2016 MAZDA CX-9 Engine Problems

I droved my 2016 cx-9 off highway and idled it at front of restaurant, suddenly the engine coolant overheat light came on, shut engine off and found leaking coolant on the ground near the rear of engine bay. Brought the car to Corpus Christi Mazda, found out leaks come from cylinder head crack, happens to cx-9 manufactured before June 20, 2020 according to Mazda TSB 01-013/21. I was quoted $3380 to replace the cylinder head out of pocket because the car is just out of powertrain warranty. I contacted Mazda headquarter for covering the cost out of goodwill since this is due to manufacture defects of cylinder head. Mazda refused to pay.

Cracked cylinder head due to manufacturing defect, left stranded at car wash with no engine coolant due to issue, took several months without a vehicle before it was replaced by Mazda. The vehicle has been repaired. I was left unable to drive in hot weather and could not use air conditioning while waiting for assistance. Dealer had seen the issue before, reported by many on online Mazda forums. There were no warning lamps prior to the incident happening.

Purchased the car used with 67k miles on it. Within 2 weeks of purchase warning lights went off saying that the engine was overheating due to censor malfunction. After three visits to mechanics (2 to the dealership and 1 to a private mechanic) it was determined that coolant was leaking into the engine causing the engine block to crack. This of course means that the engine will have to be replaced in order for it to be useable. That repair has been quoted by the dealership as a $14,000 repair. For a car that has less than 70k miles.

15 minutes after getting a wheel bearing replaced at the dealer, my engine coolant high temperature warning came on (never before seen). This occurred while I was on the interstate with no safe place to stop. When I was able to safely stop, I called the dealer. They said bring it back. I was unwilling to drive that far so chose the closest Mazda dealer. They informed me I have a cracked cylinder and the coolant is leaking into exhaust system. I was told the only option due to the mileage on the car (134,000) is to replace the engine for $8,000. This appears to be a known issue so I am shocked that it wasn't being checked for prior to the problem.

Cylinder head cracked, leaking coolant and causing engine overheated , potential fire hazard . Coolant also leaked and mixed in with oil cycling through engine , causing permanent damage to the engine , resulting engine to be fully replaced

Dealer diagnosed manufacturing defect that caused crack in head. {Which could lead to engine failure, and subsequent accident due to engine failure during operation.} Engine lost coolant. No overheating noted. No warning/error codes noted.

The contact owns a 2016 Mazda CX-9. The contact stated that while driving at an undisclosed speed, the air conditioning became warm and the fan was abnormally loud. Additionally, the engine temperature gauge was high. The contact pulled over and refilled the coolant reservoir. The vehicle was taken to an independent mechanic who initially diagnosed that the water pump was faulty and needed to be replaced. However, when the contact took the vehicle back to the independent mechanic for the water pump replacement, the mechanic diagnosed that the cylinder head was warped and referred her to the dealer. The vehicle was not repaired. The dealer was made aware of the failure and informed the contact that there was no recall associated with the VIN. The manufacturer was made aware of the failure and informed the contact that there was no recall associated with the VIN and referred the contact to...

11/16/18 TOWED FOR INOPERABILTY. STUCK FUEL INJECTOR/ RUINED ENGINE. ALL PANEL LIGHTS CAME ON. KEPT CAR FOR 57 DAYS. FUEL INJECTOR # 1 FAILED. WE WERE DRIVING ONTO INTERSTATE. WHILE WORKING ON CAR, EXHAUST STUD BROKE OFF INTO TURBO CHARGER HOUSING. DRILLED OUT AND RETHREADED TOOK BACK TO MAZDA DEALER TO C/O ABOUT SWOOSHING NOISE IN R DASH SAID THEY DID NOT HEAR. THIS OCCURRING WITH ACCELERATION 2/7/19 WHILE DRIVING OUT OF STATE ON INTERSTATE , SWOOSHING NOISE R DASH LOST ACCELERATION WHILE PASSING. ST PETERS , MO DEALERSHIP HAD TO PUT BACK ON THE TURBO HOSE & CLAMP 5/6/19 BACK HOME AND AGAIN HEARD THE SWOOSH NOISE ON ACCELERATION. DEALERSHIP REPLACED GASKET TO TURBO CHARGER / AIR LEAK WITH SMOKE TEST 9/14/19 AGAIN BECAME INOPERATIVE WHILE DRIVING OUT OF STATE IMMEDIATELY AFTER PASSING LARGE TRUCK, LOST ACCELERATION WITH PEDAL TO CARPET. WAS TOLD IN LIMP MODE SMELLED SOMETHING IN...

IN 2017, MY CAR SHUT OFF TWO TIMES, WITHOUT WARNING, ONE TIME AT A STOP LIGHT AND AGAIN ON THE HIGHWAY GOING 70MPH. WE WERE ACCELERATING AT THE STOP LIGHT WHEN IT SHUT OFF AND THEN DRIVING ON THE HIGHWAY. TOOK THE CAR TO THE DEALERSHIP AND 72 CODES CAME UP. THEY SAID IT WAS THE DVD PLAYERS (THAT THEY SOLD AND INSTALLED!!!) THAT WERE CAUSING THE ISSUE. THEY SUPPOSEDLY 'FIXED' THE ISSUE. NOW IN JULY 2019, THE CAR SHUT OFF AN ADDITIONAL FIVE TIMES. THREE TIMES WHILE DRIVING AND TWICE IN A PARKING LOT. WE WERE ON A HIGHWAY AGAIN WHEN THE CAR JUST SHUT OFF WITH NO WARNING, LIGHTS ON THE DASH STARTED FLASHING, AND THE POWER STEERING WENT OUT ONE OF THE TIMES. MY HUSBAND HAD TO PUT IT IN NEUTRAL, COAST TO THE SHOULDER, COME TO A COMPLETE STOP AND THEN ATTEMPT TO START IT EACH...

FAILS TO ACCELERATE AND CHANGE GEARS. THIS HAS BEEN HAPPENING SINCE WE PURCHASED THE VEHICLE. IT HAS BEEN BACK TO THE DEALERSHIP MULTIPLE TIME AND HAS NOT BEEN RESOLVED. THEY ARE UNABLE TO FIND ANYTHING WRONG. THE ENGINE IS A 2.5 L TURBO. THIS HAPPENS UNEXPECTEDLY WHILE DRIVING MAKING IT HARD TO GET ON TO THE HIGHWAY OR CHANGE LANES.

DRIVING TO WORK IN THE MORNING AT 5:45AM ON 06/05/2018 GOING 65 MPH AND MY CAR CUTS ENGINE POWER AND STARTS LOWLY DECLINING PRESSING GAS DID NOTHING AND MULTIPLE NOTIFICATIONS FLASHING SUCH AS VEHICLE SYSTEM MALFUNCTION, FORWARD SMART CITY BRAKE SUPPORT MALFUNCTION, SMART BRAKE SYSTEM MALFUNCTION. I HAD TO PULL OFF TO THE SIDE OF THE HIGHWAY I CAN'T EVEN SAY I CAN PULL OFF SAFELY BECAUSE ALL POWER WAS CUT. SO LET THE CAR SIT FOR 5 MINUTES WHILE OFF AND THEN RESTARTED AND WAS ABLE TO MAKE IT WORK. I TOOK PICTURES AS EVERYTHING WAS HAPPENING BECAUSE I KNOW THE DEALER SHIP WILL SAY SOMETHING LIKE "WELP IT AIN'T HAPPENING HERE SO YOUR CAR IS FINE." I AM VERY FORTUNATE WHEN I BOUGHT THE CAR I DECIDED TO LEASE THE VEHICLE SO I CAN JUST TAKE THE CAR BACK. THESE MALFUNCTIONS SEEM LIKE A VERY SEVERE PROBLEM AND...

THIS INCIDENT HAPPENED ON 31ST JULY, WHEN MY WIFE WAS DRIVING THIS CAR ON HIGHWAY 4 MARTINEZ, CA AT AROUND 5.00 PM WITH OUR DAUGHTER (2 YEARS OLD) RETURNING FROM DAYCARE. SHE WAS DRIVING AT APPROX 60 MILE/HR, WHEN THE CAR STARTED GIVING AUDIO VISUAL WARNINGS ON MULTIPLE FAILURES AND THE CAR STARTED SLOWING DOWN WITHOUT RESPONDING TO THE GAS PEDAL AND ENGINE PROPULSION REDUCED TO 'ZERO'. MY WIFE PANICKED AND WAS LUCKILY ABLE TO PULL OVER ON THE CURB SIDE SAFELY, EVEN THOUGH TRAFFIC WAS VERY HIGH. SHE STOPPED THE CAR AND TURNED OFF THE ENGINE AND WAITED FOR 10 MINS AND RESTARTED THE CAR MULTIPLE TIMES AND MADE SURE THAT NO MORE WARNINGS ARE DISPLAYED, BEFORE DRIVING AGAIN, HOWEVER THE 'ENGINE WARNING LIGHT' STAYED ON. AFTER A WHILE SHE DROVE HOME ALMOST 40 MILES AWAY VERY CAREFULLY WITHOUT USING ANY CRUISE CONTROL. HERE ARE THE WARNINGS, THAT CAME...

IMMEDIATELY UPON MAKING A SHARP RIGHT TURN INTO A PARKING SPOT, THE CAR SUDDENLY ACCELERATED AT A VERY FAST PACE WITHOUT ME PUSHING THE GAS PEDAL. MY IMMEDIATE REACTION WAS TO PRESS ON THE BRAKE, BUT IT DID NOT STOP. THE CAR SLAMMED INTO A PLANTER IN FRONT OF ME. THE CAR MOVED SO QUICKLY THAT IT WAS LODGED INTO THE BUSHES AND HAD TO BE PULLED OUT BY A TOW TRUCK. I IMMEDIATELY CALLED THE DEALER SERVICE DEPARTMENT AND TOLD THEM WHAT HAPPENED. THE SERVICE MANAGER'S IMMEDIATE REACTION WAS TO SCOFF AT THE IDEA THAT THE CAR ACCELERATED ON IT'S OWN. MY HUSBAND MET ME AT THE DEALER AND HAD SUBSEQUENTLY FOUND INFORMATION ABOUT A RECALL OF CX-9 MODELS FROM 2012 FOR A SIMILAR MALFUNCTION. HE SHOWED IT TO THE SAME MANAGER WHO IMMEDIATELY KNEW THE ISSUE OF THE RECALL BUT WAS QUICK TO MENTION IT WAS THE 2012...