Infiniti Q45 Complaints

228 consumer complaints on file.

#11722201March 5, 2026
SEAT BELTS:FRONT:WEBBING:STITCHING
The contact owns a 1999 Infiniti Q45. While the vehicle was parked, the contact became aware that the driver's seat belt strap was shredding. The vehicle was taken to the dealer at the manufacturer's request. The contact was informed that the seat belt strap needed to be replaced and that the part was ordered. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact later received an email from the manufacturer stating that the parts were no longer manufactured. The contact was informed that there was no fix for the vehicle. The failure mileage was approximately 295,000. The VIN was unavailable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11415335May 5, 2021
ENGINE, POWER TRAIN, VEHICLE SPEED CONTROL
THE CIRCUIT BOARD FOR CRANK POSITION SENSOR AND CAM POSITION SENSOR HAVE IMPROPER SOLDER JOINTS. THIS HAS CAUSED THE SERVICE ENGINE LIGHT TO COME ON, THE ENGINE MAY NOT START, POWER REDUCES, ENGINE STALLS AT A TRAFFIC LIGHT OR WHILE IN MOTION, ON A CITY STREET OR HIGHWAY OR WHILE MAKING A TURN. THIS IS ALSO A COMMON PROBLEM WITH THE 2002 INFINITI M45, Q45; 2003 INFINITI I35, M45; 2003 NISSAN ALTIMA, MAXIMA, MURANO, SENTRA. THERE ARE 11 CONSUMER COMPLAINTS, 3 INVESTIGATIONS AND 33 SERVICE BULLETINS REGARDING THIS ISSUE WITH THE 2003 Q45. INFINITI/NISSAN RECALL # 03V455000
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11228277June 28, 2019
WHEELS, UNKNOWN OR OTHER
I HAD A PROBLEM WITH MY CAR, WITH THE TIRES CONSTANTLY LEAKING. I HAD TO FILL THEM WITH AIR ALL THE TIME, HAD THEM CHECKED A NUMBER OF TIMES, AND HAD TO HAVE THE RIMS CLEANED AND REGROUND, ETC., TRYING TO DETERMINE AND SOLVE THE PROBLEM. AFTER INCREDIBLE AGGRAVATION, WE FINALLY TRACKED THE PROBLEM DOWN TO CRACKS IN THE VALVE STEMS. THE VALVE STEMS CONTAINED THE AIR PRESSURE SENSORS AND WERE EXPENSIVE TO REPLACE, PARTS WERE AS MUCH AS $135 OR SO EACH, PLUS LABOR, WHICH COULD BE $200 OR MORE, AND THEN ALL THE TIRE PRESSURE SENSORS HAD TO BE RE-SET - I THINK THE TERM WAS RECALIBRATED OR SOMETHING, WHICH MOST PLACES DIDN'T HAVE EQUIPMENT TO DO OR COULDN'T DO CORRECTLY, AND I ALWAYS ENDED UP HAVING TO GO TO A DEALERSHIP. AT LEAST THEY SOMETIMES DIDN'T CHARGE AS MUCH AS THEY COULD, AS I WAS A CAPTIVE; IF THEY DIDN'T DO IT, NONE OF THE SENSORS WOULD WORK. I DISCOVERED THAT THESE VALVE STEM SENSORS WERE SUBJECT TO CRACKING, AND HAD JUST BEEN PUT ON THE CAR FOR THAT MODEL YEAR. MIDWAY THROUGH THE MODEL YEAR, THEY WERE REPLACED WITH ANOTHER TYPE MADE OUT OF BETTER MATERIAL. BEFORE MY MODEL YEAR, THE TYPE USED WAS IN SERVICE I THINK FOR SEVERAL YEARS. THE MID-YEAR REPLACEMENTS WERE USED FOR THE NEXT SEVERAL MODEL YEARS. THIS ALL SUGGESTS THAT THEY KNEW THERE WAS A PROBLEM, BUT AVOIDED PAYING FOR IT OR ISSUING A RECALL. COULD YOU PLEASE INVESTIGATE? THANK YOU
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11173306January 31, 2019
STRUCTURE:BODY, STEERING
TL* THE CONTACT OWNS A 2004 INFINITI Q45. THE CONTACT STATED THAT THE VEHICLE'S FRAME WAS CORRODED. THE VEHICLE WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 11V244000 (STEERING, SUSPENSION). THE MANUFACTURER STATED THAT THEY WOULD NOT PAY FOR THE REPAIR. THE DEALER WAS NOT CONTACTED. THE CONTACT KEPT THE VEHICLE PARKED AND HAD NOT DRIVEN IT IN OVER TWO YEARS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11172224January 26, 2019
VEHICLE SPEED CONTROL
WHEN CRUISE CONTROL IS SET, AND THE NEED TO PASS OR SPEED UP IS REQUIRED, IF YOU PRESS THE GAS PEDAL TO THE FLOOR THE CAR TAKES OFF AND *THEN STOPS RESPONDING AND DROPS BACK TO SET CRUISE CONTROL SPEED WHILE YOU ARE STILL FLOORING IT. IT BUCKS BACK AND FORTH. I SPOKE TO SEVERAL OWNERS ON A INFINITI OWNERS SITE AND THERES PERFORMS THE SAME. ITS DANGEROUS IF THE NEED TO SPEED UP OCCURS. THIS IS A PROBLEM IN THE CODING OF THE PARAMETERS IN THE ECU AND COULD BE DEADLY WITH UNEXPECTED PERFORMANCE. THIS HAPPENED ON I40 IN KNOXVILLE TENNESSEE IN HEAVY TRAFFIC. THIS CONDITION CAN BE REPEATED BACK TO BACK MULTIPLE TIMES.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11051157November 29, 2017
ENGINE
TL* THE CONTACT OWNS A 2003 INFINITI Q45. WHILE DRIVING 35 MPH, THE VEHICLE STALLED AND THE SERVICE ENGINE WARNING INDICATOR ILLUMINATED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AFTER SEVERAL ATTEMPTS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE CAMSHAFT POSITION SENSOR FAILED AND NEEDED REPLACEMENT. THE VEHICLE WAS NOT REPAIRED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 03V455000 (ENGINE AND ENGINE COOLING). THE FAILURE MILEAGE WAS APPROXIMATELY 150,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10984544May 9, 2017
ELECTRONIC STABILITY CONTROL (ESC)
MY CAR RANDOMLY SHUTS OFF IN THE MIDDLE OF DRIVING. FIRST TIME I WAS ON THE HIGHWAY AND IT STARTED RIGHT BACK UP. THEN AGAIN WHEN I GOT HOME. ONE TIME IT HAD A P0340 CODE FOR THE CAMSHAFT POSITION SENSOR, AND I CHANGED IT THREE TIMES IN THE LAST WEEK AND IT STILL SHUTS OFF IN THE MIDDLE OF DRIVING.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10984183May 8, 2017
ENGINE
TL* THE CONTACT OWNS A 2004 INFINITI Q45. THE CONTACT STATED THAT WHILE DRIVING AT 40 MPH, THE ENGINE STALLED WHILE THE SERVICE ENGINE SOON WARNING LIGHT AND ANOTHER UNKNOWN LIGHT ILLUMINATED. THE VEHICLE WAS ABLE TO RESTART. THE CONTACT STATED THAT THE VEHICLE FAILED TO ACCELERATE AFTER THE FAILURE OCCURRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE CAM POSITION SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, HOWEVER THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 111,000. THE VIN WAS NOT AVAILABLE.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10969410March 29, 2017
SEAT BELTS
TAMARA RECALLED MY SEATBELT LIGHT HAS BEEN ON FOR THE LAST YEAR. I WERE TOLD BY THE INFINITY DEALER THAT MY CAR WAS NOT RECALL FOR THE SEATBELT. THE SEATBELT WARNING LIGHT STAYS ON CONSTANTLY IN THE NAVIGATION SYSTEM AND A LITTLE BLANKING ICON. I AM TOLD BY THE DEALER THAT I AM RESPONSIBLE FOR REPAIRS
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10894023August 8, 2016
ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM
TL* THE CONTACT OWNS A 2003 INFINITI Q45. WHILE DRIVING VARIOUS SPEEDS, THE ENGINE STALLED WITHOUT WARNING AND ALL POWER WAS LOST. AFTER SEVERAL ATTEMPTS, THE VEHICLE WAS ABLE TO RESTART. THE FAILURE RECURRED RANDOMLY. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 61,000. UPDATED 11/29/16*LJ THE CONSUMER HAS SINCE TRADED THE VEHICLE. UPDATED 12/06/16.*JB
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10860028April 18, 2016
SERVICE BRAKES
TL* THE CONTACT OWNS A 1997 INFINITI Q45. WHILE DRIVING APPROXIMATELY 75 MPH, THE BRAKE PEDAL WAS DEPRESSED AND FAILED TO RESPOND. AN UNKNOWN WARNING LIGHT ILLUMINATED. THE VEHICLE STOPPED AFTER THE VEHICLE WAS PLACED INTO THE NEUTRAL POSITION. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 162,915.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10777700September 25, 2015
ENGINE
START CAR FIRST THING IN THE AM. DRIVING NORMAL. WITHIN 5 MILES ENGINE SHUTS OFF WITHOUT WARNING. LOOSE ALL POWER. NO CODE APPEARS. AUTO WILL NOT START. FINALLY STARTS AFTER 5 OR 6 TRIES. THIS PROBLEM HAS CONTINUED TO OCCUR EVERY TWO OR THREE DAYS OVER THE LAST SIX MONTHS. BUT AUTO STARTS IMMEDIATELY AFTER. AUTO AND TRANSMISSION ARE NOT PERFORMING PROPERLY. NOW THE ENGINE STALL WHILE DRIVING IS HAPPENING ON A DAILY BASIS. AUTO HAS BEEN CHECKED OUT AT GEORGE HARTE INFINITI, WEST HAVEN, CT AT LEAST FIVE TIMES. DEALERSHIP CLAIMS THEY CANNOT ADDRESS THE PROBLEM BECAUSE NO ERROR CODE APPEARS. OTHER THAN THIS PROBLEM, THIS AUTO IS IN EXCELLENT CONDITION AND SHOULD PERFORM SATISFACTORILY FOR MANY YEARS TO COME. THERE WAS A RECALL (INFINITI R3021) THAT ADDRESSED THESE EXACT PROBLEMS, BUT THE DEALER SERVICE MANAGER CLAIMED THAT THIS CAR WAS NOT INCLUDED. THIS PROBLEM IS A SERIOUS SAFETY HAZARD AND THERE SHOULD BE SOME WAY THIS CAN BE FIXED. SIMILAR, IF NOT EXACT, COMPLAINTS FOR THIS EXACT MODEL INFINITI HAVE BEEN POSTED ON THE INTERNET WITH OWNERS INDICATING OUTRAGEOUS FRUSTRATION WITH THE INFINITI MANUFACTURER. WHEN THERE ARE MULTIPLE COMPLAINTS INDICATING EXACT PROBLEMS, THE FAULT CERTAINLY LAYS WITH THE MANUFACTURER. IS THERE SOMETHING THAT CAN BE DONE?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10721398May 26, 2015
AIR BAGS
TL* THE CONTACT OWNS A 2002 INFINITI Q45. THE CONTACT STATED THAT THE AIR BAG LIGHT WAS CONSTANTLY ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE DEALER AND MANUFACTURER WERE MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 90,000. THE VIN WAS NOT AVAILABLE.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10702990March 31, 2015
ENGINE
I OWN A 2003 INFINITY Q45 AND WITHOUT WARNING THIS VEHICLE STALLS WHERE EVER IT WANTS AT A LIGHT WHILE YOU DRIVING ON A MAJOR HIGHWAY ON A MAJOR STREET NO WARNING WHAT SO EVER AND INFINITY IS AWARE OF THE PROBLEM BUT THEY ONLY WANT TO HELP CERTAIN VIN NUMBERS. I TOOK MY FAMILY SKIING TO SCRANTON PA AND ON INTERSTATE I80 THE CAR STALL WITHOUT WARNING MY ENTIRE FAMILY COULD HAVE BEEN KILLED. PLEASE DO SOMETHING ABOUT THIS IS A BIG ISSUE AND BEFORE SOMEONE GETS HURT OR KILLED SOMEONE SHOULD HELP. *TR
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10682419February 10, 2015
VEHICLE SPEED CONTROL
WAS ON THE HIGHWAY TAKINGS GRANDKIDS HOME AND THE CAR JUST CUT OFF RIGHT IN THE MIDDLE OF A BUSY HIGHWAY. IT TOOK SEVERAL TRIES TO GET IT TO START AGAIN BUT IT STAYED ON ONLY LONG THOUGH FOR ME TO GET IT ON THE SHOULDER. WE COULD HAVE BEEN IN A SERIOUS WRECK. IT IS ONLY BY THE GRACE OF GOD AND FUNCTIONAL HAZARD LIGHTS THAT WE AND OTHER VEHICLES WEREN'T INJURED. WE HAD TO BE TOWED BECAUSE WE WERE TOO FAR FROM AN EXIT TO RISK TRYING TO DRIVE IT ANY FURTHER! *TR
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10681313February 4, 2015
ENGINE, STEERING
TL* THE CONTACT OWNS A 2003 INFINITI Q45. THE CONTACT STATED THAT WHILE DRIVING AT 30 MPH, A NOISE EMITTED FROM THE FRONT OF THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER. THE TECHNICIAN DIAGNOSED THAT THE FAN BELT AND POWER STEERING BELT NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. IN ADDITION, THREE MONTHS LATER, THE VEHICLE FAILED TO START. THE VEHICLE WAS TAKEN BACK TO THE DEALER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 92,000. THE VIN WAS UNAVAILABLE.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10659426November 19, 2014
AIR BAGS
TL* THE CONTACT OWNS A 1998 INFINITI Q45. THE CONTACT STATED THAT THE AIR BAG LIGHT ILLUMINATED. THE DEALER STATED THAT THE AIR BAG WAS FAULTY. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE WAS UNKNOWN.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10639792September 29, 2014
ENGINE AND ENGINE COOLING
TL* THE CONTACT OWNS A 1998 INFINITI Q45. THE CONTACT INDICATED THAT THE SERVICE ENGINE SENSOR ILLUMINATED AND THERE WAS A LOSS OF POWER. THE CONTACT STATED THAT THE VEHICLE STALLED ON SEVERAL OCCASIONS. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AFTER SEVERAL ATTEMPTS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHO WAS NOT ABLE TO REPLICATE OR DIAGNOSE THE FAILURE. THE CONTACT WAS NOT INCLUDED IN RECALL NHTSA CAMPAIGN ID NUMBER: 03V455000 (ENGINE AND ENGINE COOLING). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10638308September 23, 2014
ENGINE, STEERING, ELECTRICAL SYSTEM
I WAS DRIVING AND DASHBOARD LIGHTS CAME ON, THEN VEHICLE CUT OFF ON THE HIGHWAY. I ASSUMED IT WAS A BAD ALTERNATOR, BUT IT WAS A DEFECTIVE CRANK SENSOR. *TR
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#10630975September 5, 2014
AIR BAGS
TL* THE CONTACT OWNS A 2002 INFINITI Q45. THE CONTACT STATED THAT WHILE DRIVING 55 MPH, THE AIR BAG WARNING INDICATOR WAS ILLUMINATED. THE PROBLEM OCCURRED NUMEROUS OF TIMES. THE VEHICLE WAS TAKEN TO DEALER MECHANIC AND DIAGNOSED THE HARNESS UNDERNEATH DRIVER SEAT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 134,000. THE VIN WAS UNAVAILABLE.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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