2002 Infiniti Q45 Electrical system Problems
- Complaints
- 2about this part
- Share
- 10%of 20 total for the year
- Median mileage
- 2,075miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the electrical system of the 2002 Infiniti Q45, 10% of the 20 complaints for this model year. Where a mileage was given, the median is 2,075 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.
“1 - there is up to a two second delay when quick acceleration is required. At times it feels as if the engine completely stalled. 2 - the vehicle often will not downshift to slow the vehicle on a hill. I could be in 5th gear at around only 1800 RPM, and when I downshift twice, it will not go to 3rd. I often have to downshift up to 6 times for it to respond and switch to third. I need to take my eyes off the road to constantly check if I'm in the gear I select. 3 - the parking/emergency break will not hold the fully loaded vehicle on a hill. …”
NHTSA complaint #10120811, filed 2005-05, 150 miles“A few weeks after purchase of my 2002 Infiniti Q45 (under 4000 miles)during an extended road trip, I lost all controls on my A/C and audio systems.in a separate incident, I also lost control of my cruise control system. After stopping and restarting the car, the systems were re- activated. With the extensive computerized systems on this car, this could have been a much more serious problem! I reported this problem to my dealer but they were not able to replicate the problem. On another long trip,a few thousand miles later,both problems reoccurred. …”
NHTSA complaint #10068052, filed 2004-04, 4,000 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.
- 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.
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 2002 Infiniti Q45
4 complaintsAir bags
3 complaintsExterior lighting
3 complaintsWheels
3 complaintsBrakes
2 complaintsSeats
2 complaintsTires
2 complaintsVehicle speed control
2 complaintsElectronic stability control
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2002 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