MAHLE RTI ATX-2PS - Manual (Page 15)

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5) Higher levels of fluid in the tanks can bulge the sides.
6) Temperature can affect the volume of the fluid and therefore the level. Temperature does
not affect the weight which is what the ATX-2 is controlling.
The important thing to realize is that the ATX-2 doesn’t need calibration when it takes a level of 16
quarts as seen in the tank to do a 12 quart exchange.
Calibration is not required when:
1) The transmission is under-filled or overfilled (up to 2 quarts) at the end of an exchange
procedure.
2) An exchange amount is selected and the ATX-2 will not proceed, indicating that new fluid
must be added, and the level seen in the slot on the side indicates there is enough fluid. Up
to four more quarts may need to be added.
3) The ATX-2 completes an empty used fluid tank function and there is still an inch or two of
fluid visible in the used fluid tank.
4) The ATX-2 indicates the used fluid tank needs to be emptied and it is not visibly full. The
ATX-2 verifies that there is enough empty space in the used fluid tank prior to starting the
exchange procedure.
5) When emptying the tanks, the process does not end automatically when fluid stops flowing.
It takes a minimum of 30 seconds before the ATX-2 will end the empty tank procedures.
Calibration is required when:
1) The printed circuit board or load cell is replaced.
2) Levels in the tanks are grossly different than what the ATX-2 is indicating.
3) The fluid level in the transmission is grossly over or under the starting level after completing
exchange procedures - on more than one vehicle.
Example: an old, high mileage transmission may overfill due to the extra heavy
contaminated used fluid. If another exchange was done on this same vehicle, the ATX-2 will
probably perform fine.