17 21 500 Flushing transmission oil cooler and lines (automatic transmission)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

NOTE: Carry out the work steps listed when:
Installing a new or exchange transmission.
Flushing can only be carried out when the automatic transmission is removed.

Procedure:

Automatic transmission removed.

Connect appropriate adapters (see description below) to oil lines exiting from automatic transmission.

Use quick-release coupling to connecting line 17 2 019 from oil dispenser unit.

Use quick-release coupling to connect drain line 17 2 018 .

Hold and direct open end of drain line into a suitable collecting vessel.

Using oil dispenser unit, flush approx. 1 liter of transmission fluid (refer to BMW Service Operating Fluids) through oil lines and transmission oil cooler.

Reposition quick-release coupling.

Flush oil lines/transmission oil cooler in opposite direction with approx. 1 liter of transmission fluid (refer to BMW Service Operating Fluids).

Disconnect quick-release coupling.

Remove adapter.

NOTE: Dispose of flushing oil correctly.
Do not reuse under any circumstances.

Arrangement of flushing device for transmissions A5S 310Z, A5S 560Z, A5S 360R/390R, A4S 200R, A5S 325Z

Fig 1: Identifying Flushing Device For Transmission Arrangement Components