Technical Service Bulletin T-SB-0001-18 Rev — 2018 TOYOTA HIGHLANDER
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | T-SB-0001-18 Rev |
| Manufacturer | |
| Vehicle | 2018 TOYOTA HIGHLANDER |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
TSB: When completing a transaxle assembly replacement, Engine Control Module (ECM) (SAE term: Powertrain Control Module [PCM]) replacement, or ECM (PCM) reprogram, ensure the correct ECM (PCM) software is matched with the transaxle assembly hardware. Some 2017 ? 2018 model year Highlander and Sienna vehicles require different ECM (PCM) software based on the transaxle assembly hardware installed in the vehicle.
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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