Electrical System Related Problems of the 2009 Mazda CX-7

Table 1 shows two common electrical system related problems of the 2009 Mazda CX-7.

Table 1. Electrical System related problems of Mazda CX-7

Problem Category Number of Problems
Alternator/generator/regulator problems
1
Electrical System problems
1

Alternator/generator/regulator problem #1

My complaint; in 3/18/2010 at 2:00pm while I was driving the radio display blanked out and the radio stopped working all together. Traction control system (tcs) was blinking and the electronic stability control stayed on. Gauge needles were bouncing. I stopped the vehicle and turned it on and off three times then everything came back on. Then later in the day 3/18/2010 at 7:00 pm the radio display and the radio stopped working all together. This time I just kept pressing the on and off button a couple times this did not work but then the radio just came on by itself while I was driving. I took the car to the dealer on 3/19/2010 the results as the dealer notice says: unable to duplicate. Could not find any poor connections to have caused the problem. During test drive. Normal operation observed. Pulled codes, two were found for high voltage. No freeze data available. Called tech-line and no known issues for these symptoms or codes. Suggest inspection of pcm/bcm/fuse block connections and alternator. Inspect alternator, normal output, at 14v. All connections good. No corrosion found. No leaks found in the driver kick panel , or loose connections. Normal operation and condition at this time.

Electrical System problem #2

Tl- the contact owns a 2009 Mazda Cx-7. The contact stated that the vehicle's the front driver side and both rear-window do not properly move upward and downward. The tire pressure monitor light was illuminated despite having the tires checked and following the instructions provided to have the light go off, it remained illuminated. The vehicle's check engine light was illuminated. The contact took the vehicle to a certified mechanic cleared the code for the check engine light, however, the contact stated that shortly after while driving approximately 55 mph the vehicle suddenly decelorated to about 20 mph and loss all power. The vehicle was able to pull to drift over to the side of the road and turn the vehicle back on. The contact returned the vehicle to the certified mechanic who diagnosed that the mass airflow center and oxygen center tank had failed and needed to be replaced. The vehicle had not been repaired. The manufacturer was not made aware of the issues. The approximate failure mileage 96,800. Gl.


Electrical System related problems in other Mazda CX-7 model year vehicles:



Safety Ratings of CX-7 Cars
Fuel Economy of CX-7 Vehicles
CX-7 Service Bulletins