Flushing Procedure

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Carry out the work steps listed when:
Fitting a new or replacement transmission Flushing can only be carried out with the automatic transmission removed.

Procedure:

Automatic transmission removed.

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

Connect the connecting line 17 2 019 from the oil collection unit with the quick-release coupling.

Connect drain line 17 2 018 using quick-release coupling.

Feed open end of drain line into a suitable collection container.

Using oil collection unit, flush approx. 1 liter of transmission fluid through oil lines and oil cooler. See OPERATING FLUIDS - AUTOMATIC TRANSMISSION .

Reposition quick-release couplings.

Flush oil lines/oil cooler in opposite direction with approx. 1 liter of transmission fluid. See OPERATING FLUIDS - AUTOMATIC TRANSMISSION .

Disconnect quick-release couplings, remove adapters.

NOTE: Dispose of flushing oil properly; do not under any circumstances reuse it.

Fig 1: Identifying Flushing Device For Transmissions A5S 310Z, A5S 560Z, A5S 360R/390R, A4S 200R, A5S 325Z, GA6HP26Z

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Identifying Flushing Device For Transmission A4S 310R

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Identifying Flushing Device For Transmission A4S 300J

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 4: Identifying Flushing Device For Transmission A5S 440Z

Courtesy of BMW OF NORTH AMERICA, INC.