Automatic Transmission Fluid (ATF), Draining For Automatic Transmission Fluid Flush

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Special tools and workshop equipment required

T-Handle Hook 3438
Used Oil Collection and Extraction Unit SMN372500
Protective eyewear

Procedure

CAUTION:

Danger of causing damage to the transmission.

Do not start the engine if there is only a little or no Automatic Transmission Fluid (ATF) in the transmission.

The engine is off.
Move the vehicle onto a 4-column workshop hoist or over a work pit so it is completely level.
The selector level is in "P".
The electro-mechanical parking brake is set.
Depending on the version, Automatic Transmission Fluid (ATF) inspection plugs of different lengths -A- are installed. The ATF check plug must be replaced after the ATF level test. Always pay attention to the allocation according to the transmission codes . To prevent damaging the transmission, compare the old and new ATF inspection plug.

Fig 1: ATF Inspection Plug
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-- Remove the rear noise insulation. Refer to NOISE INSULATION .

Fig 2: Locating Rear Noise Insulation Bolts

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-- Place the Used Oil Collection and Extraction Unit SMN372500 under the transmission.

WARNING:

Danger of eye injury.

Wear protective eyewear.

-- Remove the ATF check plug -A-.

Fig 3: ATF Inspection Plug

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-- Drain the ATF.

NOTE:

Follow all disposal regulations!

Depending on the version, different ATF inspection plugs and different oil level tubes are installed. Always pay attention to the allocation according to the transmission codes .

Transmission with a Long Bent Oil Level Tube:

Fig 4: Removing Long Bent Oil Level Tube

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-- Pull the oil level tube -A- out of the ATF check hole using the T-Handle Hook 3438 and let the remaining Automatic Transmission Fluid (ATF) drain out.

-- Push the ATF level tube -A- into the ATF check hole -B- by hand.

Fig 5: Inserting ATF Level Tube -A- Into ATF Check Hole -B-

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Installed position: The large tab -1- on the oil level tube must face the recess -2- on the ATF inspection opening.

NOTE:

The ATF level tube -A- must be replaced after the second attempt.

Transmission with a Short, Straight ATF Level Tube:

Fig 6: Removing Straight ATF Level Tube

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-- Pull the oil level tube -A- out of the ATF check hole using the T-Handle Hook 3438 and let the remaining ATF drain out.

The o-ring -1- must fit correctly inside the groove in the oil level tube (See Fig 7).
-- Push the ATF level tube -A- carefully and straight into the ATF check hole -B- by hand.

Fig 7: Inserting Short ATF Level Tube -A- Into ATF Check Hole -B-

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NOTE:

The O-ring on the oil level tube -A- seals the oil level height tube -C-. Only this way can the ATF level be correctly adjusted.

Fig 8: Removing Oil Level Tube

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The ATF level tube -A- must be replaced after the second attempt.

Ignore T-Handle Hook 3438.

-- Continue ATF flushing. Refer to Flush Automatic Transmission Fluid (ATF)