XC70: Gearbox Auto Transmission Fluid Change

[tt82]

I followed the procedure as listed by Martin. Started the car up and went through every position in the box, holding it for at least 2 seconds. I then removed the level plug and a small amount of fluid dropped out. I have to say that that fluid did feel luke warm. I had my phone on the Torque app to measure the temp but as the transmission temp rises along with the coolant temp, I wasn't to trusting of it. I let it run for a couple of minutes and no further fluid dropped out. So I replaced the level plug and switched the engine off.

[nickbw898]

Mine has had stop neutral on it up to 138000 miles. I just had it removed and the adaptions driven. I reset the fluid counter and service interval parameters before it went to Squire Automotive Ltd in Burntwood Staffs. I have done four flushes using at least 15 litres JWS 3309 each time and reset the fluid counter. I also fitted an auxilary cooler in front of the condenser. My gearbox serial number is within the quoted series that can develop B4 servo problems but I have left well alone as the box changes barely perceptibly since I did the fluid change. You cannot successfully judge the fluid temp of the g/b using coolant temp. I have Torque Pro and Vida/Dice and have proved it.
The filled for life is bull****. These are in loads of different marques and all give trouble if the fluid is not changed. Those who want to keep their Volvos long term change it every 30 - 60K miles.

[tt82]

Yes, I fully understand the Torque was never going to be the ideal option for measuring the ATF temperature, but it may have been able to at least help identify when the ATF is between 50 and 60 degrees C, rather than just guess work.

As it is, I repeated the process on Friday after taking the car for a drive to help mix the ATF. When I came to do the leveling procedure and removed the sump plug, a good amount of fluid dropped out before I realised something was not right and put the plug back in. The temperature must have hit 60C and opened a valve as nearly 2L of extra ATF came out. I would strongly advise that any owner performing this task lets the car completely cool down before you start the leveling procedure, otherwise the residual heat soak from the engine and gearbox means you will reach 60C very quickly. As it was late Friday afternoon/evening when I was doing this, I left it overnight and did the leveling on Saturday morning.

Also the part number for the crush washer on the Level Indicator Pipe is 30713220. The initial washer given to me by my dealer was wrong and they had to search for this number through a repair procedure.

[DSB Cheshire]

I know this is an oldish thread...but on the 6speed geartronic don't you need to reset the oil counter after ATF change? then reset adaptation?
I am pretty sure this is recommended on the 5speed but not sure about the 6....

[Cantankerous One]

Originally Posted by DSB Cheshire

I know this is an oldish thread...but on the 6speed geartronic don't you need to reset the oil counter after ATF change? then reset adaptation?
I am pretty sure this is recommended on the 5speed but not sure about the 6....

VIDA states it should be done with the 6 speed too

[tt82]

Never did it, not had any issues!

[DSB Cheshire]

okay thanks, I thought so...the process defined on the forum by forum members (6sp) does not show this yet they don't seem to have any issues post ATF change?

Originally Posted by Cantankerous One

VIDA states it should be done with the 6 speed too

[Cantankerous One]

This information from VIDA may help understand why the fluid change counter needs resetting when changing the AT fluid. It also explains about resetting the adaptation.

Resetting the adaptation and the counter for "Transmission oil, replace"

The transmission has torque-regulated, adaptive pressure regulation. The pressure regulator enables the transmission to regulate pressure during each shift to prevent hard shifting. Each shift is assessed by the transmission control module (TCM) and is stored in the internal memory. This makes it possible to compensate for transmission and clutch wear. It is important that the adaptation in the memory is reset so that the transmission works normally after the repair. Because the fluid was changed during the repair, the counter for transmission fluid change must also be reset. If the counter is not reset during draining/replacement, a diagnostic trouble code may be generated under the wrong conditions.
Note! This applies only if the transmission or one of the components in the transmission have been replaced.

Resetting the “Transmission fluid change” counter
The transmission control module (TCM) has a counter for fluid quality that counts the number of times the transmission is subjected to too hard a load or too high an ambient temperature. If the counter is not reset during draining/replacement, there is a risk that a diagnostic trouble code will be set under the wrong conditions. Thus, it is important that the counter for transmission fluid change be reset.
Note! This only applies when the transmission oil is changed and when the oil is changed during repairs to the transmission's temperature sensor.

[pierremcalpine]

Originally Posted by tt82

Yes, I fully understand the Torque was never going to be the ideal option for measuring the ATF temperature, but it may have been able to at least help identify when the ATF is between 50 and 60 degrees C, rather than just guess work.

.

What IS the best way to measure ATF temperature? Can VIDA/DICE do it?

[Cantankerous One]

Yes VIDA/DICE can show the ATF temperature.