AI Damage2019 Infiniti QX50: common problems
Owners of the 2019 Infiniti QX50 filed 145 complaints with NHTSA, most often about engine and engine and cooling. The maker issued 106 service bulletins for this year. We found 1 repair videos on YouTube. Details by component below, with sources.
Key figures
- Owner complaints
- 145
- involving a crash
- 5
- Technical service bulletins (TSB)
- 106
- YouTube repair videos
- 1
What fails most often
- 1 Engine 39% of all complaints
- 2 Engine and cooling 22% of all complaints
- 3 Electrical system 12% of all complaints
- 4 Powertrain 12% of all complaints
- 5 Forward collision avoidance 12% of all complaints
- 6 Service brakes 8% of all complaints
- 7 Vehicle speed control 5% of all complaints
- 8 Seats 3% of all complaints
- Engine: 57 complaints (39% of all), 3 of them with a crash reported by the owner; manufacturer bulletins for this component: 1.
- Engine and cooling: 32 complaints (22% of all); manufacturer bulletins for this component: 7.
- Electrical system: 17 complaints (12% of all); manufacturer bulletins for this component: 43.
- Powertrain: 17 complaints (12% of all), 2 of them with a crash reported by the owner; manufacturer bulletins for this component: 18.
- Forward collision avoidance: 17 complaints (12% of all); manufacturer bulletins for this component: 6.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 2 L · petrol · turbo · 4 cylnamed in 3 complaints
- CVTnamed in 2 complaints
Drive: FWD, AWD
Symptoms owners describe
How many of the 145 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 57 | 3 | 1 |
| Engine and cooling | 32 | 0 | 7 |
| Electrical system | 17 | 0 | 43 |
| Powertrain | 17 | 2 | 18 |
| Forward collision avoidance | 17 | 0 | 6 |
| Service brakes | 11 | 2 | 1 |
| Vehicle speed control | 7 | 1 | 0 |
| Seats | 5 | 0 | 2 |
| Fuel/propulsion system | 5 | 0 | 0 |
| Structure | 3 | 1 | 13 |
| Steering | 3 | 0 | 0 |
| Visibility | 2 | 0 | 12 |
| Backover prevention | 2 | 0 | 0 |
| Suspension | 2 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The sudden power loss caused a single-vehicle accident. No injuries. The vehicle had recall 25V437 service performed at [dealer] on 08/27/2026. The check engine light was documented as ON during that visit.
The contact stated that the air bags did not deploy in her daughter's vehicle. The driver did not sustain any injuries. A police report was filed. The vehicle was damaged but not totaled. The vehicle was towed to a repair shop. The manufacturer and the dealer were not called. The vehicle was not repaired.
The forward emergency breaking(feb) with pedestrian detection and predictive forward collision warning(pfcw) did not activate when I was starting up from a 4 way stop sign intersection on a city street. My 2019 qx50 was in motion when it crashed into another vehicle on the passenger door and wheel well.
The check-engine light began flashing, the engine started shaking and making a knocking noise, and the vehicle would not accelerate beyond approximately 20 mph despite pressing the accelerator. This unexpected loss of power created a serious safety concern because I could no longer maintain normal driving speeds.
While driving on the highway the vehicle would not accelerate and the oil pressure light came on. After pulling over we noticed a slight burning smell and cut the engine. After a few minutes we tried to start the car again and it would not start.
The contact stated that while driving 70 MPH, the vehicle stalled; however, the contact was able to pull off the highway safely to a safe place. There was an abnormal burning odor coming from the vehicle. The oil pressure warning light was illuminated.
The contact stated that the vehicle was shaking erratically. In addition, the oil light and check engine warning lights were illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure.
Bearing failure could cause engine damage or loss of power while driving, increasing crash risk. Warning lights before inspection: UNKNOWN. The exact composition of the debris is UNKNOWN pending testing.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 438 of 2,102 model years in the NHTSA data (top 21% most complained about).
On average one model year of the QX50 has 28 complaints (10 years in the data). This year has 145, above average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- ROARING NOISE FROM THE ENGINE COOLING FAN ASSEMBLY AND THE A/C IS NOT COOLING IF YOU CONFIRM A roaring…
ROARING NOISE FROM THE ENGINE COOLING FAN ASSEMBLY AND THE A/C IS NOT COOLING IF YOU CONFIRM A roaring noise from the engine cooling fan assembly (engine fan on high not cycling) is present, and the Air Conditioning…
- CERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision damage or other…
CERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision damage or other vehicle repair, a replacement “Certification Label” or “VIN Plate/Label” may be needed. HINT: Certification Label =…
- TELEMATICS SERVICE INFORMATION See ITB19-029 for models built after those listed above for a different…
TELEMATICS SERVICE INFORMATION See ITB19-029 for models built after those listed above for a different Service Procedure. SERVICE INFORMATION The Applied Vehicles are equipped with a wireless communication device…
- IF YOU CONFIRM The client states that either the rear hatch is inoperative, or the rear hatch closes after…
IF YOU CONFIRM The client states that either the rear hatch is inoperative, or the rear hatch closes after opening only a small amount, AND DTC B2426-23 for “SPINDLE SENSOR LH” and/or DTC B2427-23 for “SPINDLE SENSOR…
- AEB WARNING LIGHT IS ON WITH WARNING MESSAGES DISPLAYED ON COMBINATION METER APPLIED VEHICLES
2015-2024 Q50 (V37) 2015-2018 Q50 Hybrid (HV37) 2017-2022 Q60 (CV37) 2015-2019 Q70 (Y51) 2015-2018 Q70 Hybrid (HY51) 2019-2024 QX50 (J55) 2022-2024 QX55 (FJ55) 2015-2021 QX60 (L50) 2022-2024 QX60 (L51) 2015-2019 QX60…
- DTC B00A0-00 STOREIF YOU CONFIRM DTC B00A0-00 (OCCUPANT DETECTION SENSOR UNIT) is stored, AND OCS zero…
DTC B00A0-00 STOREIF YOU CONFIRM DTC B00A0-00 (OCCUPANT DETECTION SENSOR UNIT) is stored, AND OCS zero point reset cannot be performed, (continued on the next page)D
- DTC C1A17-49 STORED IN LASER/RADAR This bulletin has been amended
See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- INTELLIGENT 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.
- CAN COMMUNICATION – NETWORK DIAGNOSTIC FLOW CHART This bulletin has been amended
See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- CAN COMMUNICATION CODES – DIAGNOSTIC TIPS AND GUIDELINES This bulletin has been amended
See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- AUTOMATIC EMERGENCY BRAKING WARNING LIGHT BLINKING This bulletin has been amended
See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- WINDOW GLASS WARRANTY INFORMATION This bulletin has been amended
See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NHTSA lists 106 bulletins for this year; the 12 newest are shown here.
Repair videos
We do not copy videos: these are YouTube links credited to their authors. Amounts are as stated by the author and not verified by us.
Other years of this model
Questions and answers
What are the most common problems with the 2019 Infiniti QX50?
Owner complaints to NHTSA most often mention: engine, engine and cooling, electrical system. Total complaints: 145. The most frequent symptoms in complaint texts: warning lights, check engine (30%), engine failure or replacement (17%), knocking, grinding or other noise (14%).
How many service bulletins (TSB) were issued for the 2019 Infiniti QX50?
NHTSA lists 106 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2019 Infiniti QX50 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2019 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.