Technical Service Bulletin T-SB-0078-21 Rev — 2021 TOYOTA COROLLA HATCHBACK
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | T-SB-0078-21 Rev |
| Manufacturer | |
| Vehicle | 2021 TOYOTA COROLLA HATCHBACK |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
TSB: Some 2021 ? 2022 model year Corolla and Corolla Hatchback and 2021 model year RAV4 vehicles may exhibit a Parking Brake Malfunction warning message on the Multi-information Display (MID) with Diagnostic Trouble Code (DTC) C059746 (Brake System Control Module ?A? Calibration / Parameter Memory Failure) present. This bulletin addresses DTC C059746 only, it may appear before or after completing the Repair Procedure in this bulletin. No other condition or DTC should be present. If there are additional DTCs, continue diagnosis using applicable Repair Manual before completing the Repair Procedure outlined in this service bulletin
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 COROLLA HATCHBACK
TSB010421
LANE DEPARTURE
TSB008921Rev2
ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
T-SB-0035-20 Rev
EQUIPMENT
T-SB-0095-20
ELECTRICAL SYSTEM
T-SB-0041-20 Rev
STRUCTURE
T-SB-0029-20 Rev
WHEELS