2015 Infiniti QX50 Problems: 4 Known Issues
2015 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated October 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2015 Infiniti QX50 has 4 documented known issues, with 2 rated critical. The most serious are Steering Wheel Lock / Ignition No-Start from Electronic Steering Lock Failure ($600-$1,800 repair) and Timing Chain / VVEL Rattle and Front Timing Cover Oil Leaks on VQ37VHR ($900-$2,800 repair). Across all issues with published estimates, repair costs range from $150 to $2,800. DIY maintenance guides at au7o.io.
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All 4 Known Issues
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Frequently Asked Questions
What are the most common Infiniti QX50 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2015 Infiniti QX50 has 4 documented issues. The most frequently reported are: Steering Wheel Lock / Ignition No-Start from Electronic Steering Lock Failure, Timing Chain / VVEL Rattle and Front Timing Cover Oil Leaks on VQ37VHR, Sunroof Drain / HVAC Evaporator Water Intrusion Causing Wet Carpets and Electrical Faults. Of these, 2 are rated critical and should be addressed promptly.
Is the Infiniti QX50 reliable?
The 2015 Infiniti QX50 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Steering Wheel Lock / Ignition No-Start from Electronic Steering Lock Failure and Timing Chain / VVEL Rattle and Front Timing Cover Oil Leaks on VQ37VHR. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Infiniti QX50 problems?
Repair costs for known Infiniti QX50 issues range from $150 to $2,800, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Steering Wheel Lock / Ignition No-Start from Electronic Steering Lock Failure, typically costs $600-$1,800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2014-2016 Infiniti QX50 Steering Wheel Lock / Ignition No-Start from Electronic Steering Lock Failure?
Infiniti/Nissan vehicles using the electronic steering column lock system have a well-documented failure mode where the vehicle will not recognize the lock state, leaving the car unable to start even though the battery and key fob appear normal. The issue is widely discussed acro… Repairs typically run $600-$1,800. Severity: high.
What is the 2014-2018 Infiniti QX50 Timing Chain / VVEL Rattle and Front Timing Cover Oil Leaks on VQ37VHR?
Owners of the 3.7L VQ37VHR-equipped QX50 report a metallic rattle at cold start and oil seepage from the front timing cover area. On this engine, timing chain guide/tensioner wear and RTV-sealed front cover leaks can develop with age and heat cycling; because the VVEL/timing comp… Repairs typically run $900-$2,800. Severity: high.
What is the 2014-2018 Infiniti QX50 Sunroof Drain / HVAC Evaporator Water Intrusion Causing Wet Carpets and Electrical Faults?
A recurring complaint on Infiniti crossovers and sedans of this era is water entering the cabin from clogged or poorly routed sunroof drains, and in some cases from HVAC evaporator drain issues. QX50 owners report soaked front footwells, musty odor, fogging windows, and intermitt… Repairs typically run $150-$1,400. Severity: medium.
What is the 2014-2018 Infiniti QX50 Premature Front Lower Control Arm / Compression Rod Bushing Wear Causing Clunks and Tire Wear?
The FM-platform suspension used under the QX50 is known for front lower control arm and compression rod bushing wear, especially on rough roads or vehicles with larger wheel packages. Owners report clunking over bumps, vague steering, braking shimmy, and uneven front tire wear. O… Repairs typically run $500-$1,600. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.