OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.
2021 Toyota Prius Prime Service and Repair Manual
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Covers Every System & ComponentEvery procedure for the 2021 Toyota Prius Prime
2021 Toyota Prius Prime service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications, torque values, and reference data
- Electrical diagnostics with full wiring diagrams
- Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
- Diagnostic trouble codes and troubleshooting flow
- Maintenance schedules and fluid capacities
Trims covered
- LE
- Limited
- XLE
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Maintenance & Lubrication
- Specifications
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Diagnostic Trouble Codes
- Technical Service Bulletins
- Wiring Diagrams
Payment & Security
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2021 Toyota Prius Prime Recalls & Complaints
Some 2018 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.
Some 2005 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this Servic
Some ECUs can set a DTC that is common with other ECUs. This can lead to accidental use of the wrong repair manual when diagnosing these type of DTCs.
Some ECUs can set a DTC that is common with other ECUs. This can lead to accidental use of the wrong repair manual when diagnosing these type of DTCs.
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant
To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be u
To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be u
Showing the 8 most recent of 122 technical service bulletins on file with NHTSA.
I was slowly entering a handicapped parking place right in front of a business. The distance from the front of the parking space to the building wall was about 15 feet, one car length. I approached t
I was slowly entering a handicapped parking place right in front of a business. The distance from the front of the parking space to the building wall was about 15 feet, one car length. I approached t
I was slowly entering a handicapped parking place right in front of a business. The distance from the front of the parking space to the building wall was about 15 feet, one car length. I approached t
My vehicle is equipped with Toyota Safety Sense, which includes Full-Speed Range Dynamic Radar Cruise Control (DRCC) and a Pre-Collision System. Today, while driving with DRCC engaged, my vehicle foll
My vehicle is equipped with Toyota Safety Sense, which includes Full-Speed Range Dynamic Radar Cruise Control (DRCC) and a Pre-Collision System. Today, while driving with DRCC engaged, my vehicle foll
Showing the 5 most serious of 19 complaints filed with NHTSA.
Other Years of the Toyota Prius Prime
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