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2021 Mazda CX-30 Service and Repair Manual
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$49.99 USD
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Covers all 2021 CX-30 trims — 2.5 Turbo Sport Utility 4-Door, 2.5 S Sport Utility 4-Door, GT Sport Utility 4-Door +4 more ·
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2021 Mazda CX-30 Service and Repair Manual
Regular price
$49.99 USD
Unit price
2021 Mazda CX-30 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
- 2.5 Turbo Sport Utility 4-Door
- 2.5 S 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
- I Sport 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
- 2.0L 1998CC 122Cu. 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
Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.
Consequence
A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increas
Remedy
Mazda will notify owners, and dealers will replace all four tire air valves with new parts, free of
Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles. When fully opened, the power liftgate may partially lower unexpectedly when the vehicle is parked facing uphill
Consequence
If the power liftgate unexpectedly lowers while a person is accessing the rear storage area of the v
Remedy
Mazda will notify owners, and dealers will update the power liftgate control module software and ins
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
This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-011/25 10/16/25 and 02/27/25 DESCRIPTION Some customers will report that their fuel door (AKA, fuel filler door, fuel lid, and fuel-filler lid) wa
DESCRIPTION Some customers may complain that the seat warmer does not operate when turning the ignition on while the seat is warm but when turning the ignition off then on again, the seat warmer begins to operate appropriately. DTCs B1030:1
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
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
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
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
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
Showing the 8 most recent of 596 technical service bulletins on file with NHTSA.
The contact owned a 2021 Mazda CX-30. The contact stated that her husband was driving 60 mph on cruise control and while approaching a traffic light he depressed the brake pedal but failed to deactiva
Involved in an accident low speed on 3/17/23. Upon impact with other car passengers seat belt did not activate until passenger hit dash with her head and then it apparently engaged and threw passenger
I was involved in a traffic accident on 6/29/23 involving myself and my [xx] year old son, both in the front seat. We were struck in the back by one vehicle, spun out of control, hit another vehicle o
The contact owned 2021 Mazda CX-30. The contact stated while attempting to park the vehicle in the parking garage at her workplace, the contact reversed and then straightened the steering wheel; howev
The contact owned 2021 Mazda CX-30. The contact stated while attempting to park the vehicle in the parking garage at her workplace, the contact reversed and then straightened the steering wheel; howev
Showing the 5 most serious of 130 complaints filed with NHTSA.