2016 Mazda CX-9 electrical system problems
14 owner complaints filed with NHTSA name the electrical system on the 2016 Mazda CX-9 — 14% of all complaints for this model year.
What owners report
“Smart City Break Malfunction warning light appears while driving. Simultaneously the tire pressure warning appears. Also, at the same time, the temperature reads -20 to -40 degrees. Yes, vehicle is available for inspection. Fearful that car could randomly break while driving putting myself and…”
filed Apr 23, 2025
“Vehicle failed to turn off the engine while in park and I was unable to lock vehicle while engine was still running. The ignition button failed to work.”
filed Oct 24, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
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…
SA-061-25 · Service Bulletin/Repair Instructions · issued Dec 17, 2025
Electrical System problems in other CX-9 years
| Year | Reports | Share |
|---|---|---|
| 2021 CX-9 | 1 | 3% |
| 2020 CX-9 | 4 | 21% |
| 2019 CX-9 | 7 | 13% |
| 2018 CX-9 | 15 | 12% |
| 2017 CX-9 | 2 | 3% |
| 2015 CX-9 | 1 | 3% |
| 2014 CX-9 | 2 | 4% |
| 2013 CX-9 | 1 | 1% |
| 2012 CX-9 | 5 | 2% |
| 2011 CX-9 | 5 | 3% |
| 2010 CX-9 | 6 | 3% |
| 2008 CX-9 | 13 | 8% |
Other reported problem areas on the 2016 Mazda CX-9
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.