Technical Service Bulletin ZJC-Toyota POL19 — 2018 TOYOTA HIGHLANDER
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | ZJC-Toyota POL19 |
| Manufacturer | |
| Vehicle | 2018 TOYOTA HIGHLANDER |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
Customer Support Program Bulletin: Toyota has received reports indicating potential symptoms, such as a whine noise from the transmission while driving, harsh shifting, reduced power, and master warning light/check engine light illumination, in the subject vehicles that are equipped with a model UA80 transmission. There is a possibility that a washer tab, designed to prevent the loosening of a nut inside the affected transmissions, was not sufficiently bent during assembly. This could lead to the nut loosening and, over time, lead to the symptoms described above.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
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TTT069822
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