Operation CHARM: Car repair manuals for everyone.

Checking Oil Quality






Checking the oil quality

Checking the oil quality




- Ignition off.
Check the oil. Take a sample with the dipstick.
Alternatives:
1. The oil is OK
2. The oil is discolored or has a burnt smell
3. The oil is contaminated with water (grayish coloring).





Select a suitable alternative.

1 - No Fault Found

2 - Changing the oil

3 - Replacing the component

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Changing the oil
Replace the oil according to Oil, changing, AW55-50/51SN Changing Oil.

Continue - Resetting the oil quality counter

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Resetting the oil quality counter





Resetting the adaptation

Resetting adaptation and the counter for "Transmission oil change"

Hint: The transmission has torque controlled adaptive pressure control. Pressure control means that the transmission regulates the pressure itself during each gear shift. This avoids harsh gear shifting. Each gear shift is evaluated by the control module and stored in the memory. This allows for compensation for wear and tear in the transmission and clutch. It is important that the adaptation in the memory is reset after the transmission has been repaired. This is to ensure normal operation. The oil is replaced during repair; the "Transmission oil change" counter must be reset. If the counter is not reset when the fluid is drained and replaced, there is a risk that a diagnostic trouble code (DTC) will be stored in incorrect circumstances.

Note! This applies only if the transmission or one of the solenoids in the transmission have been replaced.




- Ignition on.
Click on the VCT2000 symbol to reset the adaptation and counter.





Continue - DONE

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DONE - FAULT FOUND

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Replacing the component
Find out the reason and remedy the cause of water in the oil.
Replace the transmission.
Flush the oil cooler, pipes and hoses according to Replacing the transmission, AW55-50/51SN Replacing The Transmission.

Other information:
- For information about replacing the transmission, see Replacing the transmission, AW55-50/51SN Replacing The Transmission.





Continue - Resetting the adaptation and oil quality counter

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Resetting the adaptation and oil quality counter
Resetting the adaptation
DONE - FAULT FOUND

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