There are 4 stored owner reports matching the electrical system leading-label group for the 2010 Mazda CX-9 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)I PURCHASED A 2010 CX9 ABOUT A MONTH AGO AND GOT PULLED OVER LAST NIGHT FOR MY DRIVER SIDE HEAD LIGHT BEING OUT, I TOOK IT TO THE SHOP AND WAS CHARGED $194 FOR THE BULB REPLACEMENT, BUT IT DID NOT WORK AND WAS CHARGED ANOTHER $130 FOR DIAGNOSTICS . THEY FOUND OUT THAT THE BALLAST HAS BLOWN OUT DUE TO CONDENSATION IN THE HEADLIGHT AND NOW THEY ARE GOING TO CHARGE ME AGAIN FOR THE BALLAST AND LABOR
VEHICLE BRAKES LIGHTING DIM WHILE COMING TO A STOP AND CAN NOT BE SEEN FROM OTHER VEHICLES APPROACHING FROM BEHIND ON THE ROAD. WHEN NOT REPLACED, STOP LIGHT WILL RUN CONTINUALLY OR NOT FUNCTION, POTENTIALLY CAUSING PREMATURE BULB FAILURE, SAFETY ISSUES AND/OR THE TRANSMISSION WILL NOT SHIFT OUT OF PARK. A FAILED STOPLIGHT SWITCH WILL PREVENT THE BRAKE LIGHT FROM ILLUMINATING WHEN THE BRAKE PEDAL IS APPLIED THAT MAY CAUSE A COLLISION AND A LIFE LOST. *TR
HAND FREE EQUIPMENT (BLUE TOOTH) STOPPED COMMUNICATION WITH MY MOBIL PHONE, DUE TO A SOFTWARE ISSUE. WHEN CONTACTING THE MAZDA DEALER AND MAZDA NORTH AMERICA CUSTOMER CARE, THEY DECLINED TO REPAIR THE DEFECTIVE PART, EVEN THOUGH MY VEHICLE IS STILL COVERED UNDER EXTENDED WARRANTY. *JS
THE AUTOMATIC DIMMER SWITCHED TO LOW LIGHT SETTING IN BROAD DAYLIGHT FOR NO APPARENT REASON RESULTING IN A DARK INSTRUMENT PANEL. DRIVER HAD TO PULL ASIDE ON A BUSY HIGHWAY TO TRY TO RESTORE DAYTIME LIGHTING. THIS IS THE SAFETY ASPECT - LOSS OF PANEL INFORMATION WHILE DRIVING CAUSING AN EMERGENCY PULL OFF AND A DISTRACTION TO THE DRIVER. THE LIGHT SENSOR CONTROLLING BOTH THE PANEL AND THE DAY/NIGHT CAR LIGHTS WAS SET TO STANDARD - DEFAULT SETTING. IT APPEARS THAT THIS SETTING IS TOO HIGH. AFTER INSISTING WITH THE DEALERSHIP, IT WAS FOUND THAT THE SENSOR IS PROGRAMMABLE. IT WAS SET THEN TO LOW, WHICH SEEMED TO HAVE FIXED THE PROBLEM. THIS STILL NEEDS TO BE ADDRESSED BY THE MANUFACTURER IN A SYSTEMIC MANNER FOR THE SAFETY OF OTHER DRIVERS.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.