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
2004 Infiniti Q45
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Q45 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 5 of 7 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Exterior Lighting. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
3 reportsMY LOW BEAM HEADLAMP SYSTEM HAS NOW FAILED AT TWO SEPARATE TIMES, BOTH DURING NIGHTTIME DRIVING. THE FIRST WAS ON NOVEMBER 2, 2009, AT 37,600 MILES, THE LEFT HID BALLAST FAILED; NISSAN REPAIRED THE FAILURE UNDER WARRANTY ALTHOUGH ITS TIME-PORTION HAD EXPIRED. THE SECOND FAILURE WAS AT 47,600 MILES ON DECEMBER 1, 2011. NISSA…
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MY LOW BEAM HEADLAMP SYSTEM HAS NOW FAILED AT TWO SEPARATE TIMES, BOTH DURING NIGHTTIME DRIVING. THE FIRST WAS ON NOVEMBER 2, 2009, AT 37,600 MILES, THE LEFT HID BALLAST FAILED; NISSAN REPAIRED THE FAILURE UNDER WARRANTY ALTHOUGH ITS TIME-PORTION HAD EXPIRED. THE SECOND FAILURE WAS AT 47,600 MILES ON DECEMBER 1, 2011. NISSAN/INFINITI CONSUMER AFFAIRS WERE TOLD AND ACKNOWLEDGED THAT MILEAGE WARRANTY WAS NO-WHERE-NEAR EXPIRED - BUT TIME HAD - YET, TALKED AS THOUGH THEY WOULD HELP WITH THE REPAIR. THE QUID-PRO-QUO WAS THAT I GET AN INFINITI DEALER TO VERIFY PROBLEM AND COST TO REPAIR. AT MY COST OF $125.88 THE INFINITI DEALER AGREED THE RIGHT BALLAST WAS NOW BAD; COST TO REPAIR APPROXIMATELY $1100. NISSAN CONSUMER AFFAIRS WERE INSTRUCTED (ACCORDING TO CA) BY A HIGHER ECHELON OF NISSAN NOT TO REPAIR. CA DID AGREE TO REFUND MY DEALER COST OF $125.88. CONCLUSION: IN 2004 THIS WAS NISSAN/INFINITI'S PREMIUM PRODUCT. THIS CAR WAS EARLIER REPORTED TO NHTSA BECAUSE THE FORE-AFT POWER FUNCTION OF THE DRIVER'S SEAT FAILED AT 42,170 MILES AND NISSAN WOULD ACCEPT NO RESPONSIBILITY. SURELY THE NHTSA MUST REASONABLY THINK THAT FAILURE OF A DRIVER'S SEAT IN ITS REARMOST POSITION AND TWO FAILURES OF THE LOW-BEAM HEADLAMP SYSTEM COULD EASILY PLACE ANY DRIVER AND HIS/HER PASSENGERS IN A LIFE THREATENING SITUATION. *TR
2004 INFINITI Q45 LEMON THIS AUTOMOBILE HAS AN IN-SERVICE DATE OF 12-17-04, PURCHASED BY ME ON 02-08-08 AT 26,670 MILES WITH 10 MONTHS REMAINING ON THE TIME WARRANTY THAT'S EXPIRED. IT WAS RETURNED TO MAJOR INFINITI ON 09-29-10 WITH 42,171 MILES ^0,000 WARRANTY) AND AN INOPERATIVE DRIVER'S SEAT (N…
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2004 INFINITI Q45 LEMON THIS AUTOMOBILE HAS AN IN-SERVICE DATE OF 12-17-04, PURCHASED BY ME ON 02-08-08 AT 26,670 MILES WITH 10 MONTHS REMAINING ON THE TIME WARRANTY THAT'S EXPIRED. IT WAS RETURNED TO MAJOR INFINITI ON 09-29-10 WITH 42,171 MILES ^0,000 WARRANTY) AND AN INOPERATIVE DRIVER'S SEAT (NO REAR/FORWARD FUNCTION) FIXED IN AN UNSAFE POSITION FOR ME AND IMPOSSIBLE FOR MY WIFE - (7) INCHES SHORTER. AFTER DIAGNOSIS, MAJOR INFORMED ME THE REPAIR COST WOULD BE $1300 AND THAT INFINITI REFUSED ANY WARRANTY RESPONSIBILITY. I CALLED NISSAN CONSUMER AFFAIRS AND SPOKE TO EMILY WHO GAVE ME A FILE # [XXX] AND TOLD ME A REGIONAL SPECIALIST WOULD CALL WITHIN TWO DAYS, NEXT DAY, SEPTEMBER 30, I CALLED NCA AGAIN AND TALKED TO [XXX], REGIONAL SPECIALIST. SHE TOLD ME I COULDN'T HAVE AN ANSWER ON NCA COVERING THE SEAT PROBLEM UNTIL MONDAY 10-4-10. OCTOBER 1, I AUTHORIZED ORDERING OF THE SEAT ADJUSTER ASSEMBLY AS I HAD NO OPTION SINCE OUR OTHER CAR WOULD BE UNAVAILABLE AFTER MONDAY. [XXX] CALLED OCTOBER 4 AND SAID NISSAN WOULD DO NOTHING TOWARD A WARRANTY REPAIR. MY COMPLAINT: FIRST, AN INOPERATIVE DRIVER'S SEAT SHOULD QUALIFY AS A SAFETY-RELATED DEFECT. MY WIFE AND I DRIVE WITH A 9 INCH HEIGHT DIFFERENTIAL AND WITH AN INOPERATIVE SEAT - AS IT WAS - SHE COULDN'T DRIVE WITHOUT PERCHING ON THE VERY FRONT EDGE. WITHOUT A SEAT BELT. I HAD NO OPTION BUT TO REPAIR THIS SEAT OR ABANDON ANY NOTION OF DRIVING OUT OF TOWN. IF WE DROVE OUT OF CELL PHONE COVERAGE AND I BECAME UNABLE TO DRIVE, AS IN AN EMERGENCY, MY WIFE WOULD BE COMPELLED TO DRIVE US WITHOUT THE SECURITY OF ADEQUATE SEATING AND SEAT RESTRAINTS. SECOND, AND ANOTHER REASON MY COMPLAINT, THIS CAR HAS A HISTORY OF ELECTRICAL PROBLEMS: CD @ 28395; CRUISE CONTROL @ 32442; BATTERY@35193; HEADLIGHT BALLAST AND LAMP @ 37694. UNRELATED BRAKE REPLACEMENT @ 36396. A DRIVER'S SEAT SHOULD QUALIFY AS SAFETY-RELATED. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).*TR
Official recalls
212V079000 · Air Bags:side/window
Feb 28, 2012
NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2005 INFINITI Q45 VEHICLES. A WIRING CONNECTOR FOR THE SEAT MOUNTED AIRBAG MAY EXPERIENCE INCREASED ELECTRICAL RESISTANCE, RESULTING IN THE NON-DEPLOYMENT OF THE SIDE AIR BAGS.
Consequence & remedy
Consequence: NON-DEPLOYMENT OF SIDE AIR BAGS COULD INCREASE THE RISK OF PERSONAL INJURY.
Remedy: NISSAN WILL NOTIFY OWNERS, AND DEALERS WILL MODIFY THE WIRING CONNECTOR, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 19, 2012. OWNERS MAY CONTACT NISSAN CUSTOMER SERVICE AT 1-800-647-7261.
04V497000 · Exterior Lighting:brake Lights:switch
Oct 13, 2004
ON CERTAIN PASSENGER VEHICLES, THE BRAKE LAMP SWITCH MAY MALFUNCTION.
Consequence & remedy
Consequence: IF THIS OCCURS, THE BRAKE LIGHTS WILL NOT ILLUMINATE WHEN THE BRAKE IS APPLIED, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL REPLACE THE BRAKE LAMP SWITCH. THE RECALL BEGAN ON OCTOBER 25, 2004. OWNERS SHOULD CONTACT INFINITI AT 1-800-662-6200.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2EA09005 · Non-deployment Of Side Thorax Air Bags
Opened Apr 1, 2009 · Closed Apr 3, 2012
Status: closed (inferred from source dates) · Air Bags:side/window
The subject vehicles are equipped with seat-mounted, side thorax air bags for the driver and front passenger.This investigation revealed that faulty side air bag module electrical connectors located under the driver and front passenger seats can cause an interruption in the electrical circuit that will drop the input voltage below the specified range.As a result, the air bag warning lamp illuminates on the instrument panel and the affected side air bag becomes deactivated.In June 2009, Nissan conducted a service campaign to repair the defective air bag electrical connectors in the subject vehicles (both Infiniti Q45 and M45 models).In June 2010, Nissan sent a second notification concerning the 2009 campaign to owners of vehicles that have not been remedied.Nissan is now conducting a safety recall of the Q45 vehicles not remedied under the service campaign (approximately 1,349 vehicles; see NHTSA Safety Recall No. 12V-079 for further details).The M45 vehicles are not included in the recall; however, Nissan is re-notifying owners of M45 vehicles that were not remedied under the previous service campaign.See attached report for more information.A safety-related defect trend has not been identified in the Infiniti M45 vehicles at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.The ODI reports cited above can be reviewed online at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification (ODI) numbers: 10327196 and 10402282
PE08067 · Side Air Bag NON-DEPLOYMENT
Opened Dec 2, 2008 · Closed Apr 1, 2009
Status: closed (inferred from source dates) · Air Bags:side/window
THE SUBJECT VEHICLES ARE EQUIPPED WITH SEAT-MOUNTED, SIDE TORSO AIR BAGS FOR THE DRIVER AND FRONT PASSENGER.THIS INVESTIGATION HAS REVEALED THAT FAULTY SIDE AIR BAG MODULE CONNECTORS LOCATED UNDER THE FRONT SEATS CAN CAUSE AN INTERRUPTION IN THE ELECTRICAL CURRENT THAT WILL DROP THE INPUT VOLTAGE BELOW THE SPECIFIED RANGE.AS A RESULT, THE AIR BAG WARNING LAMP ILLUMINATES AND THE AFFECTED SIDE AIR BAG IS DEACTIVATED.THE RATES OF COMPLAINTS, FIELD REPORTS AND WARRANTY CLAIMS RELATED TO THE SUBJECT ISSUE ARE VERY HIGH.FOR EXAMPLE, NISSAN SUBMITTED 4,853 WARRANTY CLAIMS ON 3,551 DISTINCT SUBJECT VEHICLES OUT OF 13,836 TOTAL SUBJECT VEHICLES.ALSO, ANALYSES OF WARRANTY CLAIMS INDICATE AN INCREASING FAILURE TREND OVER TIME.THIS PRELIMINARY EVALUATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS (EA09-005) TO FURTHER STUDY THE ISSUE.
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