Introduction Of New Automatic Transmission Fluid (TC009-03)

Publication date: 2004-12-13
Reference number: TC009-03

INTRODUCTION OF NEW AUTOMATIC TRANSMISSION FLUID

TECHNICAL SERVICE BULLETIN

Reference Number(s): TC009-03, Date of Issue: December 13, 2004

LEXUS:	2004 - 2005 GX 470, LS 430 & LX 470
SECTION:	TRANSMISSION & CLUTCH
COPYRIGHT:	© 2018 Lexus, a division of Toyota Motor Sales, USA License Agreement TMS1002

Superceded Bulletin(s): TC009-03, Date of Issue: October 17, 2003

NOTE:

December 13, 2004: TSIB content has been expanded; 2005 model year added to Applicable Vehicles.
The previous TSIB should be discarded.

INTRODUCTION

New automatic transmission fluid (ATF) "WS" has been introduced on the 2004 - 2005 model year GX 470, LS 430 and LX 470 vehicles. The following will provide information regarding service precautions and identification methods for vehicles which use ATF "WS."

NOTE: ATF "WS" is NOT compatible with any other type of transmission fluid.

APPLICABLE VEHICLES

2004 - 2005 model year GX 470, LS 430 and LX 470 vehicles.

PARTS INFORMATION

Previous Part Number	Current Part Number	Part Name	Qty
N/A	08886-02303	ATF WS (20 liter)	-
N/A	08886-02305	ATF WS (4 liter)	-

WARRANTY INFORMATION

OP Code	Description	Time	OFP	T1	T2
N/A	Not Applicable to Warranty	-	-	-	-

IDENTIFICATION PROCEDURE

The following symptoms will occur if non-WS ATF is put into a WS compatible automatic transmission:

Non-WS ATF has a higher viscosity. Because of this, response to changes in fluid pressure decreases, lengthening shift time, causing shift flare.
When the fluid temperature is low, (approximately -40°F (-40°C), air can enter the oil pump causing cavitation resulting in low fluid pressure.
Fuel consumption increases.

The following symptoms will occur if ATF WS is put into a non-WS compatible automatic transmission:

ATF WS has a lower viscosity than other ATFs. Because of this, response to changes in fluid pressure increases, shortening shift time, causing shift shock.
If WS is filled into a non-WS automatic transmission, the fluid could leak out under high temperatures (approximately 284°F (140°C).

VEHICLES THAT USE ATF WS CAN BE IDENTIFIED BY

ATF dipstick is no longer installed.
"WS" stamped on the refill plug.

FLUID LEVEL INSPECTION

Check the fluid level by inspecting for leakage. If there are no leaks present at time of inspection, the fluid level is correct.

For details about the ATF WS filling procedures, refer to the Technical Information System (TIS), 2004 or 2005 model year GX 470, LS 430 or LX 470 Repair Manual; Automatic Transmission / Trans: Automatic Transmission Fluid (A750E/A750F) .