Toyota Altis Grande CVT Fluid Change (Transmission code K313)

[rajaatta]

I had sawn many premios and axios with k310 and 313 transmissions with no oil change till 150k kms. And if the normal oil change is carried out they will fail instantly so. For this long interval with no oil change diagnostics starts with the main line belt clamping pressure analysis on idle speeds.
Hook up a techstream get in live data mode get the transmission pressure and oil temperature pid and analyze the pressure on idle after noting it down get in active test menu and initiate the sls pressure valve test. Initiate it on odle and note down the value a healthy transmission has the pressure values upto 2.8Mpa. If the pressure is low than that never do an oil change and go straight for valve body assy service in that you will find a lot of jammed valves along with clutch pack debris so clear out the debris and clearing the jammed valves and reinstall it now remove the front mounted cooler and pour in atlest 7 liters of cvtf in the tranny start the engine and observe the fluid coming out ofnthe cooler you had jst removed keep in poring the cvtf until the fluid is visibly clear and no more black or detoriated fluid is present there stop the engine reinstall the cooler and then level up the transmission fluid remember always level it on 46 c temp exceding the temp and you will under fill the tranny drive the vehicle with very light throttle for minimum 30 kms so the valve body will be filled and all operating valves starts to work after test drive vool down the vehocle and relevel the sump at 46 c after that perform deceleration zero point calibration and cvt fluid pressure calibration reinspect the pressure and tou are good to g again.

[SpeedDemon]

So is there any additive to clean the assembly? Or does that simply loosen the debri to get stuck somewhere else later on?

And does this flushing method also work on 4 speed tranny, or again is it not recommended in my case?

[rajaatta]

Valve body service is carried out ising acetone and carb cleaners plus some flex brushes.

In the harsh engagement or delay in shifts cannot be treated with fluid flushing only.
In normal case for atms if the fluid is so much discolured or burnt then on first hand fluid flush is recommended if simple oil change is carried out there is risk of jerk or harsh engagement scenario to kick in so we alwaus flush the atms with high mileage drain intervals. If harsh engagement has occured then valve body assy service is the only option left.

[bridgedoctorali]

Excellent! Wonderful input. May I request to please write a detailed step-by-step procedure. It will help everyone!

[DUDE007]

This procedure is best done by professionals. It's not a DIY which anyone can attempt at home.

[rajaatta]

I am afraid that some one will not mess up with the transmission vb assy and end up destroying there transmission and blaming us for non professional behavior. But for info purposes we can discuss it i already had explained it on a forum which i created k410 cvt vb assy service. In vitz section. But for k310 and 313 i can provide the details of services which i had done before. Or can make a cvt info video for refference purposes on how to diagnose it if pil is not changed for long durations what do you say Briggs

[rajaatta]

You are right but brother a profesional man can handle that diy project but time would be the key aspect as toyota does not provide any tsbs for there aisin valve body assy so if a professional can do the job in 5 hours a diy project can lasts upto 1 or 2 days

[bridgedoctorali]

I will still urge to detail it. No one should, no one can blame you for a wrong work, it must be at ones own risk and cost.

But please provide complete systematic detail with tools needed.

For the benefit of community the knowledge must be documented. Those who can't do DIY, will at least do informed supervision and high end people will do it in a day or two, they will have to spare time.

Video sharing will be wonderful.

[rajaatta]

Roger brigss you remind me of my uncle who always insits on systematic procedures and detail description writings. Due to lack of time will not be able to write the whole stuff but will try to make a detailed video on topic and will request your expert hands to write the details what do you say boss

[bridgedoctorali]

Most welcome. The biggest issue with me too is time. I am grateful to Autophile Bahi for encouraging me to write otherwise I had no intention to write at least in near future. I am stuck in number of project reports pending.
But I will not say no, sure I will help, however you do some basic write up and later I will jump in.

[rajaatta]

Will try my best atleast some one has again pushed me to do things again. Its been long time so teaming up with elder memebr like you would be a life time fun with alot of life time experince. Good luck and stay blessed brigss over and out.

[bridgedoctorali]

Done
IA

[SpeedDemon]

Appreciate the inputs. I believe an informed customer is the safest one when it comes to getting anything done in this country! The low level of integrity that everyone has fell to is concerning for anyone who earns Halal and values time as well, and getting a decent job done is extremely difficult now.

I have a habit of standing on top of the mechanic's head and still they try and take shortcuts!

Frustration is such an inadequate word to describe the experience...

[bridgedoctorali]

To tell you the experience; you will find such mechanics in USA too; I have to my knowledge such reported cases.

It is best to stand and supervise.

Yes, the more knowledge you the better you are and less fooled!

[ahmedstudio]

I changed the CVT transmission of my Toyota Belta 1.3 2SZ-FE, transmission type CVT-TC. What is the procedure for calibrating CVT?

[fastian04]

Yesterday i was at Garden motors Lahore and i asked an ustad jee.about cvt oil change...he show me a Grande 2014..which had 144k on odo..he said its oil is changed 1st at 40k kms and after that every 25k kms. When i asked about process..he said..it takes 10 mins like engine oil..since i had this thread in my mind..i was about to blast on that ustad..but then i thought..is Toyota cvt durable enough to handle such abuse of wrong cvtf change process till 144k on odo? Car had Sargodha nunber and i guess was probably used roughly..as the paint condition suggested... Dealership nay to draa hi dia.. they had no idea of temperature management at all

[ahmedstudio]

Pathetic ustaad. At dealerships their techies manage temperature in their own method, usually they start the engine and keep it on for a certain time to soon required temperature.

All CVT transmissions are durable add long as their fluid is changed regularly at correct mileage. However CVT transmission system is very sensitive and it can't strive the explorations done by mechanic Ustaads.

[fastian04]

Grande is coming since 2014... don't they get trainings.? A normal person will just take his car and pay them for service lol

[ahmedstudio]

They do get trainings and my experience of dealerships regarding CVT has been good.

[fastian04]

Then..kindly share the best dealership in Lahore so people avoid inexperienced staff