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Electrical systemPart report

2021 Infiniti QX50 Electrical system Problems

Complaints
8about this part
Share
20%of 41 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the electrical system of the 2021 Infiniti QX50, 20% of the 41 complaints for this model year. 1 of these say a crash was involved, according to the filers.

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 vehicle has experienced ongoing electrical and safety-system related malfunctions shortly after being purchased as an INFINITI Certified Pre-Owned vehicle in April 2025. The issues initially included flickering interior and exterior lights, intermittent door lock malfunctions, and other electrical irregularities. In June 2025, I received notification through the INFINITI app regarding a major engine recall involving engine bearing failure concerns affecting my vehicle. I brought the vehicle to Harte INFINITI for inspection regarding the recall and my electrical concerns. …”

NHTSA complaint #11738589, filed 2026-05

“While driving on the highway and having no visible vehicle in front of me; my car automatically slams on the breaks and the Emergency Braking system light comes up on the dashboard briefly and then disappears. This has occurred multiple times while driving on highway speeds. It is concerning because there has been no evident or visible vehicles in front of my vehicle when my car abruptly slams on the brakes. To me this is a safety concern. I had mentioned this concern to the service advisor at Infiniti, but he said it would cost approximately $200 just to diagnose it. …”

NHTSA complaint #11680672, filed 2025-08

“Around 530pm At the corner of Briarcliff Rd NE Atlanta Ga and N Druid Hills Rd NE Atlanta GA As I was about to accelerate after the Red Light turned green, my car experienced a significant loss of power. Several warning lights came on, the engine light came on and a warning that said System Default came on. I was almost rear ended but was able to put on my hazards and coast to the side of the road, where I turned the car off and back on. It continued to display the warning and system default message as well as loss of power. I was able to coast into the parking garage at work and park. …”

NHTSA complaint #11704901, filed 2025-12

“Vehicle Issue Summary – 2021 INFINITI QX50 I purchased a 2021 INFINITI QX50 in March 2024. Recently, I received notice of an active safety recall (NHTSA 25V437) related to the VC-Turbo engine bearings. In addition to the recall alert, I’ve also experienced several concerning symptoms: 1) A knocking noise when reversing. 2) The malfunction indicator light turning on and off intermittently. 3) Other irregular behaviors that raise concerns about engine performance and overall safety. Given the recall and these symptoms, I’d like to schedule an immediate inspection and any necessary repairs. …”

NHTSA complaint #11684761, filed 2025-09

“3 separate accounts of automatic braking (phantom braking ) has occurred on the last year and electronic emergency brake would not engage 3 times in one day. Worried about rear end collision due to my car braking on its own. Brought to an infinity dealer who tested it with software (unknown type or version)and found no codes.”

NHTSA complaint #11677355, filed 2025-07

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2024240%
2022529%
2021820%
2020412%
20191712%
201718%
2016421%

Other parts of the 2021 Infiniti QX50

Engine
18 complaints
Forward collision avoidance
8 complaints
Engine cooling
7 complaints
Brakes
4 complaints
Transmission and drivetrain
4 complaints
Other or unknown
3 complaints
Fuel system
2 complaints
Exterior lighting
1 complaints
Lane departure
1 complaints
Steering
1 complaints
Body and structure
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 2021 Infiniti QX50

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