1998 Infiniti Q45 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 7%of 14 total for the year
- Median mileage
- 100,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 1998 Infiniti Q45, 7% of the 14 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.
“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.”
NHTSA complaint #10639792, filed 2014-09, 100,000 milesEngine cooling: other model years
Other parts of the 1998 Infiniti Q45
6 complaintsElectrical system
2 complaintsBrakes
1 complaintsSeat belts
1 complaintsSteering
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 1998 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