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 ↗2015 Mazda Mazda3 electrical problems
moderate Owners of the 2015 Mazda Mazda3 have filed 22 NHTSA complaints about the electrical, typically surfacing around 27,000 miles at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Failure mileage
Complaints
22
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2011 Mazda3 | 13 |
| 2012 Mazda3 | 20 |
| 2013 Mazda3 | 24 |
| 2014 Mazda3 | 25 |
| 2015 Mazda3 (this page) | 22 |
| 2016 Mazda3 | 20 |
| 2017 Mazda3 | 19 |
| 2018 Mazda3 | 28 |
| 2019 Mazda3 | 8 |
1crash
When does it fail?
Of the 22 electrical complaints filed for the 2015 Mazda Mazda3, 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 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 ↗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.
The failure pattern owners describe
Owners of 2015 Mazda 3s report two dominant electrical failure patterns: premature ignition coil failure and persistent infotainment system malfunctions.
Engine coils failed at 43,000 miles—well below the 150,000–200,000 mile lifespan typical for Mazda 3s. The failure caused sudden power loss at highway speed; Mazda's TSB 01-014/16 addressed the issue, but Mazda did not proactively notify owners. Customers had to complain during the warranty period to get repair coverage; parts replaced were all four coils and spark plugs.
The infotainment touchscreen exhibits chronic "ghost touch" behavior: it changes radio stations, switches navigation screens, dials phone numbers, and makes calls on its own during normal driving, especially in stop-and-go traffic. The connectivity master unit (CMU) also fails, trapping the system in endless reboot loops that knock out navigation, Bluetooth hands-free calling, and backup camera function—sometimes permanently. Reboot loops worsen in cold weather (below 50°F) and appear temperature-sensitive. Mazda acknowledges these as known defects but does not cover repairs under warranty. Replacement costs $700–$1,500. Owners also reported one case of sudden unintended acceleration in a parking lot, one complete electrical shutdown affecting brake system and starter, and battery terminal corrosion preventing starting—all rare but safety-critical failures in this sample.
Same Mazda Mazda3 electrical reports on nearby years: 2013 · 2014 · 2016 · 2017 · 2018
Failure modes owners describe
Ignition coil failure
Engine coils failed prematurely at low mileage. Owner reported TBS 01-014/16 issued by Mazda; dealer found coils defective by lot number and replaced all four along with spark plugs. Mazda was aware of the issue by January 2016 and updated the bulletin in July 2016 to include this vehicle model. Owner alleges Mazda did not notify customers proactively, forcing owners to complain within warranty period to get coverage.
When: 43,048 miles; February 2022
Symptoms owners cite: Engine lost power while driving at 35 mph; Three warning lights illuminated; Engine struggling, able to reach only 20 mph; Sudden power loss on local road
Codes mentioned: TBS 01-014/16
Repairs/costs cited: All four engine coils replaced; all four spark plugs replaced. Dealer initially claimed parts were not under warranty.
Recalls/TSBs owners mention: Mazda TSB 01-014/16 issued; bulletin updated July 2016 to include this vehicle. No proactive customer notification mentioned.
Infotainment system ghost touch / random activation
The touchscreen infotainment system performs unintended actions (ghost touch) including changing radio stations, switching menus, making unwanted phone calls, dialing numbers, and changing settings on its own while driving. System may be triggered by motion (manual transmission gear shifts), low temperatures, or hot weather. Owners report this happens repeatedly during normal driving, especially in stop-and-go traffic. One owner suggested 5G transition as possible cause. Mazda acknowledges the issue as a known defect but does not offer warranty repair; replacement system costs approximately $1,400–$1,500 at owner expense.
When: Various; some reported in early 2019; others ongoing for 2+ years; temperature-related cases in cold (<50°F) or extremely hot weather
Symptoms owners cite: Touchscreen makes ghost selections (changing radio stations, dialing numbers, making calls); Screen changes views unprompted, especially during navigation use; Self-selecting settings and pressing buttons at random; Distraction while driving, particularly in unknown areas or during turns; Excessive distraction in stop-and-go traffic and when slowing to turn
Repairs/costs cited: Replacement of infotainment system costs $1,400–$1,500. Dealer offers swap for another system that may develop same issue. No permanent fix or software update available at some dealerships.
Recalls/TSBs owners mention: Mazda aware of issue but refuses to address under warranty. Owner alleges Mazda issued an informal notice (not a formal recall) that required owner complaint to trigger repair; no proactive notification sent. One owner mentions voluntary extended warranty offered by Mazda but was not notified of it by law.
Infotainment system reboot loop / CMU failure
The infotainment / connectivity master unit (CMU) enters a continuous reboot loop, preventing normal operation of navigation, radio, Bluetooth hands-free calling, and backup camera. System repeatedly restarts, especially in cold temperatures (below 50°F). In some cases, backup camera image jumps or goes blank; radio becomes stuck on single station; navigation unavailable. Dealer diagnostics identified this as CMU failure. One owner reports attempted software update did not resolve issue.
When: Various; cold garage temperatures below 50°F; after 4 years of ownership (one case); early 2019 (one case); 1,000 miles (one case)
Symptoms owners cite: System loops through bootup sequence repeatedly, never fully loading; Reboot occurs 3–5 times when first starting car in cold garage; Backup camera image jumps, goes blank, or becomes sporadically non-functional; Radio stuck on single station; Navigation display unavailable; Bluetooth hands-free calling non-operational; System restarts unexpectedly while driving
Codes mentioned: CMU failure
Repairs/costs cited: Dealer quoted $700–$1,000 for CMU replacement. Software update of CMU attempted by Mazda but did not resolve issue in at least one case. Dealers unable to reproduce issue or determine failure root cause in some instances.
Recalls/TSBs owners mention: Mazda suggested software update of CMU might solve problem. No formal recall issued. No proactive notification of known defect.
Infotainment touchscreen ITO film corrosion
Indium Tin Oxide (ITO) film on touchscreen may corrode due to moisture adherence during plant cleaning process, causing electrostatic capacity to vary without driver input and resulting in improper touch response or ghost touch behavior.
When: Unknown; appears to be manufacturing defect
Symptoms owners cite: Touchscreen does not accept touch commands properly; Touchscreen operates by itself (ghost touch)
Hot-weather BSM and acceleration loss with infotainment flicker
In extremely hot weather, the blind spot monitoring (BSM) OFF light illuminates repeatedly while vehicle is in motion or starting from stop. Simultaneously, infotainment display flickers in sync with BSM OFF light. Clicking sound audible from front of car (engine area). Vehicle experiences temporary loss of acceleration; engine RPM drops below 1,000 despite pedal input, causing 5-second delay in acceleration from stop or unsafe slowdown on highway.
When: Extremely hot weather (example: July 22, 2017 in St. Louis, Missouri)
Symptoms owners cite: BSM OFF light turns on repeatedly while moving or starting from stop; Infotainment display flickers in sync with BSM OFF light; Clicking sound from front of car/engine area; Temporary loss of acceleration while in motion; Engine RPM drops below 1,000 RPM despite gas pedal input when starting from stop; Car will not move/accelerate for ~5 seconds after starting from complete stop; Unsafe slowdown while on highway or merging onto highway despite gas pedal input
Brake system electrical malfunction causing complete shutdown
Electrical malfunction in brake system caused complete vehicle shutdown. Affected remote communication with starter and activated all system malfunctions.
When: Unknown
Symptoms owners cite: Vehicle completely shut down; Remote could not communicate with starter; All system malfunctions activated
Battery terminal and wiring harness corrosion
Corrosion of battery terminal and battery wiring harness prevented vehicle from starting.
When: Unknown
Symptoms owners cite: Car will not start
Push-button start failure
When pushing start button, all lights illuminated but engine did not start. Vehicle stationary in driveway.
When: Unknown
Symptoms owners cite: All lights turn on when start button pressed; Engine does not start
Sudden acceleration in parking lot
Vehicle suddenly accelerated while owner was attempting to park, striking two parked cars in front.
When: Unknown
Symptoms owners cite: Sudden unintended acceleration while parking
Synthesized from 22 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
The Mazda Connect touch screen in the center display may not accept touch commands properly or may operate by itself (ghost touch). The ITO (Indium Tin Oxide) film of the touch screen may be corroded due to moisture, which may adhere on the lens of the touch screen during the cleaning process at the plant. The corrosion may allow the electrostatic capacity to vary without any input, causing the…
When pushing start button all lights go on but car won't start. Stationary in drive way
Mazda call this “ghost touch” it happens when the screen starts to act up like crazy, jumping from different audio sources, Bluetooth lose connection, making unwanted phone calls. Almost like a ghost is touching the screen over and over again.
The "infotainment" system, which includes media, navigation, hands-free calling, and the backup camera function, frequently malfunctions. The system will either freeze, or it will execute button presses on its own. The result is that it will change audio selection, make hands free calls via the connected phone, etc. on its own with no driver interaction, which is distracting while driving and…
Had electrical trouble with your 2015 Mazda Mazda3?
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 2015 Mazda Mazda3?
It's a documented issue but not catastrophic. 22 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?
Across the 9 complaints that reported odometer mileage, most electrical failures cluster between 5,103 and 50,000 miles, with the median around 27,000. A quarter of owners report trouble before 5,103; a quarter make it past 50,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
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/2015/Mazda/Mazda3.
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.