2021 Mazda CX-5 Service and Repair Manual

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Covers all 2021 CX-5 trims — Carbon Edition Turbo Sport Utility 4-Door, GT Sport Utility 4-Door, GX Sport Utility 4-Door +5 more ·
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2021 Mazda CX-5 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

  • Carbon Edition Turbo Sport Utility 4-Door
  • GT Sport Utility 4-Door
  • GX Sport Utility 4-Door
  • i Grand Touring Sport Utility 4-Door
  • GS Sport Utility 4-Door
  • 100th Anniversary Edition Sport Utility 4-Door
  • I Sport Sport Utility 4-Door
  • Grand Touring Reserve Sport Utility 4-Door
  • Touring Sport Utility 4-Door
  • Carbon Edition Sport Utility 4-Door
  • Grand Touring Sport Utility 4-Door
  • Sport Sport Utility 4-Door
  • s Grand Touring Sport Utility 4-Door
  • Kuro Edition Sport Utility 4-Door
  • Signature Sport Utility 4-Door

Engines covered

  • 2.5L 2488CC 152Cu. In. l4 GAS DOHC Turbocharged
  • 2.5L 2488CC 152Cu. In. l4 GAS 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
No active recalls The 2021 Mazda CX-5 has no recalls on file with NHTSA.
TSB #11033447

This service alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-047/25 10/07/25 DESCRIPTION When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to

TSB #11032106

Valve Stem Seals Class Action Settlement Program for Excessive Oil Consumption and Oil Consumption Powertrain Warranty Extension Special Service Program SSPD5. Updated April 28, 2026 Related oil part number for warranty claims is now 0000-7

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 #11032102

This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8

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 #11032100

This Service Alert supersedes the previously issued SAs and bulletin(s) listed below: The changes are noted below in red. SA-010/23 02/09/23 DESCRIPTION Some customers may experience one or more electrical malfunctions after a vehicle body

TSB #11032019

This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-003/22 03/02/22 DESCRIPTION Some customers may complain about a tapping or knocking noise coming from the rear seat after fuel

Showing the 8 most recent of 484 technical service bulletins on file with NHTSA.

20240903Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKINGCrash reported2 injured

2021 Mazda CX-5. On 8/6/24, I turned right into a parking space between 2 parked vehicles at the DMV parking lot. I turned right and eased into the parking space facing a large Ford F 150 white picku

20240903Component: FORWARD COLLISION AVOIDANCE: WARNINGSCrash reported2 injured

2021 Mazda CX-5. On 8/6/24, I turned right into a parking space between 2 parked vehicles at the DMV parking lot. I turned right and eased into the parking space facing a large Ford F 150 white picku

20240903Component: UNKNOWN OR OTHERCrash reported2 injured

2021 Mazda CX-5. On 8/6/24, I turned right into a parking space between 2 parked vehicles at the DMV parking lot. I turned right and eased into the parking space facing a large Ford F 150 white picku

20220427Component: SERVICE BRAKESCrash reported2 injured

On April 16, 2022, around 6:45PM, I drove my new Mazda CX5 (@ 3500 miles) into our church parking lot and turned right down the first row of cars. It was light out and the weather was pleasant. I tu

20220427Component: VEHICLE SPEED CONTROLCrash reported2 injured

On April 16, 2022, around 6:45PM, I drove my new Mazda CX5 (@ 3500 miles) into our church parking lot and turned right down the first row of cars. It was light out and the weather was pleasant. I tu

Showing the 5 most serious of 186 complaints filed with NHTSA.

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