Toyota Altis Grande CVT Fluid Change (Transmission code K313)

[bridgedoctorali]

Forgot to answer to your question regarding TechStream; this is question is in advance:

As far as my car, I did not do any CVT calibration as it was not needed (due to fluid change only).
However, I did the CVT calibration of my cousin's Grande, whose CVT Fluid pan was opened (23-Jan-2019). We used TechStream.

I did calibration of CVT of another Toyota Vitz 2005 whose CVT was replaced.

Both calibrations were done via TechStream and I will elaborate the procedure (by the way using TechStream might require starting another thread).

[DUDE007]

I see. It's to my understanding that calibration has to be done with every fluid change otherwise cars like vitz suffer from vibrations. Xulfiqar bro can comment on this.

I have toyed around with Techstream so yeah it is a bit complicated first but ab haath set hogya lol.

[nawan885]

Excellent job done. Well done

[hash4u]

awesome
highly doubt any workshop can go to such details over here. time is money & labor is no longer cheap in Pk

[corps]

Excellent use of measuring equipment. Very important if getting the levelling perfect is an issue. Prevents overfills and gives you a statistic to maintain. Great write-up! Oil analysis (UOA) of the fluid extracted can give some overall insights which will really help out this thread (Idea?).

[makhdoom123]

Great article Dr sab
I believe you have payed a lot of attention to even the smallest of the details.

I admire your passion 🏻

[rajaatta]

job perfectly done good diy project

[ahad5]

What an awesome write up like enjoyed reading it.

[Xulfiqar]

you do need to calibrate the system pressure when you drain and fill some CVT oil, if you dont, you may face odd driving behaviour, like low speed mild shudder etc. And quick wear too

[rajaatta]

Cvt fluid pressure calibration and g sensor zero point are the only two option to tell the ecu that some thing has been done on transmission if not done after oil change then belt calmping pressure surely drops with the handsome amount of 200 + psi worth of pressure. Results in fast forward drum detoriation and clamping belt slippige. Jurddring jumps in when things gone to holidays for enjoyment. I always love that point of Toyota CVTs

[bridgedoctorali]

Used CVT Fluid analysis would indeed be very, very useful; but the issue is cost! The oils/fluid tests are generally very expensive here. I once did tested oil of a friends car (free of cost due to a friends), but I guess it costs around Rs15,000 to Rs20,000 for engine oil analysis.
Anyways, I wish I could do the analysis and compare it with fresh CVT fluid.

[Xulfiqar]

Yes, the wear then happens by square multiplier.

Its not like 1-2-3-4-5

Its more like 1-2-4-16-32.

If u think this is cool, open up a jatco cvt, it commits devdas wala suicide for no reason.

[rajaatta]

Yes and thats when peaople think it was fine a moment ago and now .........

[Xulfiqar]

Its quite hard for the avg user to understand,

And also to make them believe that toyota cvt oil is not long life is like telling them cheeni namkeen hoti hai

[haseeb.basharat]

Toyota pakistan recommended 55k or 2 years for cvt oil. If someone has driven only 30k kms in 2 year than should he change cvt oil or not?
Their stealerships don't know how to change cvt oil.
They open pan, and pour in 3.8L oil. They never check oil level by dripping method.

[DUDE007]

Sir, does the same procedure apply for the new honda civics with CVT transmission (couldn't find any transmission code)? I guess HDS will be needed to calibrate the CVT pressure.

[Xulfiqar]

Honda require starting clutch calibration - If a Honda CVT loses belt clamp pressure, its life is measured in hours then.

[corps]

@bridgedoctorali That's $$$. Probably because there ain't a huge market for it.

[bridgedoctorali]

It is for those user who want to avoid wrong procedures and want to do the fluid change appropriately.

[corps]

@bridgedoctorali I was talking about the UOA. I see too many Gen-3 Prius(es?) getting the wrong CVT-TC fluid filled at dealerships (Yes, you read that correctly). We need a thread like this for them.