2009 Mazda MAZDA6 electrical system problems
32 owner complaints filed with NHTSA name the electrical system on the 2009 Mazda MAZDA6 — 8% of all complaints for this model year.
What owners report
“The sensors on my alarm system will randomly activate, with alarm going off at 30 second intervals. The problem began approximately 6 months ago. I took the initiative to replace my cars battery, along with the battery in my fab. I really thought that solved my problem, as a first step fix. I began…”
filed Aug 30, 2024
“The driver's side low beam headlight wiring harness melts and seems to be continuing problem. Even after replacing stock, (which melted,) with a better wiring harness it still began to melt and loose circuit, but like I said it was doing this before ever being replaced. Happens every couple months…”
filed Nov 23, 2021
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 MAZDA6 years
| Year | Reports | Share |
|---|---|---|
| 2018 MAZDA6 | 4 | 7% |
| 2017 MAZDA6 | 19 | 32% |
| 2016 MAZDA6 | 11 | 14% |
| 2015 MAZDA6 | 6 | 10% |
| 2014 MAZDA6 | 47 | 34% |
| 2013 MAZDA6 | 1 | 5% |
| 2012 MAZDA6 | 12 | 12% |
| 2011 MAZDA6 | 8 | 6% |
| 2010 MAZDA6 | 14 | 6% |
| 2008 MAZDA6 | 5 | 5% |
| 2007 MAZDA6 | 11 | 7% |
| 2006 MAZDA6 | 11 | 6% |
Other reported problem areas on the 2009 Mazda MAZDA6
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.