time I have to do it I'll have to use the tool again and it'll prompt me again.

 

Thank you for taking a stab at it. I remain curious as to what the order is for a Gen 2.

 

It bears emphasis that the most important part of the 'stab' is that you don't get very far just knowing in what order the tool steps you around to the different bleeders, because without the tool also controlling the right valves in the actuator while you do that, your opening bleeders doesn't accomplish the job.

 

For brake fluid replacement, gen 3, without Techstream, the order according to my Repair Manual pdf is to start with the front/right corner, and go around counterclockwise.

Please back-check me though, lol: it's not an easy read, they roughly repeat the instruction for each corner, using either "front" or "rear", and "RH" or "LH". Definitely a case where a picture would be worth close to a 1000 words...

Both with-and-without methods attached.

 

It's interesting that the "when using the Techstream" version of fluid replacement just uses the utility for bleeding (it already exists, and will do the job), while for the "when not using the Techstream" version they give a different order for fluid replacement than the order the tool prompts you through for bleeding. Also noteworthy that you only visit each corner once, whereas in the bleed procedure you visit each front caliper twice, once bleeding the failsafe passages and once bleeding the normal-service passages.

The simplification reflects that the demands of a fluid-replacement job are less stringent than those of bleeding. If there are no bubbles anywhere and you're just letting fluid flow out, the order of visiting the wheels matters little. And only replacing the fluid in the front failsafe pathways might leave a little bit of old fluid in the front service pathways, but, well, who really cares? In contrast, if you were bleeding to remove bubbles, it would not be ok to get the bubbles out of only one set of passages.