2009 INFINITI G37 Powertrain (other) Problems

I was driving at about 65 mph on the tail end of a roughly 2 hour trip. The car shut off on me completely. Fortunately there weren't many cars on the road, so I was able to force the steering wheel - since power steering went out as well, I needed to turn the wheel forcefully - to the shoulder. The brakes worked ok, but not well, again because the engine shut off, so I was forcing the brakes and they took a lot longer to work than normally. Had there been normal to heavy traffic, I'd definitely have been in a very bad crash. The vehicle is available for inspection if needed. This is the second time this situation has occurred to me in this vehicle. There was no warning lamp, message, or symptom prior to or after the incident. A dealer, manufacturer, police, insurance, nor anyone else has inspected or reproduced the problem. Various Infiniti online forums reference the same issue.

NHTSA ID

11496986

Incident

Oct 1, 2022

MY CAR WAS SLOWING DOWN AND JERKED IN AND OUT OF FIRST GEAR IVE BEEN HAVING THIS PROBLEM FOR MOTNTHS I LOOKED ON INFINITI FORUM AND SEEN ITB12-027D AND INFINITI WILL NOT FIX MY CAR I ALMOST HIT SOMEONE CAR DUE TO THE CAR DRIVING REALLY WEIRD ! AND SWERVED AND HIT A CURB INSTEAD THIS IS RIDICULOUS IM ALSO REPORTING THIS TO THE BBB AS WELL BECAUSE PLENTY OF PEOPLE ARE REPORTING THIS AS AN ISSUE WITH THIS YEARS TRANSMISSION AND ENGINE AND THEY ARENT DOING ANYTHING TO FIX IT BUT THROW PRICES AT THEIR CUSTOMERS FOR THE TO FIX TEHE PROBLEM THEMSELVES

NHTSA ID

11438502

Incident

Oct 6, 2021

BETWEEN 40-50 MPH, ON A BUSY RURAL HIGHWAY, THE CAR WOULD OCCASIONALLY (ONCE IN 3 MONTHS) GO INTO LIMP MODE. THIS PROBLEM IS NOW OCCURRING WEEKLY! YOU CANNOT ACCELERATE MORE 2,000 RPMS WHEN THIS HAPPENS. YOU CAN MANUALLY SHIFT THE TRANSMISSION TO A HIGHER GEAR TO GET TO A SAFE SPOT TO PULL OVER. HOWEVER, IT FEELS LIKE THE TRANSMISSION MIGHT FALL OUT OF THE CAR WHEN SHIFTING. MOST OF THE TIME, WHEN YOU CUT THE CAR OFF AND RESTART IT, IT RUNS AS NORMAL. IT'S LIKE THE COMPUTER RESETS. AS OF LATE, I HAVE TO CUT THE CAR OFF AND RESTART TWICE. THIS IS BEGINNING TO HAPPEN MORE FREQUENTLY, LIKE ONCE OR TWICE A WEEK. WE HAVE CONSULTED WITH A DEALER, AND HAVE TRIED SEVERAL RECOMMENDATIONS. WE HAVE NEW AIR FILTERS AND MAS AIR SENSORS. THIS DID NOT CORRECT THE PROBLEM. AFTER FURTHER INVESTIGATION, WE FOUND A DEALERSHIP WHO ADMITTED THAT THEY HAVE SEEN OR HEARD OF THIS PROBLEM. THE SERVICE ADVISOR SAID THAT THIS COULD BE A TRANSMISSION ISSUE. WE HAVE AN APPOINTMENT ON 12-13-2019 WITH THIS DEALERSHIP.

NHTSA ID

11287620

Incident

Oct 2, 2019

Mileage

160,000 mi

INFINITI NEEDS TO RECALL THE TIMING CHAIN GALLEY GASKETS. MY 2009 G37XS SEDAN RECENTLY BLEW THE GALLEY GASKETS AND IT SEEMS AS IF THIS IS A COMMON PROBLEM AND IS A VERY EXPENSIVE FIX. RECALL THIS ISSUE PLEASE I ALWAYS USE 93 GAS. ALWAYS USE MOBIL 1 FULL SYNTHETIC OIL, AND ALWAYS DO ALL MAINTENANCE ON THE CAR ON TIME. I'M SHOCKED AND AGGRAVATED THAT THIS ISSUE HAPPENED AND INFINITI DID NOT RECALL IT.

NHTSA ID

11243680

Incident

Aug 1, 2019

Mileage

117,000 mi

I WAS ON THE HIGHWAY TRAVELING ABOUT 60-65 MPH AND A TRUCK MERGED, I SLOWED THEN DECIDED TO PASS AS IT WAS A LARGER TYPE TRUCK AND SLOW TO MERGE, WHEN I STEPPED ON THE GAS...NOTHING HAPPENED. THE VEHICLE SEEMED TO HAVE GONE INTO NEUTRAL LIKE SPACE AND I HAD NO GEAR AND I WAS HALF IN THE PASSING LANE. I HAVE AN AUTOMATIC TRANSMISSION. I TOOK MY FOOT OFF THE GAS AND IT FINALLY APPEARED TO CATCH, BUT I THOUGHT I WAS GOING TO CRASH. I DID HAVE SHIFT AND LAG ISSUES AND JUST GOT A TCM UPDATE 05/25/2019 WHICH APPEARS TO HAVE SOLVED THE OTHER PROBLEMS, BUT I AM AFRAID TO PASS ON THE HIGHWAY BECAUSE I AM NOT SURE IF THIS ISSUE WAS THE SAME AS THE LAGGING AT LOWER SPEEDS AND ROUGH DOWNSHIFTING.

NHTSA ID

11210845

Incident

May 19, 2019

Mileage

74,800 mi

I WAS COMING OUT FROM THE FREEWAY AT THE TRAFFIC LIGHT THE CAR COMPLETELY SHUTDOWN, AND IT WILL NOT START. FIRST I CALLED FOR AAA TO TOW IT, ONCE HE CAME THE DRIVER CHECKED THE BATTERY AND HE TOLD ME THE BATTERY WAS FINE, THEN HE TOLD ME THE ENGINE IS GONE. AND THEN I CALLED THE DEALER TO CHECK IF THIS IS A RECALL, OR ANYTHING AND I WAS TOLD THE POWER TRAIN WAS EXPIRED. I HAVE NO INDICATION OF ANY HEATING, OR ANY ENGINE LIGHTS, EVERYTHING WAS WORKING FINE. I DO THE MAINTENANCE AS RECOMMENDED BY INFINITY BOOK. THE THIS VEHICLE HAS LOW MILEAGE 2009 YEAR MADE AND I DON'T DRIVE MUCH. I SEARCHED ONLINE AND THERE ARE SO MANY PEOPLE SUFFER EXACTLY LIKE ME.

NHTSA ID

10732644

Incident

Jul 7, 2015

Mileage

59,723 mi

CAR BUCK AND STOP ACCELERATE. THEN WILL NOT GO IN TO LOW GEARS OR SIX GEAR. *TR

NHTSA ID

10628511

Incident

Jul 2, 2013

Mileage

117,000 mi

ON A COLD SNOWY EVENING WHILE DRIVING ON THE HIGHWAY AT ABOUT 60MPH THE CAR BEGAN TO VIOLENTLY SHAKE, WHEN I TOOK MY FOOT OFF THE GAS PEDAL THE CAR STOPPED SHAKING, WHEN I TRIED TO ACCELERATE THE CAR AGAIN BEGAN TO SHAKE VIOLENTLY. FORTUNATELY I WAS ABOUT 5 MILES AWAY FROM MY DESTINATION AND MANAGED TO DRIVE ABOUT 25 ON A HIGHWAY. AFTER I REACHED MY DESTINATION I POWERED OFF THE CAR AND LET IT SIT FOR ABOUT 5 MINUTES, THEN I POWERED IT ON AGAIN AND TRIED TO ACCELERATE ABOVE 30MPH WHICH CAUSED THE CAR TO SHAKE AGAIN. I ENDED UP GETTING THE CAR TOWED TO THE DEALERSHIP, WHEN I GOT A CALL BACK FROM THE DEALERSHIP THE NEXT DAY, THE MECHANIC SAID THAT THE PROBLEM WAS DUE TO A SOFTWARE ISSUE WITH THE CAR. DURING THE COLD WEATHER THE AIR INTAKE WAS NOT TAKING IN AIR CORRECTLY WHICH WAS CAUSING THE ENGINE TO MISFIRE. I WAS A BIT SKEPTICAL ABOUT WHAT HAPPENED BUT SINCE THEN I HAVE NOT HAD THE ISSUE OCCUR AGAIN. INFINITI SHOULD MAKE THIS INFORMATION KNOWN TO OWNERS EITHER THROUGH A RECALL OR UPDATE THE SOFTWARE DURING ROUTINE MAINTENANCE. *TR

NHTSA ID

10626583

Incident

Jan 4, 2014

Mileage

28,000 mi

2009 INFINITI G37. CONSUMER WRITES IN REGARDS TO VEHICLE TRANSFER CASE PROBLEMS. *SMD THE CONSUMER STATED FOR THE SECOND TIME IN ONE YEAR, A PROBLEM DEVELOPED WITH THE TRANSFER CASE. THE DEALERSHIP INDICATED, THEY DID NOT KNOW HOW THE PROBLEM DEVELOPED, OR WHY IT OCCURRED AGAIN. THE CONSUMER WAS INFORMED THE PARTS WERE NOT AVAILABLE IN THE US AND WOULDN'T BECOME AVAILABLE UNTIL MID OCTOBER.

NHTSA ID

10550208

Incident

Oct 1, 2013

APPARENTLY ON 2009 INFINITI G37S, THERE IS A PROGRAMMING ERROR/DEFICIENCY IN THE ELECTRONIC ENGINE CONTROL MODULE (ECM) AFFECTING THE PROCESSING OF THE MASS FLOW RATE SENSOR THAT WILL CAUSE THE ENGINE TO UNEXPECTEDLY (AND WITHOUT A DASH WARNING INDICATOR) TO LOSE POWER. AT OCCURRENCE OF THE FAILURE, THE CAR WILL DECELERATE FROM HIGHWAY SPEED TO LESS THAN 35 MPH WITHIN A FEW SECONDS. FOLLOWING THE FAILURE, THE ENGINE RPM WILL NOT EXCEED 2,400 RPM AND SPEEDS ABOVE 35 MPH ARE IMPOSSIBLE (I FOUND THAT 4TH GEAR IS THE HIGHEST GEAR SELECTABLE). THIS FAILURE CAN BE DANGEROUS IN A NUMBER OF TRAFFIC SITUATIONS. I HAVE LEARNED FROM AN INFINITI SERVICE DEPT. THAT THE FAILURE WILL TEMPORARILY CORRECT ITSELF IF THE ENGINE IS TURNED OFF FOR A PERIOD OF TIME, BUT THAT THE FAILURE COULD REOCCUR. THE CAR'S ECM WAS RE-PROGRAMMED BY TOWBIN INFINITI (LAS VEGAS, NV) ON AUGUST 30 AND THAT SUPPOSEDLY FIXES THE FAILURE. WHILE AT TOWBIN, THE SERVICE MAN SAID THAT INFINITI KNOWS OF THE PROBLEM, BUT IS WAITING TO SEE HOW WIDE-SPREAD THE PROBLEM IS. OWNERS HAVE NOT BEEN TOLD OF THIS PROBLEM. TOWBIN SERVICE SAID THEY HAVE SEEN ABOUT 300 CASES OF THE PROBLEM. A SALT LAKE CITY DEALER SERVICE DEPT. HAD ALSO HEARD OF THIS PROBLEM. AGAIN, I FEEL THIS PROBLEM CAN BE DANGEROUS, BECAUSE: IF IT WERE TO OCCUR IN HEAVY TRAFFIC, IT MAY BE DIFFICULT TO GET OUT OF THE WAY OF OTHERS; IF IT WERE TO OCCUR WHEN TURNING IN FRONT OF ONCOMING TRAFFIC; AFTER IT OCCURS, THERE IS NO WAY TO KEEP UP WITH HIGHER SPEED TRAFFIC - ONE IS LEFT GOING SLOW AND HOPING NO ONE REAR ENDS ME; WITHOUT MORE INFORMATION, I HAVE NO WAY OF KNOWING IF THE PROBLEM HAS REALLY BEEN FIXED. *TR

NHTSA ID

10353377

Incident

Aug 24, 2010

Mileage

10,200 mi

I OWN A TWO-MONTH OLD INFINITI G37X. WHEN BRAKING AT HIGHWAY SPEED, THE ENGINE DOES NOT SEEM TO SLOW DOWN AS FAST AS IT SHOULD. I BROUGHT THIS TO MY INFINITI DEALER THIS WEEK. THEY CONDUCTED TESTS ON IT AND FOUND THAT IT "PERFORMS AS DESIGNED." HOWEVER, THEY ACKNOWLEDGED THAT THE TRANSMISSION DOES NOT SLOW DOWN WHEN THE BRAKE IS APPLIED - THAT THE ENGINE IS DESIGNED TO "CLICK DOWN" FROM GEAR TO GEAR. BUT WHEN BRAKING HARD AT A HIGHWAY SPEED, THE CAR DOES NOT SLOW DOWN IMMEDIATELY BECAUSE OF THIS DESIGN. I'VE BEEN DRIVING FOR 33 YEARS AND HAVE NEVER BEFORE FELT LIKE THE CAR WAS NOT GOING TO STOP WHEN IT NEEDED TO. THIS CAR GIVES ME THAT FEELING. I'VE HAD TO STOP QUICKLY A COUPLE OF TIMES ON THE HIGHWAY AND I DID NOT FEEL AS THOUGH I WAS IN CONTROL OF THE CAR. INFINITI'S TESTS SEEM TO CONFIRM THIS. HOWEVER, THEY DID NOT OFFER ANY SORT OF REPAIR BECAUSE, AGAIN, THE CAR IS REACTING AS DESIGNED. THEY DID SAY THAT A SOFTWARE CORRECTION MIGHT OCCUR IN THE FUTURE BECAUSE CORPORATE INFINITI IS AWARE OF THIS PROBLEM. *TR

NHTSA ID

10312291

Incident

Feb 3, 2010

Mileage

4,100 mi