Various postings about maintaining the 4EAT refer to simple draining and refilling of the transmission. However, later model Subarus with 4-speed transmissions might have what is called the Phase II Direct Control transmission which, it appears, requires more than a simple refill when the pan is emptied.
I posted essentially the same enquiry on subaruoutback.org (http://www.subaruoutback.org/forums/...680#post101680
) but thought I would highlight the issue here as well and hopefully get some input from Forester users. (I started out here, and it was the help of this forum that got me into a Subaru, albeit an Outback.)
In the Automatic Transmission Fluid replacement section of the MY07 Legacy/Outback service manual (pages 4AT-25 and 26) there is a requirement to "7) Bleed the air of control valve." after the fluid is drained and refilled. The 4EAT Phase II training manual (module 304, updated January 2007) also notes (on page 58) the requirement for the air bleed procedure with a simple drain and fill, as follows:
"Whenever the valve body of a Direct 4EAT is removed or transmission fluid drained from the sump
, the air must be bled from the valve body. You can accomplish this with the help of the NSM or Select monitor III. You will need to follow the specific procedure in the appropriate service manual for the year and model Subaru you are servicing. Make sure the transmission fluid is less than 140 degrees F. before performing the air bleed procedure." (Bold added)
(The air bleed procedure is set out on page 4AT-55 of the 07 Legacy/Outback manual.)
I believe the Direct 4EAT is the 4-speed automatic transmission used at least since MY2005, if not earlier, in North American Subarus. Has anyone had experience draining and refilling the ATF in a Direct 4EAT? What about this air bleeding requirement?