2018 INFINITI Q50 Service and Repair Manual

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Factory-Grade Data

2018 INFINITI Q50 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Red Sport 400 Sedan 4-Door
  • Premium Sedan 4-Door
  • Perfection Sedan 4-Door
  • Hybrid Sedan 4-Door
  • Luxe Sedan 4-Door
  • Sport Sedan 4-Door
  • Pure Sedan 4-Door
  • Seduction Sedan 4-Door
  • Luxury Sedan 4-Door
  • Hybrid Luxe Sedan 4-Door
  • 400 Sport Sedan 4-Door

Engines covered

  • 3.0L 2997CC V6 GAS DOHC Turbocharged
  • 2.0L 1991CC l4 GAS DOHC Turbocharged
  • 3.7L 3696CC V6 GAS DOHC Naturally Aspirated
  • 3.5L 3498CC V6 FULL HYBRID EV-GAS (FHEV) DOHC 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

2018 INFINITI Q50 Recalls & Complaints

NHTSA #17V47600027/07/2017Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Nissan North America, Inc. (Nissan) is recalling certain 2016-2018 Infiniti Q50 and 2017 Infiniti Q60 vehicles equipped with a 2.0L engine. Incorrect Fuel Pump Control Module (FPCM) software may allo

Consequence

An engine stall can increase the risk of a crash.

Remedy

Nissan will notify owners, and Infiniti dealers will reprogram the Fuel Pump Control Module (FPCM) w

NHTSA #24V47000021/06/2024Component: POWER TRAIN:DRIVELINE:DRIVESHAFT

Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft c

Consequence

A broken driveshaft can result in a loss of drive power, or a vehicle roll away when the vehicle is

Remedy

Dealers will replace the driveshaft, free of charge. Owner notification letters were mailed August

NHTSA #19V65400012/09/2019Component: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel,

Consequence

The lack of an image in the back-up camera display increases the risk of a crash.

Remedy

Nissan will notify owners in phases, having dealers update the back-up camera settings software, fre

TSB #11031720

CERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision damage or other vehicle repair, a replacement Certification Label or VIN Plate/Label may be needed. HINT: Certification Label = FMVSS (Federal Motor Vehi

TSB #11031701

TELEMATICS SERVICE INFORMATION See ITB19-029 for models built after those listed above for a different Service Procedure. SERVICE INFORMATION The Applied Vehicles are equipped with a wireless communication device called a Telematics Communi

TSB #11014469

AEB WARNING LIGHT IS ON WITH WARNING MESSAGES DISPLAYED ON COMBINATION METER APPLIED VEHICLES: 2015-2024 Q50 (V37) 2015-2018 Q50 Hybrid (HV37) 2017-2022 Q60 (CV37) 2015-2019 Q70 (Y51) 2015-2018 Q70 Hybrid (HY51) 2019-2024 QX50 (J55) 2022-20

TSB #11014069

***** Retailer Announcement ***** INFINITI is committed to providing the highest levels of product quality and customer satisfaction. Therefore, INFINITI is conducting a warranty extension to Full Useful Life (FUL) of 10 years or 120,000 mi

TSB #11014067

MIL ON WITH DTC(S) STORED IN THE ECM This bulletin is no longer active. Please discard previous versions of ITB17-050.

TSB #11014066

TURBOCHARGER REPLACEMENT PROCEDURE APPLIED ENGINES: VR30DDTT IF YOU CONFIRM One or both turbochargers require replacement. ACTION 1. Replace the affected turbocharger(s). Refer to the SERVICE PROCEDURE in this bulletin for the updated proce

TSB #11013263

ENGINE ROOM SUB-HARNESS IF YOU CONFIRM DTC P06DA-00 for ENGINE OIL PRESSURE CONTROL is stored as current (active) with CONSULT-III plus (C-III plus). ACTION Replace the engine room sub-harness. Refer to the SERVICE PROCEDURE in this bulleti

TSB #11009064

DTC B00A0-00 STOREIF YOU CONFIRM DTC B00A0-00 (OCCUPANT DETECTION SENSOR UNIT) is stored, AND OCS zero point reset cannot be performed, (continued on the next page)D

Showing the 8 most recent of 159 technical service bulletins on file with NHTSA.

20190401Component: STRUCTURE:BODYCrash reported

AS I WAS PARKING THE VEHICLE AT 5MPH BEHIND A PARKED CAR, WITH THE FRONT TIRES SLIGHTLY TURNED TO THE LEFT, THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE SUDDENLY ACCELERATED BUT THE VEHICLE FAILED TO ST

20190401Component: SERVICE BRAKESCrash reported

AS I WAS PARKING THE VEHICLE AT 5MPH BEHIND A PARKED CAR, WITH THE FRONT TIRES SLIGHTLY TURNED TO THE LEFT, THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE SUDDENLY ACCELERATED BUT THE VEHICLE FAILED TO ST

20190401Component: VEHICLE SPEED CONTROLCrash reported

AS I WAS PARKING THE VEHICLE AT 5MPH BEHIND A PARKED CAR, WITH THE FRONT TIRES SLIGHTLY TURNED TO THE LEFT, THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE SUDDENLY ACCELERATED BUT THE VEHICLE FAILED TO ST

20180724Component: ENGINEFire reported

THE CAR CAUGHT FIRE UNDER THE HOOD AND COMPLETELY BURNED UP IN THE PARKING LOT AS I WAS EXITING THE VEHICLE UPDATED 12/4/18*JB

20260505Component: ELECTRICAL SYSTEM

I am submitting this complaint regarding a safety defect in my 2018 Infiniti Q50, which was manufactured prior to May 1, 2018. Despite matching the make, model, and production timeframe associated wit

Showing the 5 most serious of 63 complaints filed with NHTSA.

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