Brake Disc Pads problems of the 2016 Mazda CX-5

Rear brakes are dragging causing heating and uneven wear of the rotors and pads. At 31000 the rear brake pads are completely worn and rotor show heat damage.

Driving the vehicle causes the rear brakes to get hot. This happened multiple times in September (around 40,000 miles), and I took my Cx-5 in for service. The technicians did not find anything operating incorrectly, lubricated the brakes, and returned my vehicle. When I got my state safety inspection, I was informed that my rear brakes were passable, but pretty crummy looking because of heat damage. Because we were locked down (due to coronavirus) I waited a bit and just recently had them replaced. Now that my rear brakes have new pads and rotors, the rear brake issue is happening again, specifically on the driver's side this time. After about 15 minutes of highway driving, the vehicle began to shake in the rear and the tire pressure monitor indicated that there was a problem. I took it in to the dealer again, and they told me the rear brakes are operating normally. However, on my drive home (18 miles on the highway), the rear of the vehicle began shaking again, so I knew the issue was not resolved. I checked the temperature of the driver's side rear brake rotor, and it was over 400 degrees (the other rotors were around 150, see page 9 of attached document). I contacted Mazda customer service about this issue, and they told me that because the dealer can't detect an issue, there is nothing they can do. Mazda has issued tsbs related to the electronic parking brake for my vehicle, but I believe their diagnostic steps are not sufficient to detect all cases of the issue. Their diagnostic steps are all related to low-speed driving, but my issue only presents itself after driving on the highway for a prolonged period.

Intermittently, the rear electronic parking brakes do not fully release. This causes the rear brake pads to wear on the rotors. This in turn results in premature brake wear, excessive heat, and a burning smell. This has happened multiple times in all different weather conditions.

My tire pressure indicator light was triggered on when I drove the car for about 40 mph. I stopped at a parking lot and I noticed the rear right wheel was literally smoking. Later I went to a local shop and I was told the brake was overheated on the rear right side. My local shop replaced the rotor and pads, however, the overheat problem kept showing up on that right rear side. I did some research online and it seems to be a common problem with the parking brake dragging for 2016 cx5. So I stopped using the parking brake and the overheating problem was gone. However, the parking brake is still defective and causes overheat if used.

Electric parking break (epb) warning light start blinking after the release of the brake. I lived in a warm tropical weather. In my understanding this function works on cold weather. Problem persists intermittently. If vehicle turned off, problem "disappears" but appears again when the break button was released. Weeks later the car started to activate the Smart city break alarm when moving in my neighborhood and in a city street with no reason, suddenly, and bringing a safety issue. Also started to make strange noises related to the brake, similar when the brakes or pads get wet and making the car forced to be moved when pushing the accelerator pedal, making the vehicle difficult to move, no matter break is released and turning it slow and vague. An electronic diagnostic report was made and shows the following codes : code c2005 (electric park brake motor gear unit (rh) circuit malfunction code c112a (incorrect electric parking brake motor gear unit position) code c2006 (electric parking brake motor gear unit (lh) circuit malfunction.

Excessive rear brake wear. Rear pads worn down to metal backing plate at 20,900 miles with no audible break wear indicator. Front brakes 70% worn at same milage.

My fiance started to hear a noise coming from my rear when brakes while I was driving. I also noticed that my car would rock when I took the parking brake off. I was told that my rear brake pads were worn down, the rear passenger side had slightly more wear then the the rear driver side. New pads were installed around 32,000 miles. About 8,000 miles later I started to hear the same noise again, this time it was worse. I took in again to get looked at and the rear passenger pads were completely worn down, while the rear driver pads barely had any wear to them. I was told it was most likely a malfunctioning caliber. Mazda ran my VIN and stated that is came up as a TSB but stated that I was out of warranty and that they would not cover it. I would like to report this because I am afraid that when I drive my vehicle my brakes will malfunction causing me get into an accident which may result in death.

When replacing rear drivers side rear brakes and rotor, noticed excessive wear compared to passenger side. Replaced pads and rotors on both drivers and passengers rear. Twice since the replacement, the rear brakes have stayed engaged on the drivers side, causing excessive heating, smoking, etc to the brakes, wheels, and tires. Suspect parking brake on driver side not disengaging. Have stopped using parking brake. Have not had repeat occurrance since stopped using parking brake.

Car is a 2016. 5 Mazda Cx-5 with approx 12,000 miles. Car began making a grinding sound while driving; made an appointment with Mazda to look into the problem. Dropped off the vehicle may 11, 2018, picked up the vehicle may 12, 2018. Service technician stated it was the vehicles brakes, which are not covered under warranty, and would need to be paid out of pocket. I was surprised to hear I needed new brakes due to the low mileage and age of the vehicle so I brought the car to my personal mechanic, to get a second opinion, before having any expensive repairs performed by Mazda. Local mechanic (midas shop) said that the rear brakes were entirely worn down (outer pads only) and had worn down so much, they had damaged the rear brake rotors while the rear inner pads appeared to have minimal wear consistent with the age of the vehicle. Front brakes also looked to have minimal wear consistent with the age of the vehicle. Midas recommended the rear brake pads and rotors be changed immediately for safety purposes; and commented how unusual this brake problem seemed. Upon getting home, I searched the internet and found TSB #04-005-16-3217; NHTSA #10092486 (amongst others) that tell of a similar issue. Upon going back to Mazda with the brakes and rotors that had prematurely failed and explaining the TSB's online, and requesting a refund for the money spent at the local shop; I was told there was nothing they could do. I just feel that Mazda should have replaced my brakes and rotors upon my initial visit, knowing that this appears to be a common issue in cars with low mileage.

Rear brake pads and rotors show severe wear at 14k miles. Rotors have visible wear marks and corrosion. Braking function impaired and pedal must be deeply pressed to achieve deceleration. Dealer said this is normal wear and tear and replaced pads. However even with new pads, braking is still mushy. 2015 and 2014 model years had similar problem / TSB. Appears that manufacturing defect continued into 2016 model year.

Grinding and squeaking in rear brake pads and rotors only. Car has 26,000 miles on it with visible marks on rear rotors only! noise happens while driving or braking.

Car has 6379 miles. Brakes grabbing and car jerks at times when peddle applied. Car has 20% brake pad lr 20% rr 50%rf 50% lf. Took into Mazda dealer and the solution was to replace pads. With 6379 miles driven mostly on highway is this a faulty pad product? happens at low speeds when stopping. Started 06/17 and still happening.