This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION 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. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored)
full bulletin at NHTSA ↗2019 Mazda CX-3 electrical problems
moderate Owners of the 2019 Mazda CX-3 have filed 8 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Complaints
8
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2016 CX-3 | 11 |
| 2019 CX-3 (this page) | 8 |
When does it fail?
Of the 8 electrical complaints filed for the 2019 Mazda CX-3, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
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 repair. A newly painted fender stay (2) may be causing a poor front harness (1) ground connection. The front fender stay (2) newly painted surface at ground point (3), where attachment bolt (4) is seated, may create a poor front harness ground connection. NOTE: DO NOT paint ground point (3) attachment bolt (4) is seated. NEWLY INSTALLED FRONT FENDER STAY NOTE: CAUTION: If the bolt (4) contact area (3) is painted when the front fender stay (2) is newly repl
full bulletin at NHTSA ↗If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also necessary to replace the left-side BSM control module in order to complete the radar aiming procedure. If the right-side BSM control module is replaced alone, "Automatic Configuration" and "BSM Radar Aiming" cannot be completed due to a programming error in the module. In most cases, if the left-side BSM control module is replaced alone, "Automatic Configuration" and "BSM Radar Aiming" can be completed without any problem (See CAUTION below for more details). Other possible symptoms that may be found if the right-side BSM module is replaced alone: BSM aiming fails “BSM OFF" indicator ON Center
full bulletin at NHTSA ↗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. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices.
full bulletin at NHTSA ↗For improvement of electrical diagnosis, the SKYACTIV® Wiring Terminal Test Kits has been delivered all the dealers. The terminal test kit enables you: To check pin fit drag of all PCM terminals used in SKYACTIV® vehicles and compare suspect terminal drag with a known good terminal. To measure the voltage/resistance avoiding any terminal damage.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 6 most recent
So the sport mode on cx3 have not bracket under the sport mode and if try to activeit the sport mode whole switch goes down you cant active with grabbing it will fall out of socket
The contact owns a 2019 Mazda CX3. The contact stated while turning off the vehicle, the engine did shut-off however, the interior electrical components of the vehicle such as the radio and the doors would not automatically lock intermittently. The contact took the vehicle to a local dealer who inspected the vehicle and could not duplicate the failure. The key fob battery was replaced to fix the…
A recall notice dated July 14, 2023 stated improper design of rearview camera wiring harness fastener. The fastener may become damaged from vibrations during normal vehicle use and/or while closing the lift gate. I have been told by the dealership that they do not have the parts to remedy the issue and don't know when they will have the parts. It appears that the manufacturer has failed or is…
Battery has died twice for no reason. Locks need to be unlocked manually. I have to turn on car to open other doors.
Key fob disconnects while driving. Lock/unlock does not work. Car does not start when keyfob is in vehicle. This has happened three times now, the dealership has changed my keyfobs, flashed the memory, and replaced the batteries. I've spoken to corporate customer service and was told "sometimes key fobs just disconnect. Please exit the vehicle, wait, and try again." I'm currently waiting for this…
The contact owns a 2019 Mazda CX-3. The contact stated while driving at an undisclosed speed, the vehicle lost motive power and was unable to accelerate above 20 MPH. The low oil pressure warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the electrical wiring harness, finding that the harness appeared to suffer from normal wear and tear. The vehicle…
Had electrical trouble with your 2019 Mazda CX-3?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2019 Mazda CX-3?
It's a documented issue but not catastrophic. 8 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 8 complaints filed, electrical issues most often appear around 30,133 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2019/Mazda/CX-3.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.