The 2014 CX-9 uses Mazda's 3.7L V6 (the 3.5L ended in 2012) paired with a 6-speed automatic. While generally reliable, this generation suffers from transmission oil cooler failures that can destroy the transmission, plus some expensive internal engine issues on neglected or high-mileage examples.
Transmission Oil Cooler Failure Leading to Transmission Contamination
Common · high severity
Typical onset: 70,000-130,000 mi
Symptoms: Transmission slipping or shuddering during shifts, Milky or strawberry-colored transmission fluid (coolant mixing), Check engine light with transmission codes, Transmission overheating warnings
Fix: The internal transmission oil cooler in the radiator fails, allowing coolant and ATF to mix. This contaminates the transmission and requires full transmission replacement or rebuild, radiator replacement, and complete fluid system flush. 12-16 hours labor if catching it early; full transmission replacement if driven after contamination.
Estimated cost: $3,500-6,500
Piston Ring Failure and Excessive Oil Consumption
Occasional · high severity
Typical onset: 100,000-150,000 mi
Symptoms: Burning a quart of oil every 500-1,000 miles, Blue smoke from exhaust on startup or acceleration, Loss of power and poor fuel economy, Fouled spark plugs
Fix: The 3.7L V6 can develop piston ring issues, especially if oil changes were extended. Requires engine disassembly, new pistons and rings, honing cylinders, and often new valve stem seals. 25-35 hours labor. Some shops do short-block replacement instead at similar cost.
Estimated cost: $4,500-7,000
Lower Control Arm Ball Joint Separation
Occasional · high severity
Typical onset: 80,000-120,000 mi
Symptoms: Clunking from front suspension over bumps, Wandering or loose steering feel, Uneven tire wear on inside edge, Vehicle pulls to one side
Fix: Front lower ball joints can wear and separate (NHTSA recall 14V-345 covered some units). Even post-recall, wear is common. Ball joints are pressed into control arms; most shops replace entire control arms. 2-3 hours per side, alignment required.
Estimated cost: $600-1,200
Transmission Mounts Deteriorating
Common · low severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunk when shifting from Park to Drive or Reverse, Vibration at idle, especially with A/C on, Hesitation or jerk during acceleration, Visible torn rubber on mount inspection
Fix: The hydraulic transmission mount fails, causing excessive drivetrain movement. Relatively easy replacement but requires supporting the transmission. 1.5-2 hours labor.
Estimated cost: $250-450
Head Gasket Failure (Both Banks)
Rare · high severity
Typical onset: 120,000+ mi
Symptoms: Coolant loss with no visible leaks, White smoke from exhaust, Overheating under load, Bubbles in coolant reservoir or milky oil
Fix: Not common but when it happens, typically both banks leak externally or internally. Requires head removal, resurfacing, new gaskets, timing chains inspection. 18-24 hours labor for both sides.
Estimated cost: $3,500-5,500
Power Steering Rack Leaks
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Power steering fluid puddles under vehicle, Whining noise when turning at low speeds, Heavy steering feel, especially when cold, Low fluid warnings
Fix: Rack seals leak at the boots or internal seals fail. Requires rack replacement, fluid flush, and alignment. 3-4 hours labor.
Estimated cost: $800-1,400
Owner tips
Replace transmission fluid AND external cooler every 30,000 miles to prevent oil cooler contamination—cheap insurance against a $5K failure
Monitor oil consumption closely after 80K miles; catching ring issues early can sometimes mean a top-end job instead of full rebuild
Inspect front ball joints annually after 60K miles; play in these can lead to dangerous wheel separation
Use quality 5W-30 synthetic and keep changes at 5,000-mile intervals—this engine is sensitive to oil quality
A spacious, comfortable family hauler, but the transmission oil cooler issue is a ticking time bomb—budget $1,500 for preventive external cooler install or avoid high-mileage examples without documented fluid maintenance.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Battery located in engine bay; standard group 35 fitment
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Every control module on the 2008-2015 Mazda CX-9 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Rear cargo area, driver side trim panel behind wheel well
🔧 Autel or Launch
⚠️ Sensor calibration may be required after replacement
Rear View Camera Module (RVM)0.5 hr R&Rrelearn only +0.1 hrwith rear view camera▸ programming details
📍 Integrated with rear liftgate camera assembly
🔧 Self-relearn on ignition cycle
⚠️ Camera calibration lines may require adjustment via audio unit settings
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V717000
2018-10-12 · EA15001
Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
Additionally, unless covered in "Zone A," Mazda is recalling certain 2011-2013 Mazda6, 2011-2012 CX-7, and 2011-2015 CX-9 sold, or ever registered in the states of Arizona, Arkansas, Delaware, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia, or "Zone B."
Additionally, unless covered in Zone A or Zone B, Mazda is recalling certain 2010-2013 Mazda6, 2010-2012 CX-7, and 2010-2015 CX-9 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began November 9, 2018. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 1317F.
STEERING · 16V203000
2016-04-11
Mazda North American Operations (Mazda) is recalling certain model year 2016 CX-3 vehicles manufactured June 1, 2015, to December 2, 2015, 2013-2014 Mazda2 vehicles manufactured July 3, 2013, to August 8, 2014, 2014-2016 CX-5 vehicles manufactured January 19, 2013, to December 2, 2015, and 2013-2015 CX-9 vehicles manufactured December 6, 2012, to July 31, 2015. The lower mounting nuts and bolts that attach the front strut assembly to the steering knuckle may loosen, allowing the steering knuckle to separate.
Consequence: If the steering knuckle separates from the strut assembly, it can cause a loss of steering control, increasing the risk of a crash.
Remedy: Mazda will notify owners, and dealers will inspect the lower mounting nuts and bolts that secure the front strut assembly to the steering knuckle. If the bolts are loose, they will be replaced and then correctly tightened, free of charge. The recall is expected to begin May 20, 2016. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 9316D.
Mazda North American Operations (Mazda) is recalling certain model year 2007-2014 CX-9 vehicles manufactured October 24, 2006, to December 28, 2013. The affected vehicles have front suspension ball joints that may corrode from water leaking into the fitting.
Consequence: Over time, the ball joint corrosion may result in the front lower control arm separating from the ball joint, causing a loss of steering control and increasing the risk of a crash.
Remedy: Mazda will notify owners, and dealers will replace both the left and right lower control arms, free of charge. The recall began on September 14, 2015. The recall will begin with model year 2007-2009 vehicles registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The second phase will be for model year 2010-2014 vehicles in the same states. Finally, all remaining vehicles will be remedied. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 8515G.
Performance
Horsepower
273hp
Torque
270lb-ft
0–60 mph
7.4sec
Quarter mile
15.7sec
Top speed
130mph
Capability & size
Towing capacity
3,500lb
Payload
1,165lb
Curb weight
4,458lb
Wiper blades
First generation (TB) 2007-2015. Standard hook-type attachment for all blades.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2014 Mazda CX-9 3.5L V6 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.