Ever noticed your Mazda CX-5 making strange noises when shifting gears? Or maybe you’ve experienced unexpected lurching at low speeds? You’re not the only one facing these issues. Mazda CX-5 transmission problems have become common enough to trigger official recalls and numerous technical service bulletins. This guide will break down everything you need to know about these transmission troubles and what you can do if your vehicle is affected.
Major Mazda CX-5 Transmission Recalls Explained
The Critical PCM Software Recall
In June 2019, Mazda issued a major recall (NHTSA Campaign Number 19V497000) affecting approximately 262,220 vehicles, including 2018-2019 CX-5 models. This wasn’t just a minor glitch—it was a potentially dangerous software error in the powertrain control module.
The problem occurs when the engine switches from cylinder deactivation to full activation while driving. When this happens, an intake valve rocker arm can become displaced and contact internal engine components. The result? Engine misfires, power loss, check engine lights, and in worst cases, complete engine stalling while you’re driving—a serious safety risk recognized by auto safety regulators.
If your CX-5 falls within this production range, dealers will reprogram the PCM with enhanced software free of charge under recall campaign number 3719F.
Common Transmission Problems in CX-5 Models
The Notorious Torque Converter Chirp
Does your CX-5 make a chirping noise during the 3-4 gear upshift? This widespread issue prompted Mazda to issue Technical Service Bulletin 05-005/23, most recently updated in November 2023. This problem primarily affects 2017-2024 CX-5 vehicles with 2.5L engines featuring cylinder deactivation.
The chirp comes from excessive wearing of the lockup clutch in the torque converter. As it wears, iron powder contaminates the transmission fluid, disrupting smooth operation during shifts. According to the official TSB documentation, the repair is extensive:
- Complete transmission removal
- New torque converter installation
- Three complete ATF flushes
- Multiple relearning procedures
For qualifying vehicles, this repair is covered under Mazda’s Powertrain Limited Warranty. The labor time ranges from 7.3 hours for 2WD models to 10.0 hours for 4WD versions—a substantial repair by any standard.
Low-Speed Surging Issues
Another common complaint is surging at low speeds. TSB 05-002/20 addresses this issue in 2018-2020 CX-5 models with cylinder deactivation. Owners describe a longitudinal surging feeling (about 2 cycles per second) when driving slowly in locked-up 1st gear.
The problem stems from torque fluctuation and torsional resonance within the torque converter. The fix involves reprogramming the PCM with modified software that reduces torque fluctuation. According to the technical bulletin, dealers use the Mazda Modular Diagnostic System with specific software to perform this update.
Transmission Control Module Failures
Perhaps the most costly transmission issue affecting CX-5 owners is Transmission Control Module (TCM) failure. These failures appear in both earlier generation vehicles and some recent models.
Warning Signs of TCM Failure
| Warning Sign | What It Means |
|---|---|
| Harsh or unpredictable shifting | TCM can’t properly control gear changes |
| Check engine light | Often accompanied by codes U0100 or U0101 |
| Automatic transmission warning light | System has detected transmission irregularities |
| Inability to shift gears | Complete failure of transmission control |
| Vehicle stuck in limp mode | Safety protocol limiting functionality |
TCM failures typically stem from three main issues:
- Poor heat dissipation design trapping heat within the module
- Weak solder connections that fail under heat cycling
- Poor mounting location directly on the transmission exposing the TCM to excessive heat
Replacing a TCM can cost between $2,000-$5,000—a significant expense for any owner. Some specialists now offer rebuilt units with improved thermal management for better long-term reliability, as detailed by Circuit Board Medics, who specialize in these repairs.
Recent Model Years: New Cars, Same Problems
You might think newer CX-5 models would be free from these issues, but unfortunately, that’s not the case. Multiple owners of 2024 and 2025 CX-5s have reported significant problems within the first few hundred miles of ownership.
One owner shared on Reddit that their 2024 CX-5 required a complete transmission replacement after just 20 days of ownership. Another described severe lurching during stop-and-go traffic, particularly at speeds below 20 mph.
Adding to the frustration, many dealers report significant delays in obtaining replacement transmissions and TCMs. Some repairs are taking 4+ months to complete due to parts shortages from Japan. This has left many new CX-5 owners with vehicles they can’t drive or facing extended periods with loaner cars.
Extended Warranties and Legal Action
Warranty Extensions
Mazda has implemented several Special Service Programs to address chronic issues:
- SSPD8 Warranty Extension: Extends coverage for check engine lights with DTC P0126:00 (thermostat issues) to 15 years/150,000 miles for 2018-2025 CX-5 vehicles
- Powertrain Warranty Extensions: For 2021-2022 turbo engines affected by valve stem seal defects, warranty coverage extends to 84 months/84,000 miles
Class Action Litigation
A class action lawsuit filed in 2024 alleges that Mazda knowingly sold vehicles with defective SKYACTIV-G 2.5T engines that cause coolant leaks and engine failures. This lawsuit affects 2019-2024 CX-5 vehicles among other models, as reported by Top Class Actions.
While not transmission-related, another class action settlement provides up to $1,750 reimbursement for Mazda Connect system issues in 2016-2020 CX-5 vehicles, demonstrating a pattern of addressing defects through litigation rather than proactive recalls.
Dealing With Dealer Resistance
Many owners report that Mazda dealers can be reluctant to apply available TSBs, particularly for transmission control module updates. Common resistance tactics include:
- Claiming inability to “verify” intermittent problems
- Refusing to perform software updates without reproducing specific symptoms
- Inconsistent application of warranty coverage for known issues
If you’re facing dealer pushback, experts recommend:
- Document issues with video evidence when they occur
- Request specific TSB numbers when scheduling service
- Escalate to Mazda corporate customer service (1-800-222-5500) when dealers refuse to perform available repairs
What CX-5 Owners Should Do Now
Check If Your Vehicle Is Affected
First, verify if your CX-5 is subject to any open recalls:
- Visit NHTSA.gov or SaferCar.gov
- Enter your 17-digit Vehicle Identification Number (VIN)
- Review any open recalls listed for your vehicle
You can also check directly on Mazda’s recall information website or by calling Mazda customer service.
Know The Warning Signs
Be alert for these early symptoms of transmission problems:
| Warning Sign | Possible Cause | Action Needed |
|---|---|---|
| Chirping noise during 3-4 upshift | Torque converter wear | Request TSB 05-005/23 service |
| Surging at low speeds | Torque fluctuation issues | Request TSB 05-002/20 service |
| Harsh or unpredictable shifting | Potential TCM failure | Document with video and contact dealer |
| Check engine light | Multiple possible causes | Get diagnostic codes read immediately |
| Transmission warning light | System detecting abnormalities | Have vehicle inspected promptly |
Advocate For Yourself
When dealing with transmission issues, you need to be your own advocate:
- Document everything: Keep records of all symptoms, when they occur, and service visits
- Know your rights: Research applicable TSBs and warranty coverage before dealer visits
- Get it in writing: Request detailed documentation of any diagnosis and repair recommendations
- Escalate when necessary: If a dealer dismisses legitimate concerns, contact Mazda corporate
Maintenance Matters
While many CX-5 transmission issues stem from design or manufacturing problems, proper maintenance remains important:
- Follow Mazda’s recommended transmission fluid change intervals
- Address any transmission-related warning lights promptly
- Consider extended warranty coverage for vehicles approaching standard warranty expiration
What Prospective CX-5 Buyers Should Know
If you’re considering purchasing a Mazda CX-5, here’s what you should watch for:
High-Risk Model Years
- 2017-2024 CX-5s with cylinder deactivation (VIN 8th digit “M”) have the highest concentration of transmission issues
- 2018-2019 models are subject to the official PCM recall
- 2024-2025 models are experiencing early transmission failures requiring complete replacement
Pre-Purchase Checklist
Before buying a CX-5, take these precautions:
- Verify all recalls have been completed using the VIN
- Request service records showing any TSB applications
- Test drive specifically for low-speed lurching and chirping noises during upshifts
- Check for smooth cold-start operation and consistent shifting
- Research the specific production date and engine type
The Future of CX-5 Transmission Reliability
Mazda appears to be addressing some issues through software updates and extended warranty programs. However, the persistence of problems in newer models suggests fundamental design challenges may remain unresolved.
For owners experiencing symptoms, acting quickly remains the best approach. Document issues thoroughly, reference specific TSB numbers, and don’t hesitate to escalate to Mazda corporate when necessary. The combination of parts supply constraints and dealer service challenges means that getting transmission issues addressed can require persistence, but most repairs should be covered under standard or extended warranty terms.
By staying informed and proactive, CX-5 owners can navigate these transmission challenges while still enjoying the many positive aspects of their vehicles.
