Alternator/Serpentine Belt Squealing 2007 Yaris 1NZ-FE Engine - Toyota Yaris Forums

nighthawk421 · 10-25-2020, 01:16 AM

I have a 2007 Yaris 3dr. liftback 184,000 miles with the 1.5L INZ-FE engine. Whenever I leave AC on when turning off car, the serpentine belt makes a loud squealing sound for a few moments immediately after starting car again. When I turn off AC before shutting off engine, it generally does not make the squealing sound when engine is started up again.

I asked the local Toyota dealership once, and they said that this was typical of this Toyota model.

Questions:

a. Does anyone else have this issue with the Yaris 1NZ-FE engine?
b. Is there a known reason for this?
c. Is there anything that can be done other than turning off all loads (lights, AC, etc...) prior to starting engine?
d. Is this a sign of upcoming alternator/serpentine belt/belt tension pully failure?

Thanks for your help and input.

10-25-2020, 01:16 AM	#1
nighthawk421 Drives: 2007 Yaris 3 Door Liftback Join Date: May 2012 Location: Florida Posts: 3	Alternator/Serpentine Belt Squealing 2007 Yaris 1NZ-FE Engine I have a 2007 Yaris 3dr. liftback 184,000 miles with the 1.5L INZ-FE engine. Whenever I leave AC on when turning off car, the serpentine belt makes a loud squealing sound for a few moments immediately after starting car again. When I turn off AC before shutting off engine, it generally does not make the squealing sound when engine is started up again. I asked the local Toyota dealership once, and they said that this was typical of this Toyota model. Questions: a. Does anyone else have this issue with the Yaris 1NZ-FE engine? b. Is there a known reason for this? c. Is there anything that can be done other than turning off all loads (lights, AC, etc...) prior to starting engine? d. Is this a sign of upcoming alternator/serpentine belt/belt tension pully failure? Thanks for your help and input.

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