Technical Service Bulletin T-SB-0021-25 — 2024 TOYOTA GRAND HIGHLANDER HYBRID
ENGINE
Bulletin Details
| TSB ID | T-SB-0021-25 |
| Manufacturer | |
| Vehicle | 2024 TOYOTA GRAND HIGHLANDER HYBRID |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.
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.
Other TSBs for the 2024 TOYOTA GRAND HIGHLANDER HYBRID
T-SB-0060-25
ENGINE
T-SB-0111-24
STRUCTURE:BODY
T-SB-0082-24 Rev1
POWER TRAIN
T-SB-0082-24
POWER TRAIN
T-SB-0052-24
ELECTRICAL SYSTEM
T-SB-0017-24 Rev1
ENGINE
T-SB-0120-20 Rev2
ELECTRICAL SYSTEM
T-SB-0017-24
ENGINE