Automatic transmission

[Alfalfa]

Just now, Alfalfa said:

If you only take out the oil in the pan, between 1-2 liters, if you do a full flush, around 7 liters.

 

[ahmed-abrar]

On 9/24/2021 at 5:46 PM, Alfalfa said:

 

thanks

[Pielight]

The important thing of note is that the manufacturers definition of “for life” does not actually mean for a life without a time limitation (and not just car manufacturers - check out Tom Toms “for life” map updates - life expires when Tom Tom stop supporting the product by their book!).

Take sealed for life wheel bearings - you could not have these stood 40 years on a shelf and expect the grease not to fail if installed after that.

Ive no idea what Lexus deem to be the max expected lifetime of the vehicle, but there will be no consideration given to the needs of components beyond what they deem as the limit.

[Alfalfa]

Maybe my car is dead, but the gearbox is much better after full Flushing. I dont care about Lexus opinion in this case.

[royoftherovers]

11 hours ago, Pielight said:

The important thing of note is that the manufacturers definition of “for life” does not actually mean for a life without a time limitation (and not just car manufacturers - check out Tom Toms “for life” map updates - life expires when Tom Tom stop supporting the product by their book!).

Take sealed for life wheel bearings - you could not have these stood 40 years on a shelf and expect the grease not to fail if installed after that.

Ive no idea what Lexus deem to be the max expected lifetime of the vehicle, but there will be no consideration given to the needs of components beyond what they deem as the limit.

The original "Honest John" (Peter Lorimer) always used to state that with regard to  an Automatic Gearbox), the term "Sealed for Life" meant the life of the production run of the model, i.e. usually about 7 years.

[Malc]

and I've also read on here that Lexus deem " life " to be the termination of the total warranty extension period ......... 100k miles is it and whatever age limit too ....  10 years maybe ?

someone will pick me up on these and know the proper limits I'm sure

Malc

[Alfalfa]

I flushed my car at 250000Km, not because something was wrong but i felt it was the right thing to do with the miliage in mind, i got the car back from Flushing and i did’nt find anything to notice in the first place, maybe a little smother but can be placebo, so the snow came and i have a hill with a sharp bend that i have to be careful to not slide out with the rear end, last winter the car startet to rattle in the turn(the only place i make this happen) , same as you force a manual car up hill on to high gear, this winter the gearbox gear down and i am not getting this rattle to start at all.  I am very  sure that the car would have last a long time with the old oil inside, but the gearbox is better with new oil inside.

is It worth it? The cars is much more expensive in Norway than UK and therefor a Flushing cost is easier to deal with in Norway, and maybe a secondhand Lexus buyer in Norway have a little better sallary than a UK buyer.

 

 

[ikaruga24]

Sorry for high jacking into the topic as i have just been "offered" a brand new transmission from Lexus for about 6K pounds (no joke) to fix the following issues resulting to the CHECK VSC light - engine light - TSC off light combo. 

 

Main issue is the C1201 code and under that i have a slew of other codes regarding shift pressure control solenoids C and D. 

These have the below codes:

1. P0761

2. P0781

3. P2714

Before i lose my cool for the idiot that i am that bought the car privately without doing a diagnostic first (based on car history) is there anything to be done in a garage or some transmission workshop to rectify the problem without selling my kidney for it? Any experiences? Advisories? Thank you in advance for anyone's time. 

 

[Malc]

ok, this sounds terrible .......... and Lexus whatever want you to spend a silly £6k 

BUT are the lights on an MOT fail or just that your car is too early to have this worry with the MOT

ALSO do the lights on actually mean that the car is malfunctioning ?

OR is it that there is a simple non-worrying error with a solenoid whatever simply misreading and malfunctioning with absolutely zero harm to the gearbox etc ?

Get a 2nd opinion from a trusted gearbox specialist maybe ?

I say this coz for some years now I have had lots of dash lights flashing on my 56 plate Honda Legend that I'm professionally  assured is simply an error with a solenoid ( is it ) in the gearbox BUT that there is absolutely zero malfunctioning going on otherwise ........  the car and it's gearbox run as smoothly as one would expect from an amazing 3.5ltr Honda V6 with only 140k on the clock ......... it's effectively a malfunctioning light ! 

The cost to have this " light on " fix could be stupidly astronomical ...  like yours maybe 

Best wishes with it all whatever

Malc

[Linas.P]

50 minutes ago, Malc said:

BUT are the lights on an MOT fail or just that your car is too early to have this worry with the MOT

ALSO do the lights on actually mean that the car is malfunctioning ?

OR is it that there is a simple non-worrying error with a solenoid whatever simply misreading and malfunctioning with absolutely zero harm to the gearbox etc ?

Get a 2nd opinion from a trusted gearbox specialist maybe ?

VSC light would be MOT failure now. But perhaps it is too early to worry about it.

The codes means solenoids are functioning outside of specification, in my experience this could mean anything i.e. it could be just an error - no impact to performance, mild or intermittent impact to performance or hard fault where you can't change gears. And it sort of progresses like that at first it starts mild, but it can go from just a light to gearbox replacement in say 10-20k miles.

The "gearbox specialists" seems to be dying breed. People who call themselves "gearbox specialists" either have little knowledge or little inclination to fix gearboxes, the default answer - "fit entire new gearbox for £XXXX".

[Malc]

                         " anyway as it's in limp mode and doesn't go above 3rd gear " 

Sorry my post above is really out of context     .. you didn't mention here about your present state of " limp mode " and the advice you're getting in the other post section about auto gearboxes is very much more relevant.

I had thought that if my Honda Legend gearbox ever became a problem with the lights MOT-wise she could always go as a racing stock car for some little money ....

the car really doesn't owe us much, cost £4k in 2016 and been totally trouble free

Malc

[ikaruga24]

Limp mode is as explained by Lexus a system that works in conjunction with one another. One problem, whatever that may be, affects the whole system and because the car can't know anything specific it puts the car into limp mode for safety purposes. 

Now as i see my car is stuck up to 3rd gear and i have seen it go into 6th a few times so it has problems engaging the 4th and 5th which is where the underperforming or stuck solenoid codes come from to my understanding. 

Now I have ordered a full set of transmission fluid, filter and gasket and i will take it to someone local to do the flushing and check them both solenoids and hopefully this will give the car what it needs to function proper again. 

[SeanR]

Just thought i would add this to this particular thread as its the most recent thread i can find on this particular issue.

I put the question to a guy i know over in Japan, this is what he was told by a firm that puts race cars together and apparently they know their stuff.

Just an opinion and not meant to influence anyone, i see there are different views on this particular topic. Anyways, heres the reply.

 would shy away from changing the auto transmission fluid, unless there is an obvious problem. He says that just changing it can invite unwanted unknowns. Better safe than sorry