Is there a automatic transmission fluid level sensor?
10-03-2007, 06:40 PM
#12
AudiWorld Super User
No, that's way too high.
It is actually stamped on the tranny pan (at least on my car). The UPPER limit is just over 100 degrees.
From having done it, the trick is to first fill it cold. Then start it, which sucks a bunch of fluid into the circulating system. Then pump more in until it runs out the fill port, finally closing it as it crosses the specified operating temperature. Frankly warm but not hot to the touch is the poor man's way to do it--not significantly different than the exact VAG COM reading.
The two mistakes people probably make are failing to do that second fill when it is running but cold, or later opening the fill port when the car is off. Either one will leave the fluid quite a bit low--its well over a quart/liter difference in my experience.
From having done it, the trick is to first fill it cold. Then start it, which sucks a bunch of fluid into the circulating system. Then pump more in until it runs out the fill port, finally closing it as it crosses the specified operating temperature. Frankly warm but not hot to the touch is the poor man's way to do it--not significantly different than the exact VAG COM reading.
The two mistakes people probably make are failing to do that second fill when it is running but cold, or later opening the fill port when the car is off. Either one will leave the fluid quite a bit low--its well over a quart/liter difference in my experience.
10-03-2007, 06:45 PM
#13
AudiWorld Super User
See my post further below.
Yes, it has to be running and you shift it through the gears at idle (holding the brakes of course). At home it is harder to do and have the car level. I do it by putting the front on ramps and jacking up the rear at the same time until my bubble level I had placed on the roof when it was on the ground returns back to level. As I recall, you check in Drive finally. But as I mentioned below, the big change in level really is just having the car running, which drops it a lot. Later, the temperature increase starts to expand the overall fluid volume.
10-04-2007, 09:38 AM
#15
I think everyone sounds clueless. 4driver4 has the right idea. do this!!
all these generalities wont fix anything. With vehicle cold remove fill plug and fill with trans fluid until it runs out. Now start vehicle and leave in park. watch trans temp in value block 4 of tcm, between 30-45'c fill trans again until fluid runs out. install plug and your done. or keep asking people who dont know
10-13-2007, 12:08 PM
#19
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It was a combination of a faulty brake switch and low ATF fluid
after 3 months of dancing around the idea, the rebuild shop finally had the dealer check the ATF fluid level and found it to be low. They also found that the brake switch was giving a "implausible signal" which apparently meant that the computer didn't know when the brakes were on so that it could adjust the release point for the locking tc. Anyhow, it drives perfectly now. The parts were under warranty and it had already been there twice previously for the same problem so they didn't charge me for the fluid service or anything.
I just hope there is no permanent damage from running it low of fluid for so long.
I just hope there is no permanent damage from running it low of fluid for so long.
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