T-TT-0679-21

Service Bulletin Details

Public Details for: T-TT-0679-21

Tt: for some 2wd 2022 my tundra vehicles, there may appear to be an atf leak from the extension shaft area at the rear of the transmission. This condition is specifically focused on new vehicles and is typically found during the pds inspect


- 2022 -

Models from 2022
2022 TOYOTA TUNDRA 
Tech Tip T-TT-0679-21
Subject
December 21, 2021
Market
Potential ATF Leak - Cleaning & Inspection Procedure
USA
Service Category
Section
Drivetrain
Automatic Transmission/Transaxle
Applicability
2022 Tundra 2WD
APPLICABLE VEHICLES
2022
Tundra
CONDITION
For some 2WD 2022 MY Tundra vehicles, there may appear to be an ATF leak from the extension
shaft area at the rear of the transmission. This condition is specifically focused on new vehicles and is
typically found during the PDS inspection. See picture below for reference how condition appears:
Rear
Front
RECOMMENDATIONS
Please do not remove the transmission assembly for further diagnosis. Perform the
cleaning/inspection procedure below for further direction:
1. Inspect the extension shaft area at the rear of the transmission for transmission fluid.
Expires on
Ver. 3.0 07/30/2021 T
12/21/2022
© 2021, Toyota Motor Sales, USA
Page 1 of 2
Tech Tip T-TT-0679-21
December 21, 2021
Subject
Market
Potential ATF Leak - Cleaning & Inspection Procedure
USA
Applicability
RECOMMENDATIONS
2. Spray Toyota Brake Parts cleaner, CRC “Brakleen”, or equivalent into the area between the
extension housing and the propeller shaft.
3. Blow shop air into that area.
4. Wipe the area clean with a clean shop towel.
5. Drive the vehicle for 5-10 miles at varying speeds, including highway speed, if available. If
vehicle cannot be driven, please follow the pattern below:
a. Set parking brake
b. Start the engine
c. Move gear selector through each gear, pausing at each gear for ~10 seconds
d. After engine has run for 10-15 minutes, turn off the vehicle
6. Recheck the area for any leaks.
a. If a leak is found, please create a TAS case and contact TAS for instruction prior to
diagnosing or repairing of the vehicle. If it is a weekend or holiday, continue with diagnosis and
repair. Please save all parts and/or details and contact TAS on the next available workday.
b. If residue is no longer present, then the procedure is complete.
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Expires on
Ver. 3.0 07/30/2021 T
12/21/2022
© 2021, Toyota Motor Sales, USA
Page 2 of 2

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