When I had my dealer replace my neutral override switch in my corolla(2009), I also asked them to look into a problem that was noticeable lately. The car, when cold-started, rattles briefly. The dealer said that it was a known problem.
What if I decide not to fix this? Will my engine die? The dealer said he will try to have Toyota pick up the tab, but apparently this is a $3500 job (!???)
"T-SB-0087-09 - March 13, 2009
Brief Engine Knock/Rattle Noise at Cold Startup
Service Category: Engine/Hybrid System
Section: Engine Mechanical
2009 Corolla - Engine(s): 2ZR. Transmission(s): 4AT, 5MT. VDS(s): BL40E, BU40E.
2009 Matrix - Drive Type(s): 2WD. Engine(s): 2ZR. Transmission(s): 4AT, 5MT. VDS(s): KU40E
Immediately following a cold soak startup, some 2009 model year Corolla and Matrix vehicles may exhibit a brief knock/rattle noise from the engine compartment for approximately one second. Follow the repair procedure below to address customer concerns.
Previous Part Number: 13050-0T010. Current Part Number: Same. Part Name: Gear Assembly, Camshaft Timing. Qty: 1.
Previous Part Number: 11213-37020. Current Part Number: Same. Part Name: Gasket, Cylinder Head Cover. Qty: 1.
Previous Part Number: 11159-37010. Current Part Number: Same. Part Name: Gasket, Camshaft Bearing Cap Oil Hole. Qty: 2.
Previous Part Number: 13552-0T020. Current Part Number: Same. Part Name: Gasket, Timing Chain Tensioner. Qty: 1.
OP Code: EG9006. Description: R & R Camshaft Timing Gear Assembly. Time: 1.5. OFP: 13050-0T010. T1: 06. T2: 40.
This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for 60 months or 60,000 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.
Here is the noise I have