2021 Honda Ridgeline Service & Repair Manual

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The service and repair manual for the 2021 Honda Ridgeline — the 3.5L V6 engine, 6 trims. Matched to this exact model year, so the specifications and sequences are the ones Honda published for your car, not figures carried over from a neighbouring year.

01 / FitmentWhat this manual covers

Model year2021
Engines
3.5L V6 — 212 cu in, SOHC
TrimsRTL Crew Cab Pickup 4-Door · EX-L Crew Cab Pickup 4-Door · Black Edition Crew Cab Pickup 4-Door · Sport Crew Cab Pickup 4-Door · Touring Crew Cab Pickup 4-Door · RTL-E Crew Cab Pickup 4-Door
Federal record4 recalls · 131 complaints · 83 technical service bulletins (refreshed 2026-08-21)

02 / InsideSample pages from the 2021 Ridgeline manual

2021 Honda Ridgeline service manual page 12021 Honda Ridgeline service manual page 22021 Honda Ridgeline service manual page 32021 Honda Ridgeline service manual page 42021 Honda Ridgeline service manual page 52021 Honda Ridgeline service manual page 6

03 / ContentsSections in the manual

  • Quick Lookups 302
  • General Information 1,566
  • Accessories & Equipment 2,651
  • Heating, Ventilation & A/C (HVAC) 270
  • Body & Frame 700
  • Maintenance 75
  • Brakes 403
  • Restraints 320
  • Drivelines & Axles 99
  • Steering 233
  • Electrical 745
  • Suspension 303
  • Engine Mechanical 579
  • Transmission 1,029
  • Engine Performance 7,068
  • Front 328
  • Rear 245
  • Battery 12

04 / Known issuesRecalls on federal record for the 2021 Ridgeline

  1. Service Brakes, Hydraulic — foundation components › master cylinder · 23V458000
    Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.
  2. Seat Belts — rear/other › retractor · 21V900000
    An unsecured child restraint system can increase the risk of injury during a crash.
  3. Visibility — rearview mirrors/devices › exterior · 23V174000
    Detached mirror glass can reduce driver visibility, increasing the risk of a crash.
  4. Air Bags — sensor › occupant classification › front passenger · 24V064000
    An air bag that deploys unintentionally during a crash can increase the risk of injury.

Owners have filed 131 complaints and Honda has issued 83 technical service bulletins for the 2021 Ridgeline. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.

FAQQuestions about the 2021 Ridgeline manual

Is this manual specific to the 2021 Ridgeline?

Yes. It is the OEM manual matched to the 2021 model year, covering the 3.5L V6 across the RTL Crew Cab Pickup 4-Door, EX-L Crew Cab Pickup 4-Door, Black Edition Crew Cab Pickup 4-Door, Sport Crew Cab Pickup 4-Door, Touring Crew Cab Pickup 4-Door, RTL-E Crew Cab Pickup 4-Door trims. Specifications and procedure sequences are the ones Honda published for this year.

What 2021 Ridgeline problems does it help with?

4 recalls are on federal record for the 2021 Ridgeline, covering service brakes, hydraulic, seat belts, visibility. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Honda dealers.

Does it include 2021 Ridgeline wiring diagrams?

Yes — the complete wiring diagrams for the 2021 build, alongside repair procedures, specifications and diagnostics.

Is it a subscription?

No. $49.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.

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