RoadVitals

2003 INFINITI Q45 Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
12
Latest May 5, 2021
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
7
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
1

What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2003 INFINITI Q45, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Engine735.0%
  • Driver assistance315.0%
  • Electrical315.0%
  • Steering315.0%
  • Brakes210.0%
  • Powertrain (other)15.0%
  • Seat belts15.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Engine

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.

7
reports

From owner reports, verbatim

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

NHTSA ID 11415335 · filed May 5, 2021

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.

NHTSA ID 11051157 · filed Nov 29, 2017

Too few reports in this category for a page of its own — they appear in the full complaint list.

Driver assistance

Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.

3
reports

From owner reports, verbatim

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

NHTSA ID 11415335 · filed May 5, 2021

BOUGHT 2003 Q 45 IN SPRING 2007, STILL UNDER WARRANTY. JUNE 2009 AT 79,000 MILES THE ENGINE WAS REPLACED (UNDER WARRANTY). 6/30/09, 80,081 MILES CAR PROBLEM WITH NO ACCELERATION AND SERVICE ENGINE AND CRUISE CONTROL LIGHT COMING ON. PROBLEM DIDN'T REOCCUR UNTIL JUNE 2012 WHEN ENGINE SUDDENLY CUT OFF WHILE DRIVING. WOULD RESTART IN NEUTRAL BUT IN A WEEK OR SO IT DID IT AGAIN ON THE INTERSTATE AT ABOUT 55. FORTUNATELY WAS IN RIGHT LANE AND COULD GET TO EMERGENCY LANE BEFORE SOMEONE RAN INTO ME. CAR RESTARTED. CONTINUED LIKE THIS UNTIL 6/29/12 WHEN REPAIRED, ONLY IT CONTINUED TO STOP AND THE CRUISE CONTROL/TRACTION LIGHTS WOULD COME ON AND CAR WOULD SUDDENLY STOP AND THEN SURGE FORWARD. 8/11/12 SERVICED FOR SAME PROBLEM. 8/14/12 SAME THING, CAR STOPPED THEN SURGED, THEN THE ENGINE CUT OFF AND LOST STEERING/BRAKES. INFINITI SERVICE AGAIN, THIS TIME INSTALLING NEW ELECTRONIC CONTROL MODULE ($ 1600). THE DEALER KEPT THIS CAR FOR SEVERAL DAYS AND A MECHANIC DROVE IT UNTIL IT HAPPENED SEVERAL TIMES. THE MECHANIC OR SOMEONE AT INFINITI DEALER TOLD ME IT WAS A "DEATH TRAP" AND IT IS. A FEW WEEKS LATER GOING AROUND A ROUNDABOUT, THE ENGINE TURNED OFF AND LOST STEERING. PUT IN NEUTRAL AND RESTARTED. COUPLE OF MONTHS LATER, ENGINE TURNED OFF WHILE DRIVING. FRIDAY JUNE 7, 2013 I PULLED ONTO BUSY HIGHWAY, DROVE A MILE AND ENGINE SUDDENLY STOPPED. BEFORE I COULD GET IN NEUTRAL TO RESTART, A DUMP TRUCK NEARLY REAR-ENDED ME. GOT IT RESTARTED, THEN THE CRUISE CONTROL LIGHT CAME ON, CAR STOPPED AGAIN AND THEN SURGED FORWARD. I HAVE CONTACTED INFINITI AND INTERNET SEARCHED. THERE WERE MANY INFINITIS WITH THIS PROBLEM IN THE YEARS 2002-2003, THOUGH ROSWELL INFINITI SAID THERE WERE NO RECALLS FOR THIS PROBLEM ON ANY INFINITI YESTERDAY. THIS IS A VERY DANGEROUS SITUATION, AND INFINITI ACTS LIKE THEY KNOW NOTHING ABOUT THIS PROBLEM. *TR

NHTSA ID 10519942 · filed Jun 15, 2013

Too few reports in this category for a page of its own — they appear in the full complaint list.

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

3
reports

From owner reports, verbatim

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

NHTSA ID 10894023 · filed Aug 8, 2016

I HAVE A 2003 Q45 AND THE CAR HAS SHUT OFF WHILE DRIVING SEVERAL TIMES. THERE IS HAS IN THE CAR. I GET IT MAINTENANCE REGULARLY. ITS SHUT OFF WHILE DRIVING ON THE HIGHWAY PUTTING MY FAMILY AT RISK. ITS NOT SAFE TO DRIVE. AFTER DOING ONLINE SEARCHES I DETERMINED THAT A LOT OF PEOPLE ARE HAVING THIS SAME ISSUE WITH THIS MAKE AND MODEL. PLEASE RESEARCH THIS ISSUE BECAUSE I AM TERRIFIED TO DRIVE THIS CAR. IF THERE IS AN ISSUE WITH ELECTRONIC CHIP, INFINITI SHOULD HAVE TO REPLACE IT. THANK YOU *TR

NHTSA ID 10574227 · filed Mar 23, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Steering

Reports naming the steering system — racks, columns, power-steering assist and steering linkage.

3
reports

From owner reports, verbatim

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.

NHTSA ID 10681313 · filed Feb 4, 2015

TL* THE CONTACT OWNS A 2003 INFINITI Q45. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, THE STEERING WHEEL SEIZED AND THERE WAS A SUDDEN LOSS OF POWER. THE VEHICLE WAS ABLE TO RESTART AND RESUMED TO NORMAL. THE FAILURE OCCURRED ON THREE OCCASIONS. THE DEALER REPAIRED THE VEHICLE BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 80,000 AND THE CURRENT MILEAGE WAS 97,000.

NHTSA ID 10610755 · filed Jul 15, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

2
reports

From owner reports, verbatim

BOUGHT 2003 Q 45 IN SPRING 2007, STILL UNDER WARRANTY. JUNE 2009 AT 79,000 MILES THE ENGINE WAS REPLACED (UNDER WARRANTY). 6/30/09, 80,081 MILES CAR PROBLEM WITH NO ACCELERATION AND SERVICE ENGINE AND CRUISE CONTROL LIGHT COMING ON. PROBLEM DIDN'T REOCCUR UNTIL JUNE 2012 WHEN ENGINE SUDDENLY CUT OFF WHILE DRIVING. WOULD RESTART IN NEUTRAL BUT IN A WEEK OR SO IT DID IT AGAIN ON THE INTERSTATE AT ABOUT 55. FORTUNATELY WAS IN RIGHT LANE AND COULD GET TO EMERGENCY LANE BEFORE SOMEONE RAN INTO ME. CAR RESTARTED. CONTINUED LIKE THIS UNTIL 6/29/12 WHEN REPAIRED, ONLY IT CONTINUED TO STOP AND THE CRUISE CONTROL/TRACTION LIGHTS WOULD COME ON AND CAR WOULD SUDDENLY STOP AND THEN SURGE FORWARD. 8/11/12 SERVICED FOR SAME PROBLEM. 8/14/12 SAME THING, CAR STOPPED THEN SURGED, THEN THE ENGINE CUT OFF AND LOST STEERING/BRAKES. INFINITI SERVICE AGAIN, THIS TIME INSTALLING NEW ELECTRONIC CONTROL MODULE ($ 1600). THE DEALER KEPT THIS CAR FOR SEVERAL DAYS AND A MECHANIC DROVE IT UNTIL IT HAPPENED SEVERAL TIMES. THE MECHANIC OR SOMEONE AT INFINITI DEALER TOLD ME IT WAS A "DEATH TRAP" AND IT IS. A FEW WEEKS LATER GOING AROUND A ROUNDABOUT, THE ENGINE TURNED OFF AND LOST STEERING. PUT IN NEUTRAL AND RESTARTED. COUPLE OF MONTHS LATER, ENGINE TURNED OFF WHILE DRIVING. FRIDAY JUNE 7, 2013 I PULLED ONTO BUSY HIGHWAY, DROVE A MILE AND ENGINE SUDDENLY STOPPED. BEFORE I COULD GET IN NEUTRAL TO RESTART, A DUMP TRUCK NEARLY REAR-ENDED ME. GOT IT RESTARTED, THEN THE CRUISE CONTROL LIGHT CAME ON, CAR STOPPED AGAIN AND THEN SURGED FORWARD. I HAVE CONTACTED INFINITI AND INTERNET SEARCHED. THERE WERE MANY INFINITIS WITH THIS PROBLEM IN THE YEARS 2002-2003, THOUGH ROSWELL INFINITI SAID THERE WERE NO RECALLS FOR THIS PROBLEM ON ANY INFINITI YESTERDAY. THIS IS A VERY DANGEROUS SITUATION, AND INFINITI ACTS LIKE THEY KNOW NOTHING ABOUT THIS PROBLEM. *TR

NHTSA ID 10519942 · filed Jun 15, 2013

THE BRAKES IN THIS VEHICLE MALFUNCTIONED AND BY SUCH CAUSED A VERY SERIOUS ACCIDENT. THE DEALER, NISSAN OF THE EASTSIDE IN BELLEVUE WA WAS SUPPOSED TO FIX SAID BRAKES AS I NOTED THAT THEY WERE NOT OPERATING CORRECTLY IN MY TEST DRIVE OF THE VEHICLE AND I WROTE THE CONTRACT SUBJECT TO THE BRAKES BEING FIXED. WHEN THEY DIDN'T FIX THE BRAKES THEY WERE COMMITTING FRAUD AND ALSO IN BREECH OF CONTRACT.. THEY DID NOT FIX THE BRAKES AS AGREED. INFINITI OF FIFE THEN SUPPOSEDLY DID SAID BRAKE WORK. A FEW DAYS LATER THE CAR IS IN AN ACCIDENT DUE TO BRAKE FAILURE. COME TO FIND OUT, BOTH DEALERSHIPS ARE OWNED BY THE SAME PEOPLE THUS MAKING COLLUSION TO HIDE THIS SAFETY ISSUE A VERY EASY ROAD TO TRAVEL. THE CAR IS NOW CURRENTLY OFFERED FOR SALE AGAIN AT INFINITI OF FIFE THIS TIME AND THE ACCIDENT ISN'T DISCLOSED, IN FACT THE CAR IS SAID TO HAVE A CLEAN CARFAX HISTORY. THIS CONSTITUTES FRAUD. I HAVE NOT AS YET BEEN COMPENSATED FOR MY LOSS. MY INSURANCE PAID TO FIX THIS VEHICLE WHICH THE NISSAN DEALER PROMPTLY REPO-ED (5 MINUTES AFTER I PAID TO GET IT OUT OF THE SHOP) WHEN I REFUSED TO PAY FULL RETAIL DUE TO THE AFOREMENTIONED ISSUES. THE DEALERSHIP OWNERS AND ALL INVOLVED SHOULD BE BROUGHT UP ON FELONY RECKLESS ENDANGERMENT CHARGES AS WELL AS FRAUD CHARGES. I DO EXPECT TO BE COMPENSATED FOR THIS AS WELL AS DOES MY INSURANCE COMPANY, WHICH PAID OVER $10,000 TO FIX THIS DEATH TRAP OF A CAR. I HOPE YOU CAN HELP AS I AM IN DIRE NEED OF ASSISTANCE. *TR

NHTSA ID 10255514 · filed Jan 18, 2009

Too few reports in this category for a page of its own — they appear in the full complaint list.

Powertrain (other)

Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.

1
report

From owner reports, verbatim

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

NHTSA ID 11415335 · filed May 5, 2021

Too few reports in this category for a page of its own — they appear in the full complaint list.

Seat belts

Reports naming seat belts, buckles, retractors and pretensioners.

1
report

From owner reports, verbatim

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

NHTSA ID 10969410 · filed Mar 29, 2017

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .