2003 Infiniti Q45 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 8%of 12 total for the year
- Median mileage
- 61,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2003 Infiniti Q45, 8% of the 12 complaints for this model year. Where a mileage was given, the median is 61,000 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.
“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
- 10145053Aug 17, 2018OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018 Please discard earlier versions of this bulletin. The announcement from March 21, 2017 has been revised to include…
- 10145052Aug 17, 2018OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018 Please discard earlier versions of this bulletin The announcement from March 21, 2017 has been revised to include: o…
- 10019293Mar 31, 2006Malfunction indicator lamp with diagnostic trouble code u1000 or u1010 stored in engine control unit. 2002 - 2006 infiniti vehicles with can communication.
Engine cooling: other model years
Other parts of the 2003 Infiniti Q45
6 complaintsElectrical system
3 complaintsSteering
3 complaintsBrakes
2 complaintsElectronic stability control
2 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