Tl* the contact owns a 2012 Infiniti qx56. While driving approximately 65 MPH, the vehicle stalled without warning. The vehicle was restarted after several attempts. The vehicle was taken to the dealer, but was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 48,000.
2012 INFINITI QX56 electrical problems
moderate 9 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
9
Recalls
0
Avg fix
$850
When does it fail?
Of the 9 electrical complaints filed for the 2012 INFINITI QX56, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 6 model years of INFINITI QX56 we track for electrical problems, this one carries the most owner complaints on file — 9.
No new NHTSA electrical complaint has been filed on this vehicle in over 10 years — the issue may be aging out of the active population.
What owners are reporting 3 most recent
We have had problems with the battery since we bought the qx56. SUV's completely dies after a glove box light, radio has been played for 20 to 30 minutes, car cannot be jumped by typical cables, every time we either had to have a heavy duty jump done by tow company or battery was replaced by Infiniti. Timing chain and both catalytic converters need to be replaced, with engine issues. Infiniti…
Experiencing almost identical issues to another complaint I saw that was previously filed (#10924936). Told we need to replace catalytic converters at $2,000 each. Dealership said it's a known issue with the vehicles. If it's a known issue, perhaps something should be done about it. We've also had to have the battery replaced numerous times. Had to call aaa several times to jump the vehicle.
Had electrical trouble with your 2012 INFINITI QX56?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2012 INFINITI QX56?
It's a documented issue but not catastrophic. 9 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 9 complaints filed, electrical issues most often appear around 82,007 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2012/INFINITI/QX56.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.