2019 Mazda CX-9 Service and Repair Manual

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Factory-Grade Data

2019 Mazda CX-9 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

  • GT Sport Utility 4-Door
  • GS-L Sport Utility 4-Door
  • Touring Sport Utility 4-Door
  • i Grand Touring Sport Utility 4-Door
  • Grand Touring Sport Utility 4-Door
  • GS Sport Utility 4-Door
  • Sport Sport Utility 4-Door
  • I Sport Sport Utility 4-Door
  • Signature Sport Utility 4-Door

Engines covered

  • 2.5L 2488CC 152Cu. In. l4 GAS DOHC Turbocharged

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

2019 Mazda CX-9 Recalls & Complaints

NHTSA #19V77000028/10/2019Component: TIRES:TREAD/BELT

Mazda North American Operations (Mazda) is recalling certain 2019 CX-9 vehicles equipped with Sumitomo Falken ZIEX CT50 A/S tires, size P255/50R20 104V, having date code 1619. An incorrect rubber com

Consequence

A detached tire tread can decrease vehicle stability and increase the risk of a crash.

Remedy

Mazda will notify owners, and dealers will inspect all four tire serial numbers, replacing the tires

NHTSA #21V87500012/11/2021Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump

Consequence

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

Remedy

Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18

TSB #11032104

DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label. To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer

TSB #11032103

This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all ma

TSB #11032101

This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, cl

TSB #11032003

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tension

TSB #11030636

This Service Alert supersedes the previously issued SA(s) and TSB(s) listed below: The changes are noted in Red. SA-035/24 05/31/24 DESCRIPTION There is a concern that some water pumps are being replaced that are not faulty, due to signs of

TSB #11028133

There are currently 2 methods for cutting a new auxiliary key blank. A. Auxiliary Key Trace Cut Method B. Auxiliary Key Code Cut Method 2019 and newer models require a 10-digit key code to accurately cut keys 5-digit codes CANNOT be provide

TSB #11028127

Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to be wet.

TSB #11026917

If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarke

Showing the 8 most recent of 392 technical service bulletins on file with NHTSA.

20241125Component: BACK OVER PREVENTION: SENSING SYSTEM: CAMERACrash reported

I was backing out of a parking spot while watching the backup camera when I felt a bump as if I hit something but the camera was showing I have enough space to the cars behind me. It turns out the bac

20260131Component: ENGINE

- Coolant leak at cylinder head and turbo at only 63,000 miles. - Safety issue because no warning lamps or messages appeared and potential for car to overheat without coolant circulating in the system

20260112Component: UNKNOWN OR OTHER

Mazda has a current service alert ("SA", SA-001/23) for issues with their Gen 6 Infotainment Center Display, which covers issues (e.g. ghost touch, surface peeling, spider cracks, and white dots) and

20251219Component: ELECTRICAL SYSTEM

The contact owns a 2019 Mazda CX-9. The contact stated that a State Inspection was performed on the windshield for cracks. The contact stated that while driving in the rain, the front windshield wiper

20251219Component: VISIBILITY/WIPER

The contact owns a 2019 Mazda CX-9. The contact stated that a State Inspection was performed on the windshield for cracks. The contact stated that while driving in the rain, the front windshield wiper

Showing the 5 most serious of 69 complaints filed with NHTSA.

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