Sienna AWD V6-3.3L (3MZ-FE) (2004)
Case: All Technical Service Bulletins
Drivetrain - ATF/Gear Oil leak From Transfer Case Vent
T-SB-0138-10
Rev1
May 28, 2010
Transmission Fluid or Gear Oil Seepage from Transfer
Case Vent (AWD)
Service Category
Drivetrain
Section
Transfer/4wd/Awd
Market
USA
Applicability
TSB REVISION NOTICE
July 19, 2010 Rev1:
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Warranty Information has been updated.
Any previous printed versions of this service bulletin should be discarded.
TSB SUPERSESSION NOTICE
The information contained in this TSB supersedes TSB No. TC008-07.
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Applicability has been updated to include 2007 - 2009 Highlander, 2001 - 2005 RAV4, and 2007 - 2010 Sienna vehicles.
TSB No. TC008-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before
proceeding.
Introduction
Some 2004 - 2009 model year Highlander 2001 - 2005 model year RAV4 and 2004 - 2010 model year Sienna AWD (4WD) vehicles may display a
transmission fluid or gear oil seepage from a vent on the right side of the transfer case. The seepage is from the transfer RH (right-hand) bearing retainer
No.2 oil seal. Production improvements have been implemented to prevent this condition from occurring. Follow the repair procedure in this bulletin to