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Electrical systemPart report

2005 Infiniti QX56 Electrical system Problems

Complaints
7about this part
Share
9%of 80 total for the year
Median mileage
109,808miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the electrical system of the 2005 Infiniti QX56, 9% of the 80 complaints for this model year. Where a mileage was given, the median is 109,808 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.

“While driving in residential/business area my vehicle completely lost power and turned off. I drifted to the side of the road without power steering. Tried to start vehicle again. Vehicle would start but would immediately die-would not idle. After resting approx 5 minutes I was able to start again and continue home. This has happened 3 times in the past 2 months. I am terrified to drive this vehicle again. I also cannot keep the drivers side headlight working. Bulbs constantly blow out at over 300.00 dollars each.”

NHTSA complaint #11331118, filed 2020-06, 270,000 miles

“My airbag light stays on constantly. There is a knocking sound that occurs as well when I'm driving. I'm concerned if I'm involved in a collision my airbags will not deploy. I contacted Infiniti and was told they need to reset it and will cost $800.00 and my extended warranty did not cover it and was not part of the recall list. The ipdm ECM relay switch causes my instrument cluster gauge to go in and out, the check engine light comes on, my truck jerks trying to switch gears, it will sometimes start up after several tries, it causes the RPM's to read over 7 when I'm only driving 60 MPH. …”

NHTSA complaint #11208379, filed 2019-05, 100 miles

“This letter is in reference to a previous complaint filed with Infiniti consumer affairs on december 3, 2009, regarding my vehicle shutting completely down, stalled out, not moving in the drive or reverse position at a busy intersection on a rainy stormy evening. This occurrence could have caused a serious accident or worse, a fatality. As a result of police assistance and having my vehicle towed directly to the dealership, to date there are no mechanical issues found by the dealer related to my vehicle shutting down at the intersection. …”

NHTSA complaint #10644210, filed 2014-10, 45,000 miles

“My airbag light stays on constantly. There is a knocking sound that occurs as well when I'm driving. I'm concerned if I'm involved in a collision my airbags will not deploy. I contacted Infiniti and was told they need to reset it and will cost $800.00 and my extended warranty did not cover it and was not part of the recall list. The ipdm ECM relay switch causes my instrument cluster gauge to go in and out, the check engine light comes on, my truck jerks trying to switch gears, it will sometimes start up after several tries, it causes the RPM's to read over 7 when I'm only driving 60 MPH. …”

NHTSA complaint #10862514, filed 2016-05, 109,808 miles

“While driving on the freeway I noticed that the tachometer continued rising instead of going up and down with the speed. By the time I got home the gauge was facing straight down, stuck in that position. I turned the car off and on to see if it would change the gauge, but nothing happened. Next I put the can in park, set the parking brake and hit the accelerator and the gauge began to slowly move backwards, after doing this a few times the gauge moved back around slowly. After doing this 5 times the gauge is just to the left of the red area. …”

NHTSA complaint #10501472, filed 2013-03, 92,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
201339%
2012916%
201134%
2010415%
2009229%
2008815%
2007419%
2006911%
200579%
20041615%

Other parts of the 2005 Infiniti QX56

Brakes
34 complaints
Fuel system
25 complaints
Air bags
5 complaints
Exterior lighting
5 complaints
Transmission and drivetrain
5 complaints
Steering
4 complaints
Engine cooling
3 complaints
Engine
2 complaints
Equipment
2 complaints
Other or unknown
2 complaints
Suspension
2 complaints
Latches, locks and linkages
1 complaints

← All problems reported for the 2005 Infiniti QX56

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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