2003 Infiniti Q45 Electrical system Problems
- Complaints
- 3about this part
- Share
- 25%of 12 total for the year
- Median mileage
- 100,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2003 Infiniti Q45, 25% of the 12 complaints for this model year. Where a mileage was given, the median is 100,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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”
NHTSA complaint #10574227, filed 2014-03, 100,000 miles“My 2003 Infiniti Q45 repeatedly stalls [so far, 15+ times] and often will not restart [10+ times]. With my family and me in the car, the stalling of the car puts us repeatedly in jeopardy of a rear-end collision or vandalism or bodily injury in dangerous areas. The car is properly maintained on its service schedule. It took my mechanic a week at a cost of $90 to confirm that the problem is the engine control module [ECM], the 'brain' of the car which controls other vehicle sensors, and this was confirmed by the Infiniti dealer at a cost of $150. …”
NHTSA complaint #10364192, filed 2010-11, 111,000 miles“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 the consumer has since traded the vehicle. Updated 12/06/16.”
NHTSA complaint #10894023, filed 2016-08, 61,000 milesRelated service bulletins
- 11002539May 20, 2024INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- 10190150Mar 24, 2021INFINITI; FRONT SONAR PARKING SENSOR SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- 10190026Mar 10, 2021NAVIGATION MAP DATA UPDATE MATRIX This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- 10119210Jul 7, 201712 VOLT BATTERY STORAGE AND MAINTENANCE FOR NEW VEHICLES IN RETAILER INVENTORY This bulletin has been amended throughout. Please discard all previous versions of this bulletin.
- 10192314Jan 27, 2014SERVICE INFORMATION Information necessary to service the Supplemental Restraint System (SRS) safely is included in the "RESTRAINTS" section of the Electronic Service Manual (ESM)…
- 10192191Jun 7, 2013As part of an enhanced emissions test for Inspection & Maintenance (I/M), some States may require the System Readiness Test (SRT) status be checked. - The SRT is used to indicate…
- 10044526Jul 6, 2012Infiniti: reprogramming electronic control unit (ecu) on all qualifying vehicles. No models listed. Model years 1998-2013.
- 10030145Apr 6, 2009Infiniti: electronic control unit damage can result from improper battery connection. The battery is required to stay connected when the engine is running. No model years listed.
- 10012880Aug 9, 2007Trailer light wiring. To include infiniti 2006 m35/m45. *tt updated 09-12-07.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2004 | 3 | 43% |
| 2003 | 3 | 25% |
| 2002 | 2 | 10% |
| 2001 | 2 | 40% |
| 1998 | 2 | 14% |
| 1997 | 4 | 33% |
| 1994 | 8 | 27% |
| 1992 | 4 | 14% |
| 1991 | 4 | 12% |
| 1990 | 2 | 7% |
Other parts of the 2003 Infiniti Q45
6 complaintsSteering
3 complaintsBrakes
2 complaintsElectronic stability control
2 complaintsEngine cooling
1 complaintsSeat belts
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2003 Infiniti Q45
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology