2020 Toyota Yaris Service and Repair Manual

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Factory-Grade Data

2020 Toyota Yaris 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

  • L, Automatic Trans
  • L, Standard Trans
  • LE, 4D Hatchback
  • LE, 4D Sedan, Automatic Trans
  • LE, 4D Sedan, Standard Trans
  • XLE, 4D Hatchback
  • XLE, 4D Sedan

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

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Vehicle Safety Data

2020 Toyota Yaris Recalls & Complaints

NHTSA #21V61700027/09/2021Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2019-2020 Yaris, Yaris Hatchback, and Yaris Sedan vehicles. An impeller within the low-pressure fuel pump may crack and deform,

Consequence

A fuel pump failure may cause an engine stall, increasing the risk of a crash.

Remedy

Dealers will replace the low-pressure fuel pump assembly, free of charge. Owner notification letter

TSB #11028712

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

TSB #11012744

The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicl

TSB #11012743

To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from weather elements and in

TSB #11012742

Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal areas such as the hood

TSB #11012735

Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination. Follow the Removal Procedure i

TSB #11012727

Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc. This type of contamination can be identified by the

TSB #11007455

Some 2005 2024 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

TSB #11007445

The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicl

Showing the 8 most recent of 73 technical service bulletins on file with NHTSA.

20240925Component: SERVICE BRAKES

The vehicle do unnecessary abrupt breaking in the highway when the road are reduced due to reparation. In addition in two times, when I tried to park to my garage in the back of other vehicle the brea

20240925Component: VEHICLE SPEED CONTROL

The vehicle do unnecessary abrupt breaking in the highway when the road are reduced due to reparation. In addition in two times, when I tried to park to my garage in the back of other vehicle the brea

20240925Component: FORWARD COLLISION AVOIDANCE: WARNINGS

The vehicle do unnecessary abrupt breaking in the highway when the road are reduced due to reparation. In addition in two times, when I tried to park to my garage in the back of other vehicle the brea

20230913Component: ELECTRICAL SYSTEM

This 2020 Yaris is registered to me but driven by my daughter to her workplace less that 3 miles away. The first incident involved the engine laboring to start and when she came home, the battery was

20230913Component: ENGINE

This 2020 Yaris is registered to me but driven by my daughter to her workplace less that 3 miles away. The first incident involved the engine laboring to start and when she came home, the battery was

Showing the 5 most serious of 16 complaints filed with NHTSA.

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