2018-2019 Toyota Tundra Bang Noise from HVAC Compressor After Long Periods of No Usage T-TT-0661-21

MG

Moderator
Please see Tech Tip T-TT-0661-21

APPLICABLE VEHICLES:

2018-2021 Toyota Tundra

CONDITIION:
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.

 
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