722.6 Tranny Reset
 

I was interested today to learn the reset procedure outlined for the 722.6 transmission. As the new owner of the car, is there any necessary reason to do this? Or will the tranny simply learn my driving style over time? And, if so, about how long does that take?

This sounds like a topic for the Tech forum.

Sixto
87 300D

Why wait.

1. Turn the ignition key to the on (not start) position.

2. Press the gas pedal to the floor (depress kick down switch) and hold for five seconds.

3. Turn the key to the "off" position (don't remove the key), then release the gas pedal.

4. Wait at least two minutes for ECU to reset.

Keep drivers door closed the entire time.

What else does this reset?

Sixto
87 300D

On VWs that procedure resets many of the "learned" values in both the engine and transmission computer. I don't think it clears the readiness monitors though. A quick drive re-trains the computer.

that is so cool
 

I'm going to try this, just to see.

As far as I can tell, my shifts are good already

You've been training it all along....when you reset, you will untrain....only to train again.

My car has spent last 15 years being trained by the PO. It must now yield to my will. Mwahahaha.

Shertex is correct. The system is adaptive, meaning it adapts all the time.

There are some instances when you want to reset it, say you have been househunting or something and driving slowly and up hills through neighborhoods, that can disrupt the patterns (I learned that myself when apartment hunting for a friend!). The quick reset gets you back to baseline, and the car behaves normally and then adapts.

Any time there is a driveability issue (bad maf, o2 sensor, etc.) then the transmission adaptations should be reset as it has been adapting based on that bad data.

There is a procedure that will lock the shift behavior where you want it (until it's reset); it's outlined in the W210 forum stickies at BW.

Hope that helps.

well poop
 

its not every day one learns of a new feature.

I was hoping for even better performance:)

Try a fresh start as an experiment.

To my knowledge, the trans only.

I wasn't the first, but was one of the earlier 606.962 owners on the forum. In the early years there wasn't much info available. Whenever I needed anything I was fortunate enough to have MBDOC's ear and blindly accepted his advice as gospel. Served me well.

To this day, if I have a question, the first thing I do is go to advanced search and see what HE said about the subject. 9 times out of 10 he'll have a post on the matter. Guy was something else.