Technical Service Bulletin TSB011120Rev1 — 2021 TOYOTA TUNDRA
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
Bulletin Details
| TSB ID | TSB011120Rev1 |
| Manufacturer | |
| Vehicle | 2021 TOYOTA TUNDRA |
| Component | ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM) |
| Communication Date |
Bulletin Summary
TSB: When certain vehicle ECUs are replaced, the ECU security key must be written in order for that ECU to communicate on the vehicle network. The Techstream Software Health Check Results screen has been enhanced to help identify if a replacement ECU requires an ECU security key.
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 2021 TOYOTA TUNDRA
Service Campaign
ELECTRICAL SYSTEM
T-SB-0043-21 Rev
ELECTRICAL SYSTEM:SOFTWARE
T-SB-0087-21
POWER TRAIN
T-SB-0082-20
EQUIPMENT
T-SB-0082-20
ELECTRICAL SYSTEM
T-SB-0082-20
STRUCTURE
T-SB-0039-20
EQUIPMENT