T-TT-0661-21

Service Bulletin Details

Public Details for: T-TT-0661-21

Tt: customer complaint of hvac compressor ?Bang? Type noise upon initial compressor engagement when air conditioning has not been operated for an extended period (~24 hrs. Or longer). The noise is caused by compressor oil collecting in t


- 2021 - 2020 - 2019 - 2018 -

Models from 2021
2021 TOYOTA TUNDRA
Models from 2020
2020 TOYOTA TUNDRA
Models from 2019
2019 TOYOTA TUNDRA
Models from 2018
2018 TOYOTA TUNDRA 
Tech Tip T-TT-0661-21
July 21, 2021
Subject
Market
Bang Noise from HVAC Compressor After Long
Periods of No Usage
USA
Service Category
Section
Vehicle Interior
Heating/Air Conditioning
Applicability
2018-2019 Tundra
APPLICABLE VEHICLES
2018-2021
Tundra
CONDITION
Customer complaint of HVAC compressor “Bang” type noise upon initial compressor engagement
when air conditioning has not been operated for an extended period (~24 hrs. or longer).
The noise is caused by compressor oil collecting in the compressor and upon initial compressor
engagement, the compressor must pump the oil out causing the “Bang” noise. Compressor
engagements thereafter are normal and less audible as the collected oil has been pumped out.
RECOMMENDATIONS
This is a normal characteristic and no repairs are recommended.
LINK REFERENCES

Compressor Engagement Bang Noise
Expires on
Ver. 2.13 01/01/2021 T
07/21/2022
© 2021, Toyota Motor Sales, USA
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