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Infiniti · Known Issues

2015 Infiniti Q70 Problems: 4 Known Issues

2015 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2015 Infiniti Q70 has 4 documented known issues, with 2 rated critical. The most serious are Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recalls 20V755000 and 24V470000) ($0-$0 repair) and Timing Chain Tensioner Failure ($1,500-$3,500 repair). Across all issues with published estimates, repair costs range from $200 to $3,500. DIY maintenance guides at au7o.io.

In This Article

  • Q70 Drivetrain1
  • Q70 Engine1
  • Q70 Electrical1
  • Q70 HVAC1
  • Recalls2
  • FAQ
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In This Article

  • Drivetrain1
  • Engine1
  • Electrical1
  • HVAC1
  • Recalls2
  • FAQ

All 4 Known Issues

Filter:
ALL YEARS201920182017201620152014

On the 2014-2019 Infiniti Q70, rear-wheel-drive Q70 sedans use a two-piece propeller shaft that can fatigue and break in service. When it fractures the car loses drive power immediately, and because the transmission parking pawl is no longer connected to the rear wheels the vehicle can roll away in Park unless the parking brake is set. Two separate campaigns cover this: 20V755000 for 2014 Q70 and Q70 Hybrid 2WD cars with the hybrid or VK56 powertrain (recall began February 5, 2021), and the much broader 24V470000 covering 2014-2019 Q70, Q70 Hybrid, and 2015-2019 Q70L two-wheel-drive vehicles (letters mailed August 13, 2024, Infiniti campaigns R24A5 and R24A7). AWD cars are not covered. Owners frequently report a heavy vibration in the 40-65 mph band before outright failure.

This issue also affects: Infiniti G37, Infiniti QX80, Infiniti QX70

Common Symptoms

  • Vibration that builds between 40 and 65 mph
  • Sudden total loss of drive power with the engine still running
  • Loud bang or grinding from the center tunnel
  • Vehicle rolls in Park without the parking brake applied
  • Driveline clunk on throttle transitions

How to Fix

Run the VIN through Infiniti's recall lookup or NHTSA — many Q70s fall under both campaigns, and having had the 2021 repair does not necessarily satisfy the 2024 one. The dealer replaces the driveshaft free of charge with no age or mileage limit. Treat a vibration that builds between 40 and 65 mph as the early warning rather than writing it off as tire balance; have the shaft, center support bearing, and U-joints inspected before the appointment. Until the work is done, always set the parking brake before leaving the car in Park.

Typical repair cost:$0 - $0

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2019 Infiniti Q70 3.7L VQ37VHR V6, the VQ37VHR and VQ35HR engines in the M/Q70 series develop timing chain tensioner wear, leading to chain rattle on startup and potential chain skip. The hydraulic tensioners lose their ability to maintain proper chain tension as the internal check valve wears.

This issue also affects: Infiniti FX45, Infiniti G37, Infiniti M56

Common Symptoms

  • Chain rattle on cold start lasting 1-3 seconds
  • Check engine light with cam timing codes
  • Rough idle after extended parking

How to Fix

Replace the primary timing chain tensioners and inspect the chains and guides. Use updated tensioner part numbers that feature improved check valve design. This repair requires removing the front timing cover.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Infiniti VQ37 lower primary timing-chain tensioner
    OEM13070-1MR0A

    Confirmed lower primary hydraulic-tensioner failure branch Fitment/availability: 13070-1MR0A is the lower/primary tensioner cataloged for the 3.7L VQ family and shown in the Q70 engine catalog. Confirm 2014-2019 Q70 3.7L VIN and exact fa…

    Official Infiniti Parts Store
  • Genuine Infiniti VQ37 primary timing chain
    OEM13028-JK20A

    Measured primary-chain wear or damage branch during confirmed timing repair Fitment/availability: 13028-JK20A is the primary camshaft timing chain shown for Q70 VQ37VHR; the catalog also has two 13028-JK20B secondary chains. Confirm VIN …

    InfinitiPartsDeal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$1,500 - $3,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence

On the 2014-2019 Infiniti Q70, the Bose amplifier that drives the Q70's speaker system is mounted low in the trunk, where it is directly exposed to any water that gets past the trunk lid seal, the tail lamp gaskets, or a plugged sunroof drain routed down the C-pillar. Water pools around the amplifier, corrodes the connector pins, and kills the unit. The failure presents as complete loss of sound, or as popping, crackling, and channels cutting in and out before it goes silent entirely. There is no recall or broad TSB for the amplifier itself — the amplifier is the victim, and replacing it without finding the leak simply destroys the replacement.

Common Symptoms

  • Complete loss of audio from all speakers
  • Popping, crackling, or channels cutting in and out
  • Damp carpet or musty smell in the trunk
  • Corrosion visible on amplifier connectors
  • Audio returns intermittently in dry weather

How to Fix

Before ordering an amplifier, pull the trunk liner and look for standing water, staining, or green corrosion on the amplifier connectors. Water-test the car: run a hose over the trunk lid seal, then the tail lamps, then the rear glass, checking after each. Common sources are a hardened trunk lid weatherstrip, tail lamp gaskets that have shrunk, and sunroof drain tubes that have come off their nipples or clogged. Fix the leak and dry the trunk fully, then clean or replace the corroded connectors. Only then replace the amplifier — a used unit from the same model year is a reasonable option since this is an age and water failure, not a design defect in the amplifier itself.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Infiniti rear-combination-lamp packing
    OEM26553-4AN0A

    Confirmed rear-lamp-interface leak branch Fitment/availability: 26553-4AN0A fits 2014-2019 Q70 and 2015-2019 Q70L; the OE diagram calls for two and also lists other lamp packings. Buy the quantity/position proven to leak by sectional tes…

    InfinitiPartsDeal
  • Genuine Infiniti Q70/Q70L trunk-lid weatherstrip
    OEM84830-1MA0B

    Confirmed trunk-opening weatherstrip leak branch Fitment/availability: 84830-1MA0B supersedes 84830-1MA0A and fits 2014-2019 Q70 and 2015-2019 Q70L. Replace only after a controlled water test proves the opening weatherstrip is torn, defo…

    InfinitiPartsDeal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$250 - $1,400

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

On the 2014-2019 Infiniti Q70, two related HVAC complaints run through the Q70. The first is a control-side fault where the climate system refuses manual input and stays locked in Auto, or the panel stops responding entirely after a reset — a software or HVAC control unit failure rather than anything mechanical. The second is a blend door actuator failure inside the case, which strands one side of the dual-zone system at a fixed temperature: cold air on the driver side while the passenger side blows hot, or vice versa, regardless of what the display reads. A failing actuator usually announces itself first as a repetitive clicking or ratcheting from behind the dash when the ignition is turned on or the temperature is changed. Q70L cars additionally see blower motor failures, which present as no airflow at any speed or as a growl that rises with fan speed.

Common Symptoms

  • Climate control locked in Auto and ignores manual input
  • Clicking or ratcheting from behind the dashboard
  • One side blows hot while the other blows cold
  • No airflow at any fan speed
  • Growling or whining that rises with fan speed
  • Temperature does not match the displayed setting

How to Fix

Separate the three failures before spending money. Clicking behind the dash plus a one-sided temperature split is a blend door actuator — a moderately priced part, though labor varies sharply depending on which of the several actuators has failed and how deep in the case it sits. No airflow at any speed points to the blower motor or its resistor/control module, and a growl that tracks fan speed is the blower bearing. A panel that ignores input entirely with the airflow itself still working is the control unit, and it is worth having the shop attempt a self-diagnostic mode entry and check for stored HVAC codes before condemning it. Check cabin air filter condition and battery voltage first in every case — low system voltage produces bizarre climate control behavior that mimics a failed module.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Infiniti driver-side air-mix actuator with bracket
    OEM27732-1MA0A

    Confirmed driver-side temperature-door actuator branch Fitment/availability: 27732-1MA0A is explicitly driver side and fits 2014-2019 Q70 plus 2015-2019 Q70L across listed engines.

    InfinitiPartsDeal
  • Genuine Infiniti passenger-side air-mix actuator with bracket
    OEM27732-1MA1A

    Confirmed passenger-side temperature-door actuator branch Fitment/availability: 27732-1MA1A is explicitly passenger side and fits 2014-2019 Q70 plus 2015-2019 Q70L across listed engines.

    InfinitiPartsDeal
  • Genuine Infiniti Q70/Q70L front blower assembly
    OEM27220-1MA0B superseding 27220-1MA0A

    Confirmed failed blower-motor/bearing branch Fitment/availability: 27220-1MA0A is cataloged for 2014-2019 Q70 and 2015-2019 Q70L and is superseded by 27220-1MA0B. Confirm VIN and original assembly because the catalog also lists 27200 pro…

    InfinitiPartsDeal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$200 - $1,200

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026
NHTSA Recalls2 recalls

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

Campaign #19V65400012/09/2019

POWER TRAIN:DRIVELINE:DRIVESHAFT

Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft can fatigue and break.

Campaign #24V47000021/06/2024

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

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Other Infiniti Models

Infiniti G3723Infiniti FX3520Infiniti Q5011Infiniti G3511Infiniti QX508Infiniti QX558

Frequently Asked Questions

What are the most common Infiniti Q70 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2015 Infiniti Q70 has 4 documented issues. The most frequently reported are: Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recalls 20V755000 and 24V470000), Timing Chain Tensioner Failure, Bose Amplifier Failure from Trunk Water Intrusion. Of these, 2 are rated critical and should be addressed promptly.

Is the Infiniti Q70 reliable?

The 2015 Infiniti Q70 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recalls 20V755000 and 24V470000) and Timing Chain Tensioner Failure. 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 Q70 problems?

Repair costs for known Infiniti Q70 issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recalls 20V755000 and 24V470000), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2014-2019 Infiniti Q70 Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recalls 20V755000 and 24V470000)?

Rear-wheel-drive Q70 sedans use a two-piece propeller shaft that can fatigue and break in service. When it fractures the car loses drive power immediately, and because the transmission parking pawl is no longer connected to the rear wheels the vehicle can roll away in Park unless… Repairs typically run $0-$0. Severity: high.

What is the 2014-2019 Infiniti Q70 Timing Chain Tensioner Failure?

The VQ37VHR and VQ35HR engines in the M/Q70 series develop timing chain tensioner wear, leading to chain rattle on startup and potential chain skip. The hydraulic tensioners lose their ability to maintain proper chain tension as the internal check valve wears. Repairs typically run $1,500-$3,500. Severity: high.

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.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

What is the 2014-2019 Infiniti Q70 Bose Amplifier Failure from Trunk Water Intrusion?

The Bose amplifier that drives the Q70's speaker system is mounted low in the trunk, where it is directly exposed to any water that gets past the trunk lid seal, the tail lamp gaskets, or a plugged sunroof drain routed down the C-pillar. Water pools around the amplifier, corrodes… Repairs typically run $250-$1,400. Severity: medium.

What is the 2014-2019 Infiniti Q70 Climate Control Stuck in Auto and Blend Door Actuator Failure?

Two related HVAC complaints run through the Q70. The first is a control-side fault where the climate system refuses manual input and stays locked in Auto, or the panel stops responding entirely after a reset — a software or HVAC control unit failure rather than anything mechanica… Repairs typically run $200-$1,200. Severity: medium.