Prius Synergy Drive Full Tear down 

best engineered mass production cars in the world

Many many thanks to both of you. I landed upon this video completely by chance (was looking for Prius inverter related videos), and I am thrilled that I did. The final bit where you put all the components together, and talked us through how MG1 and MG2 synchronize and drive the wheels either via battery power or via IC engine power was fantastic as well. I have always believed that opening up a machine is the best way to gauge quality, I think I now consider myself better informed about Toyota's hybrid drive systems thanks to this video.

Great video guys. There are a lot of so-called auto enthusiasts out there who have, for some insane reason, convinced themselves that hybrids are impossibly complex, unserviceable, frail, an affront to god, a harbinger of the apocalypse, etc. I wish I could force them all to watch your video, because from a maintenance standpoint, this is no more complicated than a conventional hydraulic automatic transmission - and as you guys mention, the Toyota HSD power-split drive is practically bulletproof. I've been in Camry Hybrid NYC taxis with 400k+ miles on them. They're incredibly durable cars.

this was really interesting, I wondered how they work you guys did a good job, . you hit the hight points now the unit work,I have a general idea of how it all works now thanks

Pretty cool teardown. I definitely appreciate what Toyota has done in terms of hybrid tech more than I ever did before.

Thank you for having such a perfect sound.

Nice u r my best two amazing guys will like to hear from u again thanks to you two from a prius v owner guy

Nice job. Amazed you guys are crawling on the floor. I'd need a chiropractor after that.

Awesome video! The transmission is actually much simpler than I thought it would be.

this video is very useful, I wish you success always and don't get bored to share your knowledge with the world, greetings from automotive from Indonesia

Awesome footage guys, both practical and informative and highly useful to technicians. many thanks

awesome video, the first time reveal of the heart of the Toyota hybrid system

Nice video, the engineering in the Prius is amazing.

the complexity of these hybrid cars makes you really appreciate your car.

Thank you guys for your effort to show how that thing work..

Very informative. Thanks guys. That was brilliant insight. Now I know my prius v a little better.

BTW, with those lineman gloves, you are supposed to wear the accompanying leather gloves over them to protect the insulation. The rubber gloves by themselves can be easily damaged and should not be trusted with high-voltage.

Excellent - Very interesting. Thank you so much.

verry verry informitive. i was under the impression that the motor and electric motor were on a seprate drive thank you verry much for posting this video.

That was Fantastic!! Thank You!!

Very educational, Thanks!

In Japan Toyota Techs work kneeling on the ground too. He must have trained in Japan!

Great work guys, this is really helpful :)

Thank you for recording the teardown :)

The video has had a lot of impact on me thanks

Thanks for the info,and taking the time to share it.

Great job, really interesting to watch.

Great!!!! Loved the humor...very informative..

Thanks for the info: Love you guys

Nice video guys very cool and.......... keep walking,

sangat bermanfaat video ini semoga sukses selalu dan tidak bosan untuk membagi edukasi ilmunya kepada dunia ,salam dari otomotif dari Indonesia

That was awesome! Really informative, well planned, well edited. Simply awesome. Do you have a background in tv/related fields?

Fantastic work!

Thanks buddy Informative

Thanks guys, it was very useful

Great video, thanks

great vid bro! very informative

Thanks for the video, really helpful. My Mk1 Prius has a mechanically-operated park pawl that's not engaging for whatever reason, I'm trying to figure out if it's a massive job to get it out, in case it it broken, or whether it could be the cable isn't pushing it far enough to engage.

Awesome vid I have always been so curious what it looked like in side ...Mine is at 300K and I think it is going to my project tear down ..I think its an inverter issue so might not make to transmission ..thx guys !!

Great job. Thanks

Having fun these guys

That does make allot of sense for less eneregy is loss in inducing magnetic fields via current in the rotor as heat. Thanks!

Great job sir

Great video ! I was left wondering what you did with the actuator to turn it into neutral

very interesting video. thank you!

Love it!

Thanks for the video!

Very educational video

Thank you guys

Great video!! Did you guys end up doing anything with them motors?

Wow the planatery gears are actually quite small. Thanks for the vid

the look on the techs face was classic!

IF you are going to work on cast aluminum on the ground, lay something soft down before placing a mating surface face down. Cast aluminum gouges and scrapes easily and mating surfaces are machined. Please do not do what they did and place it directly on concrete if you run into a corroded bolt and accidently turn the whole thing you could destroy the surface causing premature failure of parts and or leaks.

You guys know they make battery powered impact drivers to speed the cover removal process. Good vid.

I'm just a Prius owner and looking at this device I feel like I own a seriously advanced piece of engineering. This is seriously high technology. To the un initiated it looks like it came from outer space.

Thank You !! Did good job !!!

Marvelous 👌👌👌👌👌

Enjoyed the video...very informative. Where you able to reassemble correctly...lol? It's amazing the degree of reliability Toyota has acheived with these beasts...so much stuff going on in the HSD.

Very informative...Thanks

Good movie Thanks!!

isnt that the guy from the video ''Pretty drunk guy goes for more beer'' ?? Great video by the way :) i finally get to see prius taken appart

alternator on steriods. thanks guys never seen one apart.

I'm amazed how small this transmission is. I wonder how much larger the coils would be on the Volt?

Thank You for this great video! Very nice job explaining the components. I have a question that I hope you either have knowledge of or can obtain. Can you tell me what the Kwh is of MG1 and what is the output current of MG1 when it is in regen mode? I realize that the power MG1 is generating is 3 phase which must be changed to DC to recharge the batteries. Just curious what Volts, Amperage is produced directly by MG1 if in fact it is similar to or greater than a standard alternator prior to being rectified. My guess is that MG1 produces more power output than a standard alternator.

good video guy thank

Thank you

Great Video, Thanks for posting! One question I have about the transmission's operation that I just can't wrap my head around, is - Is there any kind of physical or mechanical brake on the rotation of the MG1 (the smaller one)? That power split device looks very much like an open diff. It seems like there's a lot of opportunity for power to spill out the back of the transmission (thru MG1) when the ICE and the main motor MG2 are turning at full torque, much like when you lift one wheel of an open differential off the ground and that unloaded wheel spins up uncontrollably. How do they stop that?

You must be driving a 2nd gen or earlier. My 2010 is beautiful. I love this car.

Hi Guys, Great Vid! I have a question about how the ATF gets into and all over the internal parts: I did not see any seals to contain the ATF in the gears so I am assuming it goes all over the place in the trans too. So does the ATF get all over the electric parts too? And doesnt that make a bit of a electrical shorting hazard as the ATF gets old/carries metal dust and breaks down? I also suspect that high freq high voltage would have little problem finding an electrical path through the ATF, especially when it is full of metal dust from the gears wearing over time. Any thoughts on this? Thanks.

Thanks a lot!

wow you guys are smart.

goog job!!!!!!!!!!!!!!!!!

yes , it's just good work habit to always do things properly even if it is broken. remember bad habits are easy to form while good habits hard to achieve. yes I'm guilty of typical guy thing too sometimes when I really want something done yesterday.

20:03 hpm magnetic motors also suffer less from heat & generate less heat on start up, and also use much less intitial inductive load which keeps the heat down & lengthens the life of the motor they also weigh much less .

Thanks!, Jason the Tech in the Video let me know they go through extensive training on how to open these, we had the phone book sized manual sitting on the desk next to us. But being that we did not plan to put it together again, and that it was damaged in a wreck, we did the typical 'guy' thing and skipped the manual :)

@TheTrueRandomness Thank you! I do A/V for a living so that may have helped. :) I was not able to get a camera man this time, and with one of the cameras that would only record for 5 Min at a time I had to get creative with editing haha

wow is all i can say alot of work a bit beyond my knowledge but very interesting as im always studying this type of stuff so thanks for a real neat vid the gears i understand the electrics not quite ive taken apart computer harddrives so am fimiliar with very strong mags just those little things can pinch yur fingers ouch but im pretty daring and will take apart most anything

it is maybe like a torque converter when is spins then grabs , I just thought of that because I had one go bad at one time and that is what it does like slipping then grabbing but with a noise ,bang

Nice

Dude with the short hair sounds like a fuckin' genius

@ 15:30 another reason why it doesnt run is because its "poling" without the rear bearing being located and the air gap being small, the rotor is being pulled by the magnetic field over to the stator

cool. do you have a by idea what changed between this and threw newest one in the 2016/17?

Top stuff

Great Job!!! Doug and Jason, I love the Prius and i want to buy a used one (2004-2009 model), how can i avoid buying a Prius with transmission or Hybrid system trouble from either owner/dealer? I live in the hot and dry climate of Phoenix AZ.

if the electric motor burns for any reason does the engine runs to get you from point A to point B?

Also the orange wires are strict when u hook them up or what is the order if I just want to make sure they are correct. I replaced the battery and tried another inverter but so far engine wouldn't turn at at. I hear a click but never turn the engine. Even when the car in ready mood. Thanks for the help. Love the video

Is there a way to seperate/remove the transmission from the output of mg1 and 2? As in... would it be possible to take an out put from the motors and hack off the housing section of the transmission to possibly weld on an adapter plate... ?

thank you very much for this video, y'm french car mechanic and i will dead less 'slang' ! thanks to you.

Thanks

I have a 2004 civic hybrid qirh 184000 miles never been wreaked and when I start to take off from a stop I feel like a bang like a jump into gear type noise , it does it all the time when starting from a complete stop sometimes it is an easy noise or a harder bang like jumping into gear , like a trans slip , can you give me a idea of what this may be ,

Hello my Toyota Prius 2007 My car has walked 33,000,0 km Can I exchange gear oil or will it cause problems and is there a filter inside the gear that needs to be changed Thank you

awesome video! ya'll seem to know a lot about the hybrids, would you happen to know where the atf fill plug is on 2013/2012 camry hybrid, and how much of it the car lost when the passenger side axel was pulled out?

Djdaudio what do you think caused the windings to burn? Is the rotor and stators immerse cooled in transmission fluid too?

Good catch!, but with the alternator I was running about 20V AC max much safer then the 300VAC found in the Prius. so no need for the gloves here.

i have a 2004 Prius i recently changed the mechanical pump on it , now the car will not start i thought it might have been the 12 volt batter but no joy , ugh i need some advise

good

This is like alien technology.

People are people. Too true.

would it help to run couple ounces high quality additive like archoil to the fluid?

My prius gen 3 stopped me on the road. It give P0335. Crankshaft Position Sensor. Sensor changed, wiring harness ok, Ecu changed still the car refused to start. I thinking the mg1 has gone bad. Before the car stopped me, it was rattling and making knocking sound on at slow moving speed when the HV battery is charging only. If the Mg1 stop charging the HV battery the rattling noise stops. Could it be my transaxle that is my problem. I thinking of buy new engine and transaxle?