2021 Honda Pilot Service and Repair Manual

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Factory-Grade Data

2021 Honda Pilot 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 and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • LX Sport Utility 4-Door
  • Special Edition Sport Utility 4-Door
  • EX-L Sport Utility 4-Door
  • Touring Sport Utility 4-Door
  • Black Edition Sport Utility 4-Door
  • EX Sport Utility 4-Door
  • Elite Sport Utility 4-Door
  • Prime Sport Utility 4-Door

Engines covered

  • 3.5L 3471CC V6 GAS SOHC Naturally Aspirated

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
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2021 Honda Pilot Recalls & Complaints

NHTSA #23V45800029/06/2023Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Honda (American Honda Motor Co.) is recalling certain 2020-2021 Civic, 2020-2023 Ridgeline, 2021-2023 Passport, 2021-2022 Pilot, and 2020 Acura MDX vehicles. The tie rod fastener that connects the br

Consequence

Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash

Remedy

Dealers will inspect and repair the brake booster assembly as necessary, free of charge. Owner noti

NHTSA #20V44000028/07/2020Component: ELECTRICAL SYSTEM:SOFTWARE

Honda (American Honda Motor Co.) is recalling certain 2019-2021 Pilot, 2019-2020 Odyssey and 2019-2020 Passport vehicles. Incorrect central network software programming may cause several errors to oc

Consequence

A delayed or inoperative rearview camera display can reduce the driver's view of what is behind the

Remedy

Honda will notify owners that updated software is available. Owners have the option to either follo

NHTSA #20V43900028/07/2020Component: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Honda (American Honda Motor Co.) is recalling certain 2018-2020 Odyssey, 2019-2020 Passport, and 2019-2021 Pilot vehicles. Incorrect instrument panel control module software can cause the instrument

Consequence

Operating a vehicle without a functioning instrument panel or rearview camera display increases the

Remedy

Honda will notify owners, and dealers will reprogram the instrument panel control module software, f

NHTSA #23V85800018/12/2023Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX,

Consequence

Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy

Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2

NHTSA #23V17400016/03/2023Component: VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

Honda (American Honda Motor Co) is recalling certain 2020-2021 Pilot and Ridgeline, and 2020-2022 Passport and Odyssey vehicles. The heating pads behind both side-view mirrors may not be bonded prope

Consequence

Detached mirror glass can reduce driver visibility, increasing the risk of a crash.

Remedy

Dealers will replace both left and right side-view mirrors, free of charge. Owner letters were mail

NHTSA #23V43100015/06/2023Component: BACK OVER PREVENTION:DISPLAY FUNCTION

Honda (American Honda Motor Co.) is recalling certain 2018-2023 Odyssey, 2019-2022 Pilot, and 2019-2023 Passport vehicles. Due to a faulty Media Oriented Systems Transport (MOST) communication coaxia

Consequence

A rearview camera that does not display an image can reduce the driver's rear view, increasing the r

Remedy

Dealers will replace the MOST cable harness and install a straightening cover over the vehicle cable

NHTSA #24V06400001/02/2024Component: AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V,

Consequence

An air bag that deploys unintentionally during a crash can increase the risk of injury.

Remedy

Dealers will replace the seat weight sensors, free of charge. Owner notification letters were maile

TSB #11025607

Service Bulletin - The wireless charger starts charging the phone and then stops charging, even when the phone remains in the correct position on the charger due to software specifications that can cause some phones to have issues charging.

TSB #11022756

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 Passport Blacks, TrailSports & 2019-2022 Pilots with a customer complaint of the taillight and/or brake light being inoperative. Vehicles may also have

TSB #11021956

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 Passport Blacks, TrailSports & 2019-2022 Pilots with a customer complaint of the taillight and/or brake light being inoperative. Vehicles may also have

TSB #11021752

Service Bulletin - One or more accessory running board lights are flickering or not working due to a faulty running board light assembly.

TSB #11021742

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 Passport Blacks, TrailSports & 2019-2022 Pilots with a customer complaint of the taillight and/or brake light being inoperative. Vehicles may also have

TSB #11020578

Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately

TSB #11020574

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 Passport Blacks, TrailSports & 2019-2022 Pilots with a customer complaint of the taillight and/or brake light being inoperative. Vehicles may also have

TSB #11011045

Service Bulletin - The AWD warning light is on potentially due to water intrusion into the rear differential pump motor connector area that corrodes the terminals.

Showing the 8 most recent of 99 technical service bulletins on file with NHTSA.

20231030Component: SERVICE BRAKES, HYDRAULICCrash reported2 injured

The contact owned a 2021 Honda Pilot. The contact stated that while her friend was driving at an undisclosed speed, with the brake pedal depressed all the way to the floorboard, the vehicle failed to

20260319Component: AIR BAGSCrash reported1 injured

I am submitting this letter as an official complaint regarding a potential safety defect involving the airbag system in my 2021 Honda Pilot. I was involved in a motor vehicle accident on February 3, 2

20260128Component: POWER TRAIN:AUTOMATIC TRANSMISSIONCrash reported1 injured

The contact owns a 2021 Honda Pilot. The contact stated that while the engine was idling and with the gear shifter in the park position, the contact reached into the vehicle from the front driver's do

20231105Component: UNKNOWN OR OTHERCrash reported1 injured

On October 18, 2023, at about 11 am, I was approaching to enter our driveway with my foot on the brake system when all of the sudden the car sped up at a very high speed that I was unable to control.

20231105Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKINGCrash reported1 injured

On October 18, 2023, at about 11 am, I was approaching to enter our driveway with my foot on the brake system when all of the sudden the car sped up at a very high speed that I was unable to control.

Showing the 5 most serious of 650 complaints filed with NHTSA.

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