NHTSA ID Number: 10142502
Manufacturer Communication Number: T-TT-0441-17
TSB/Document Date: 2018-07-02
Summary
TT: During previous air conditioning service, leakage prevention agent (A/C stop leak) may have been added to the A/C system. Adding stop leak products to the A/C system is not a recommended or approved Toyota
repair process. During A/C service, moisture enters the A/C system, and can react with the previously added A/C stop leak, forming a gelatinous substance. The gel substance that forms can cause the A/C compressor to bind and or seize.
Tech Tip T-TT-0441-17
April 12, 2017
Subject
Market
Precautions regarding usage of A/C stop leak during
A/C system service
USA
Service Category
Section
Vehicle Interior
Heating/Air Conditioning
Applicability
Applicable Models With Air Conditioning
APPLICABLE VEHICLES
2016-2018
2016-2018
2016-2018
2016-2018
2017-2018
2016-2018
2016-2018
2016-2018
2016-2018
2016-2018
2016-2018
2017-2018
2016-2018
2017-2018
2016-2018
2016-2018
Highlander
Sienna
Mirai
4Runner
iA
RAV4 HV
Yaris
Tacoma
Yaris SD MEX-Prod
Camry
Hiace
C-HR
Yaris R
iM
Prius C
Highlander HV
2016-2018
2016-2018
2016-2018
2016-2018
2016-2018
2016
2017-2018
2017-2018
2016-2018
2016-2018
2016-2018
2016-2018
2016-2018
2016-2018
2017-2018
2016-2018
Prius
Tundra
Land Cruiser
Sequoia
Avalon
Venza
Prius Prime
86
Corolla
Avalon HV
Prius V
Hilux
RAV4
Avanza
Yaris THAI-Prod
Camry HV
CONDITION
During previous air conditioning service, leakage prevention agent (A/C stop leak) may have been
added to the A/C system. Adding stop leak products to the A/C system is not a recommended or
approved Toyota repair process. During A/C service, moisture enters the A/C system, and can react
with the previously added A/C stop leak, forming a gelatinous substance. The gel substance that
forms can cause the A/C compressor to bind and or seize.
Expires on
Ver. 2.8 01/01/2017 T
04/12/2018
© 2017, Toyota Motor Sales, USA
Page 1 of 2
Tech Tip T-TT-0441-17
April 12, 2017
Subject
Market
Precautions regarding usage of A/C stop leak during
A/C system service
USA
Applicability
RECOMMENDATIONS
In order to help prevent gelling and possible damage to A/C system components that can occur as a
result.
1) Do not use any A/C stop leak products to diagnosis or repair suspected A/C system leaks.
2) Because it's unknown if A/C stop leak has been used for A/C system service in the past,
precautions should be taken to ensure moisture does not enter the A/C system. Following these
precautions might help prevent gelling from occurring if A/C stop leak is already present in the system.
A) Seal disconnected parts with plugs or vinyl tape
B) Vacuum purge A/C system
C) Confirm leaks are not present
LINK REFERENCES
This Tech Tip does not contain any link references
Expires on
Ver. 2.8 01/01/2017 T
04/12/2018
© 2017, Toyota Motor Sales, USA
Page 2 of 2
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TSB/Document ID: T-TT-0441-17
Replacement Service Bulletin Number:
MFR Communication Date: 2017-04-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:APPLIANCE:AIR CONDITIONER
MFR Component System:
MFR Component Subsystem:
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