2021 Subaru Legacy repair manual

2021 Subaru Legacy workshop manual (BW): factory repair procedures and wiring diagrams

The 2021 Subaru Legacy (BW) factory repair manual, made for your VIN from Subaru's factory service data: step-by-step repair procedures, specifications and wiring diagrams for your exact Legacy. The 2021 Legacy was offered with two engines (listed below); the manual you get is for the one in your VIN.

One payment, one manual, a Google Top Quality Store. Other stores with the badge sell monthly access; we sell the manual outright, yours to keep and reuse.

Why owners choose factory-manuals.com

• Factory information, not an aftermarket book: the same Subaru procedures and specifications dealer technicians use
• Built for your VIN: only the engine, gearbox and options your Legacy actually has
• Clickable hyperlinks throughout the PDF: from a repair step straight to the diagram or torque table it mentions, with bookmarks and full-text search on top. Few manuals sold online have this
• Wiring included: diagrams, connector pinouts and component locations
• Works on any device, offline, and prints page by page for the garage
• Questions answered by a person, not a chatbot, before and after you buy

Not the owner's manual

Many people search for the 2021 Legacy owner's manual and need more than it gives. The difference:

• Owner's manual: controls, warning lights, maintenance schedule, fluid types
• Factory repair manual: diagnosis by trouble code, step-by-step repairs, tightening torques, wiring diagrams and connector views

The 2021 Legacy belongs to the seventh-generation Legacy (BW), model years 2020–2025. Years of the same generation share most procedures; equipment and electrical details still change from year to year, so the manual follows your VIN.

Engines available for the 2021 Legacy

• 2,5 liter, CVT, AWD
• 2,4 liter turbo, CVT, AWD.

The manual is made for the version in your VIN, so you don't have to work out your engine code.

Common work on a 2021 Legacy

• Suspension links, bushings and wheel bearings
• Spark plugs and ignition coils
• Coolant and transmission fluid service
• Battery, starter and charging faults
• Sensor faults: oxygen, ABS wheel speed, mass air flow
• Boost leaks and intercooler hoses
• Turbocharger oil feed and return lines

What NHTSA records show for the 2021 Legacy

The U.S. safety agency NHTSA lists 3 safety recalls and 31 owner complaints for the 2021 Legacy. The factory manual has the procedures for the parts involved.

• Power Train: Control Module (Tcm/Pcm/Tecm) (campaign 22V485000)
• Power Train: Park/Neutral Start Interlock Switch (campaign 23V755000)
• Air Bags: Front Passenger (campaign 24V227000)

Most owner complaints concern: Unknown or Other (7), Air Bags (6), Electrical System (5), Visibility/Wiper (5), Engine (2).

On a 2021 vehicle the 10th character of the 17-digit VIN is “M”, a quick way to confirm the model year before you order.

Other years of the same generation: 2020 Legacy, 2022 Legacy, 2023 Legacy, 2024 Legacy.

More Subaru repair manuals: 2025 BRZ, 2025 Crosstrek, 2026 Impreza, 2026 Outback, 2025 WRX, 2021 Crosstrek Hybrid, 2026 Forester, 2022 Forester Wilderness, 2021 Impreza, 2025 Impreza.

How you get it

1. Order and enter your 17-digit VIN.
2. We pull the Subaru service information for that VIN and put it into one searchable PDF with bookmarks and hyperlinks.
3. The download link arrives by email in 12–24 hours.

Sections of the 2021 Legacy service manual

• Vehicle-specific information
• General Description
• Engine
• Suspension
• Driveline/Axle
• Brakes
• Transmission/Transaxle
• Steering
• Heater & Airconditioner, Ventilator
• Airbag System & Seat Belt System
• Body & Electrical
• Fuse and Relay
• Power Supply Circuit
• Ground Circuit
• Active Sound Control System
• Airbag System
• Air Conditioning System
• AT Control System
• Audio and Navigation System
• Back-up Light System
• Blind Spot Detection/Rear Cross Traffic Alert
• CAN Communication System
• Charging System
• Clearance Light and Illumination Light System
• Combination Meter System
• Cruise Control System
• Daytime Running Light System
• Door Lock Control System
• Electric Power Steering System
• Engine Electrical System
• EyeSight System
• Front Accessory Power Supply Socket System
• Front Wiper and Washer System
• Headlight Beam Leveler System
• Headlight System
• Horn System
• Immobilizer System
• Interior Light System
• Keyless Access with Push Button Start System
• Mirror Heater System

Versions covered in 2021 Subaru Legacy repair manual:

2,5 liter, CVT, AWD

2,4 liter turbo, CVT, AWD.

Your manual is built for the version in your VIN.

This video is for information. Your manual looks and works the same way, but it is not identical.

Free, by email in 12-24 hours.