XC90 FWD L6-3.2L VIN 96 B6324S2 (2010)
Fluid Line/Hose: Technical Service Bulletins
A/T - Cooler/Line Flushing Information
Retailer Technical Journal 19495
Reference: VIDA, VSTG, RTJ 16724
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.
THIS RTJ SUPERSEDES THE PREVIOUS VERSION OF RTJ 19495 RELEASED 10-8-2008. A LABOR OPERATION HAS BEEN
REMOVED. THE DESCRIPTION OF BURNT OIL HAS BEEN EDITED. PLEASE UPDATE YOUR FILES.
The purpose of this RTJ is to work as a guideline for technicians when an automatic transmission is being replaced. In order for modern automatic
transmissions to properly adapt to transmission wear while maintaining comfortable shift quality, the pressure control is closely monitored. For this
reason, the automatic transmission fluid (ATF) must meet the transmission manufacturer's specifications.
A faulty transmission often has debris in the ATF, the coolers, the lines, and throughout the transmission. This debris must be properly flushed out before
a new transmission is installed. Flushing the ATF using the transmission oil pump of the newly installed transmission will not suffice and can possibly
cause damage to the new unit. Depending on the condition of the ATF, the transmission coolers and lines may need to be replaced. The information
below is copied directly from VIDA.
Once a transmission is properly diagnosed to be faulty and needs to be replaced, it is important that the proper procedures are followed for flushing out
the used ATF from the ATF coolers and lines. Note that some vehicles have two coolers; the cooler in the side of the radiator and the auxiliary cooler.
When an automatic transmission is replaced, follow VIDA to reset adaptive memory. Simply disconnecting the TCM (Transmission Control Module) or
power from the TCM does not reset adaptive memory!
On all vehicles, always flush the radiator, coolers, and lines before installing the new transmission. The guidelines and procedures for flushing vary with
There is a procedure for flushing coolers and lines found in a hyperlink in the VIDA transmission/gearbox installation procedure called Transmission,
preparations before installing for AW (Aisin Warner) 5- and 6- speed automatics and in the VIDA transmission replacement procedure for the AW
The guidelines for flushing coolers on a GM 4T65 4-speed automatic are in VIDA/Information/Repair/Transmission, removing and there is a hyperlink
in VIDA/Information/Repair/Transmission, installing for a flushing procedure called Oil cooler, flush cleaning. The guidelines for the 1999-2005 S80
will be updated to match the XC90.
More details about these guidelines can be found below.
On a GM 4T65 (2003-2005 XC90 T6 and 1999-2005 580 6-cyl), if there is:
glycol in the transmission fluid (refer to RTJ 16724 for more information on checking for glycol contamination), this would indicate an internal leak
in the radiator requiring complete replacement of the ATF cooling system (radiator, auxiliary cooler [if applicable*], and cooler lines).