2012 Toyota Highlander 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
- Base
- Hybrid
- Hybrid Limited
- Limited
- SE
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
- Hybrid & Electric Vehicle Systems
- Maintenance & Lubrication
- Specifications
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Diagnostic Trouble Codes
- Technical Service Bulletins
- Wiring Diagrams
Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, an
If the front passenger seat occupant sensing system is out of calibration, the front passenger airba
Southeast Toyota will notify owners, and dealers will test the sensitivity of the occupant detection
Southeast Toyota is recalling certain model year 2008 and 2010-2013 Toyota Tundra, 2010-2012 Rav4, 2012 Toyota Sequoia, 2010-2011 Toyota Corolla, 2010-2011 Toyota Camry and Camry Hybrid, 2010-2013 Toy
An inaccurate label could lead to owners overloading their vehicles and tires. An overloaded vehicl
Southeast Toyota will notify owners and provide a corrected label with instructions concerning its i
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
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
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
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
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
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
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
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 138 technical service bulletins on file with NHTSA.
TAKATA RECALL - DRIVER AIR BAG DID NOT INFLATE FULLY DURING THE FRONTAL ACCIDENT ON 05/26/2018. PASSENGER AIR BAG DID NOT INFLATE AT ALL DURING THE FRONTAL ACCIDENT ON 05/26/2018. SIDE AIR BAGS DID NO
TL* THE CONTACT OWNED A 2012 TOYOTA HIGHLANDER. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 70 MPH, CONTROL OF THE VEHICLE WAS LOST DUE TO THE ROAD BEING WET. THE VEHCILE BEGAN TO SPIN HITT
TOYOTA HIGHLANDER WAS CROSSING INTERSECTION WITH GREEN LIGHT AND WAS STRUCK ON THE MIDDLE SIDE BY ONCOMING VEHICLE RUNNING A RED LIGHT. TOYOTA HIGHLANDER ROLLED 1.25 TIMES. TOYOTA HIGHLANDER HAD SEC
TL* THE CONTACT OWNS A 2012 TOYOTA HIGHLANDER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40 MPH, ANOTHER VEHICLE CRASHED INTO THE CONTACT'S VEHICLE AND THE AIR BAGS FAILED TO DEPLOY. THE CON
On December 29, 2021, while backing up my 2012 Toyota Highlander accelerated at speed that I was unable to control. One car that was packed in the driveway was damaged beyond repair. An office buildin
Showing the 5 most serious of 228 complaints filed with NHTSA.
