Corolla L4-1.8L (1ZZ-FE) (2004)
Fluid Line / Hose: All Technical Service Bulletins
A/T - Whistle/Hoot Noise at 35-40 MPH
TRANSMISSION & CLUTCH
TC012-05
REVISED
Title:
WHISTLE/HOOT NOISE FROM
AUTOMATIC TRANSAXLE
Models:
'03 - '08 Corolla (1ZZ-FE)
September 1, 2005
TSB REVISION NOTICE:
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October 26, 2007: 2007 and 2008 model years have been added to Applicable Vehicles.
Previous versions of this TSB should be discarded.
Introduction
Some 2003 - 2008 model year Corolla vehicles equipped with the 1ZZ-FE engine and an automatic transaxle (ATM) may exhibit a whistle" or "hoot"
noise under light acceleration at 35 - 40 mph (56 - 64 km/h) with the ATM at normal operating temperature. ATM cooler lines have been modified to
reduce this condition on customer complaint vehicles.
Applicable Vehicles
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2003 - 2008 model year Corolla vehicles equipped with the 1ZZ-FE engine and an automatic transaxle (ATM).
Parts Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from
the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Repair Procedure
1.
Remove the existing ATM oil cooler lines from the radiator and ATM.