According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003-2008 Infiniti G35 has 11 documented known issues, with 6 rated critical. The most serious are Crank and Cam Position Sensor Solder Failure Causing Stall and No-Start (Recall 03V455000) ($0-$600 repair), Belt Tension Sensor Harness Wear Prevents Airbag Deployment (Recall 10V175000) ($0-$0 repair), Fuel Pump Outlet Hose Improperly Attached Causing Stall and Fire Risk (Recall 02V245000) ($0-$0 repair), Steering Wheel Lock Malfunction ($300-$900 repair), OCS Varistor Defect Suppresses Passenger Airbag (Recall 08V521000) ($0-$0 repair) and Fuel Filler Hose Cracking Causing Fuel Leak While Refueling (Recall 05V555000) ($0-$450 repair). Across all issues with published estimates, repair costs range from $60 to $3,000. DIY maintenance guides at au7o.io.
NISSAN IS RECALLING 204,361 MY 2007-2008 ALTIMA, ALTIMA HYBRID, 350Z, 350Z ROADSTER, MY 2008 ALTIMA COUPE, ROGUE, MY 2009 MURANO, AND INFINITI MY 2007-2008 G35 SEDAN, MY 2008 G37 COUPE AND EX35 PASSENGER VEHICLES EQUIPPED WITH CONTINENTAL AUTOMOTIVE SYSTEMS' OCCUPANT CLASSIFICATION SYSTEM (OCS) CONTROL UNITS. A VARISTOR IN THE OCS CONTROL UNIT LOCATED IN THE PASSENGER SEAT CUSHION MAY HAVE BEEN MANUFACTURED OUT OF SPECIFICATION. UNDER CERTAIN CONDITIONS, THIS COULD CAUSE AN INTERRUPTION OF SIGNAL BETWEEN THE OCS AND THE AIR BAG CONTROL UNIT (ACU).
Campaign #08V52100007/10/2008
AIR BAGS
NISSAN IS RECALLING CERTAIN MODEL YEAR 2005 THROUGH 2007 INFINITI G35 SEDANS MANUFACTURED FROM MARCH 29, 2004 THROUGH AUGUST 25, 2006 AND INFINITI G35 COUPES MANUFACTURED FROM APRIL 1, 2004 THROUGH MAY 30, 2007. THE WIRE HARNESS CONNECTING THE BELT TENSION SENSOR (BTS) AND THE OCCUPANT DETECTION SENSOR (ODS) CONTROL UNIT UNDER THE FRONT PASSENGER SEAT CAN EXPERIENCE RELATIVE MOVEMENT WHICH CAN CAUSE WEAR AND OXIDIZATION OF THE TERMINALS AND MAY CAUSE INTERRUPTION OF THE SIGNAL.
Campaign #10V17500027/04/2010
EXTERIOR LIGHTING:HEADLIGHTS
CERTAIN VEHICLES FAIL TO COMPLY WITH THE "VERTICAL GRADIENT" AND "HEADLAMP PHOTOMETRIC VALUES" REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, 'LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.'
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003-2008 Infiniti G35 has 11 documented issues. The most frequently reported are: Crank and Cam Position Sensor Solder Failure Causing Stall and No-Start (Recall 03V455000), Belt Tension Sensor Harness Wear Prevents Airbag Deployment (Recall 10V175000), Fuel Pump Outlet Hose Improperly Attached Causing Stall and Fire Risk (Recall 02V245000). Of these, 6 are rated critical and should be addressed promptly.
Is the Infiniti G35 reliable?
The 2003-2008 Infiniti G35 has 11 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 6 issues are rated critical: Crank and Cam Position Sensor Solder Failure Causing Stall and No-Start (Recall 03V455000) and Belt Tension Sensor Harness Wear Prevents Airbag Deployment (Recall 10V175000) and Fuel Pump Outlet Hose Improperly Attached Causing Stall and Fire Risk (Recall 02V245000) and Steering Wheel Lock Malfunction and OCS Varistor Defect Suppresses Passenger Airbag (Recall 08V521000) and Fuel Filler Hose Cracking Causing Fuel Leak While Refueling (Recall 05V555000). 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 G35 problems?
Repair costs for known Infiniti G35 issues range from $0 to $3,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Crank and Cam Position Sensor Solder Failure Causing Stall and No-Start (Recall 03V455000), typically costs $0-$600 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year Infiniti G35 is the most reliable?
Reliability varies across model years of the Infiniti G35. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2003-2008 Infiniti G35 with 11 documented issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports.
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.
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The wire harness linking the belt tension sensor to the occupant detection sensor control unit under the front passenger seat is subject to relative movement as the seat is adjusted and as occupants shift. Over time that movement wears and oxidizes the terminals, interrupting the signal. With the signal lost the system cannot confirm occupant status and the airbag may not deploy in a crash. NHTSA campaign 10V175000 covers 2005-2007 G35 sedans built March 29, 2004 through August 25, 2006 and G35 coupes built April 1, 2004 through May 30, 2007. The recall began July 12, 2010.
Common Symptoms
Airbag warning light that comes and goes with passenger seat movement
Passenger airbag status indicator behaving erratically
SRS light illuminated with occupant detection codes
Airbag light triggered by passenger shifting position
How to Fix
Have the dealer perform the repair under recall 10V175000 free of charge — this one is build-date limited, so confirm eligibility by VIN rather than model year alone. An airbag warning light that comes and goes as the passenger seat is slid fore and aft is the signature of this fault and distinguishes it from a failed OCS control unit, which tends to fail in a fixed state. Note that this campaign and 08V521000 cover different components on overlapping cars, so a G35 may need both.
A varistor inside the Occupant Classification System control unit, which sits in the front passenger seat cushion, was manufactured out of specification. Under certain conditions it interrupts the signal between the OCS and the airbag control unit. The airbag control unit interprets the lost signal by suppressing the passenger frontal airbag, so it will not deploy in a crash even with an adult properly seated. NHTSA campaign 08V521000 covers 2007-2008 G35 sedans along with the 2008 G37 Coupe, EX35, and a group of Nissan models — 204,361 vehicles in total. The recall began November 4, 2008.
Common Symptoms
Passenger airbag status light reads OFF with an adult seated
Airbag status indicator flickers between ON and OFF
Airbag warning light illuminated on the cluster
Seat classified as empty while occupied
How to Fix
Have the dealer test the OCS-to-ACU signal with the special tool called for by recall 08V521000 and replace the passenger seat cushion containing the OCS hardware if it fails, free of charge. Watch the passenger airbag status indicator on the console: if it shows OFF with a normally seated adult, the system is suppressing the bag right now. Remove aftermarket seat covers and anything stored under the passenger seat before diagnosing, since both interfere with the sensor mat and produce the same indication. Never bypass or unplug the OCS to clear the warning light — that removes the crash logic in both directions.
On early-build cars the fuel hose connection at the outlet of the fuel pump, on top of the fuel tank, may not have been properly seated during assembly. The connection can work loose while driving or during a start attempt. If it separates while driving the engine stops from fuel starvation; in either case fuel discharges from the pump outlet inside the tank cavity, and with an external ignition source present that becomes a fire. NHTSA campaign 02V245000 covers the defect, with owner notification beginning October 7, 2002.
Common Symptoms
Engine stalls suddenly from fuel starvation
Raw fuel smell near the rear seat or trunk
Extended cranking or failure to start
Loss of fuel pressure at the rail
How to Fix
Have the dealer inspect and correctly attach the fuel hose to the fuel pump under recall 02V245000, free of charge. On a car this old the recall was almost certainly performed, but verify by VIN rather than assume — and if the fuel pump or sending unit has been replaced since by an independent shop, the same connection is worth re-checking, because it is easy to leave incompletely seated. A raw fuel smell around the rear seat or trunk with no external leak points directly at this connection.
The rubber fuel filler hose that runs from the filler neck to the tank can crack with age and exposure, letting raw fuel escape during refueling. Because the leak occurs at the pump with the nozzle running, any ignition source nearby creates a fire risk. NHTSA campaign 05V555000 covers the defect across a group of Nissan and Infiniti passenger cars and SUVs; the Infiniti portion of the recall began March 13, 2006.
Fuel pump nozzle clicks off repeatedly before the tank is full
Fuel stains on the underbody near the filler neck
Check engine light with EVAP leak codes
How to Fix
Have the dealer replace the fuel filler hose under recall 05V555000, free of charge. Independent of the recall, a strong fuel smell during or right after refueling, fuel visible on the ground behind the right rear wheel while filling, or a pump that repeatedly clicks off before the tank is full all point to the filler hose or the vent hose alongside it. Do not keep refueling a car that leaks at the pump. A persistent fuel odor with no visible leak and an EVAP code is a different fault — usually the vent or purge valve — so confirm which one you have before ordering parts.
The circuit boards inside the crankshaft and camshaft position sensors were built with improper solder joints — flux residue left during manufacturing accelerated heat-stress deformation of the solder. As the joint degrades the sensor signal drops out, most often once the engine bay is hot. The result is a Service Engine Soon light, a no-start, reduced engine power, or the engine simply cutting out without warning while driving. NHTSA campaign 03V455000 covers the defect and explicitly supersedes the earlier 01V357 campaign, because the replacement sensors installed under that first recall were themselves affected. Owner notification began December 22, 2003.
Engine cranks but will not start when hot, starts fine when cool
Engine stalls without warning while driving
Service Engine Soon light with crank or cam sensor codes
Reduced engine power or limp mode
Intermittent rough running that worsens with heat
How to Fix
Verify with Infiniti by VIN that 03V455000 was performed, not merely the earlier 01V357 — cars repaired under the first campaign received defective replacement parts and need the work done again. Dealers replace the crank position sensor, camshaft position sensor(s), and in some cases the variable timing control sensors. On a car well past the recall window, the classic signature is a hot-restart failure: the engine cranks but will not fire after a short stop on a warm day, then starts fine once it cools. Do not throw a fuel pump at that symptom before testing the crank sensor signal — this is the single most common cause of the complaint on this engine.
The VQ35DE engine in the G35 is known to consume excessive oil, sometimes burning 1 quart every 1,000-2,000 miles. This is typically caused by worn valve stem seals and piston rings that allow oil to enter the combustion chamber.
Replace valve stem seals and inspect piston rings. In severe cases, a short block replacement may be necessary. Use manufacturer-recommended 5W-30 oil and monitor consumption between changes.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Infiniti valve-stem seal 13207-84A00
OEM13207-84A00
Confirm VIN, engine, seal location and required quantity from the service diagram before ordering; do not buy
OEM 2007 G35 Coupe 6MT standard-size piston-ring set
OEM12033-JP00A
Narrow six-piston ring-set branch only after teardown proves rings and measurements accept standard size Fitment/availability: Fits the 2007 Infiniti G35 Coupe with VQ35DE Rev-Up and manual transmission as stated on the product page.
Mobil 1 Extended Performance 5W-30 full-synthetic motor oil, 5 qt
OEMMobil 1 Extended Performance 5W-30 — 5 qt
Correct-viscosity maintenance and top-off supply while monitoring consumption Fitment/availability: Use only where the exact G35 owner manual permits 5W-30 and choose the current API specification. One 5-quart jug may not equal the compl…
The electronic steering wheel lock mechanism can malfunction, preventing the car from starting or causing intermittent no-start conditions. The steering lock actuator motor fails internally, triggering a security fault.
Replace the steering lock actuator or have the dealer reprogram the BCM. Some owners bypass the lock mechanism entirely, though this may affect resale value. A TSB was issued for certain model years.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Infiniti V35 steering-lock set D8700-CG027
OEMD8700-CG027
Exact V35 Intelligent-Key/automatic configuration branch after lock failure is confirmed Fitment/availability: The live 2007 G35 catalog lists D8700-CG027 for specific V35 Coupe/Sedan automatic and equipment combinations.
The dashboard topper material breaks down under sustained sun and heat, going soft and tacky to the touch before developing shiny patches, cracks, and chipping — typically first around the defroster vents and the instrument binnacle. Beyond the cosmetic damage the degraded surface becomes reflective, throwing glare onto the windshield that can be severe enough to obscure the driver's forward view in low sun. The defect is well documented across 2006-2008 G35 and M35 and 2008-2009 G37 vehicles and was the subject of class-action litigation against Nissan. Notably, Nissan extended warranty coverage for melting dashboards on some vehicles but did not do so for these G35, M35, and G37 models, so most owners face this as an out-of-pocket repair.
Common Symptoms
Dashboard surface soft, tacky, or sticky to the touch
Shiny reflective patches causing windshield glare
Cracks and chipping around the defroster vents
Discoloration or bubbling of the dash top
Glare that obscures forward vision in low sun
How to Fix
Do not expect goodwill coverage, though it is worth one call to Infiniti Consumer Affairs with the VIN since dealer discretion has occasionally applied. Practical options in ascending cost: a fitted dash cover or carpet-style mat, which hides the surface and kills the glare for well under a hundred dollars and is what most owners settle on; a vinyl or leather re-wrap by an upholstery shop; or full dashboard replacement, which is expensive largely because the labor requires removing the steering column, HVAC ducting, and often the windshield. Avoid silicone-based interior protectants on a dash already going soft — they make the tackiness worse. A windshield sunshade whenever the car is parked slows further degradation on a dash that has not yet failed.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
2007 Coupe or Sedan glare-control branch using body and speaker-cutout selection Fitment/availability: The product page separates 2007 G35 Coupe, Sedan with center-speaker cut-out and Sedan without it. Select the physical dash configurat…
OEMCarCoverPlanet custom dash cover — 2008 Infiniti G35 Sedan
2008 G35 Sedan glare-control branch with the correct center-speaker cut-out Fitment/availability: The 2008 G35 page lists Sedan only and requires selecting with or without the center-speaker cut-out. There is no 2008 G35 Coupe branch; a …
Certain G35 headlamp assemblies do not meet the vertical gradient and headlamp photometric value requirements of Federal Motor Vehicle Safety Standard 108. In practice the beam cutoff is poorly defined and light output falls outside the required pattern, so the roadway is inadequately lit and oncoming drivers may be glared. NHTSA campaign 06V394000 covers the defect, with the recall expected to begin on or about April 16, 2007. The remedy is replacement of the headlamp assemblies, not an aim adjustment.
Common Symptoms
Poor or uneven road illumination at night
Ill-defined or missing beam cutoff line
Oncoming drivers flashing high beams
Dark spots or hot spots in the beam pattern
How to Fix
Have the dealer replace the headlamp assemblies under recall 06V394000, free of charge. Do not accept a headlamp aim adjustment as the fix — the parts themselves are out of specification and re-aiming a non-compliant lamp cannot bring it into compliance. Separately, on a G35 of this age the far more common complaint is simply hazed and yellowed polycarbonate lenses scattering the beam, which is an unrelated wear issue: restore or replace the lens before concluding the assembly is defective. Retrofitting LED or HID bulbs into these halogen projectors makes the beam pattern worse, not better, and is a common owner mistake here.
The sunroof tray is designed to collect water and route it through four drain tubes running down the A- and C-pillars. Debris packs the drain nipples at the corners of the tray, the tray overflows, and water spills into the headliner and down the pillars into the cabin. Owners find soaked front or rear floor carpet, water dripping from the headliner or map light area, and a persistent musty smell. Because the water tracks down the pillars it reaches wiring and body modules, which is why this shows up as electrical symptoms — including door lock actuators cycling on their own — rather than as an obvious leak. It is the single most common source of interior water intrusion on this chassis.
Common Symptoms
Wet or damp carpet in the footwells
Water dripping from the headliner or map light area
Persistent musty or mildew smell in the cabin
Door locks cycling on their own or intermittent electrical faults
Water stains on the A-pillar or C-pillar trim
Windows fogging that will not clear
How to Fix
Open the sunroof and locate the drain openings at the four corners of the tray. Clear them with low-pressure compressed air or a length of weed-trimmer line worked in gently — never a stiff wire or a drain snake, which punches through the tube and dumps water directly into the pillar, converting a clogged drain into a permanent leak. Pour a small amount of water into the tray and confirm it exits behind each wheel. Fix this before chasing any electrical gremlin on a car with damp carpet, and pull the carpet and padding up to dry them fully, since trapped moisture corrodes the connectors and modules under the seats and in the kick panels. A leak that persists with clear drains is usually a failed sunroof seal or a detached drain tube behind the pillar trim.
The power window regulators in the G35 are prone to failure, causing windows to fall into the door or operate slowly. The plastic guide clips and cable mechanism wear out, especially in hot climates.
Replace the window regulator assembly. Aftermarket regulators are available at lower cost than OEM. The repair involves removing the door panel and disconnecting the window motor.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Infiniti 80721-AM811 front-left regulator
OEM80721-AM811
Do not use for the V35 Sedan or 2007 V36 Sedan, and verify VIN/production date before ordering.
2003-2006 G35 Sedan front-left regulator-only branch Fitment/availability: V35 four-door Sedan, driver side; match the superseded OE number and production date. Not for the two-door Coupe or 2007 V36 Sedan, and the motor is a separate di…
2003-2006 G35 Sedan front-right regulator-only branch Fitment/availability: V35 four-door Sedan, passenger side; replaces 80720-AT30A/CL00A/AR000. Not for the Coupe or 2007 V36 Sedan and does not automatically include a failed motor.
Do not mistake catalog references under Coupe diagrams for a Coupe rear door; the physical application is the four-door Sedan. Confirm VIN and diagnose the separate
ZF SERVICE IS RECALL CERTAIN CLUTCH KIT ASSEMBLIES, PART NUMBER SX: K70358-01, SHIPPED TO WHOLESALERS AS SERVICE PARTS BETWEEN SEPTEMBER 1, 2010, AND MARCH 8, 2011. THESE SERVICE PARTS ARE INTENDED FOR USE ON MODEL YEAR 2003-2006 NISSAN 350Z AND INFINITI G35 VEHICLES. THE SX: K70358-01 CLUTCH KIT CONTAINS AN OVERSIZED CLUTCH DISC.
Campaign #11E02400024/06/2011
EXTERIOR LIGHTING
CERTAIN AAI MOTORSPORTS COMBINATION LAMPS SOLD AS REPLACEMENT LAMPS FOR USE ON THE ABOVE LIST PASSENGER VEHICLES. COMBINATION LAMPS NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT."
What is the 2003-2004 Infiniti G35 Crank and Cam Position Sensor Solder Failure Causing Stall and No-Start (Recall 03V455000)?
The circuit boards inside the crankshaft and camshaft position sensors were built with improper solder joints — flux residue left during manufacturing accelerated heat-stress deformation of the solder. As the joint degrades the sensor signal drops out, most often once the engine… Repairs typically run $0-$600. Severity: high.
What is the 2005-2007 Infiniti G35 Belt Tension Sensor Harness Wear Prevents Airbag Deployment (Recall 10V175000)?
The wire harness linking the belt tension sensor to the occupant detection sensor control unit under the front passenger seat is subject to relative movement as the seat is adjusted and as occupants shift. Over time that movement wears and oxidizes the terminals, interrupting the… Repairs typically run $0-$0. Severity: high.
What is the 2003 Infiniti G35 Fuel Pump Outlet Hose Improperly Attached Causing Stall and Fire Risk (Recall 02V245000)?
On early-build cars the fuel hose connection at the outlet of the fuel pump, on top of the fuel tank, may not have been properly seated during assembly. The connection can work loose while driving or during a start attempt. If it separates while driving the engine stops from fuel… Repairs typically run $0-$0. Severity: high.
What is the 2003-2007 Infiniti G35 Steering Wheel Lock Malfunction?
The electronic steering wheel lock mechanism can malfunction, preventing the car from starting or causing intermittent no-start conditions. The steering lock actuator motor fails internally, triggering a security fault. Repairs typically run $300-$900. Severity: high.
What is the 2007-2008 Infiniti G35 OCS Varistor Defect Suppresses Passenger Airbag (Recall 08V521000)?
A varistor inside the Occupant Classification System control unit, which sits in the front passenger seat cushion, was manufactured out of specification. Under certain conditions it interrupts the signal between the OCS and the airbag control unit. The airbag control unit interpr… Repairs typically run $0-$0. Severity: high.
What is the 2003-2006 Infiniti G35 Fuel Filler Hose Cracking Causing Fuel Leak While Refueling (Recall 05V555000)?
The rubber fuel filler hose that runs from the filler neck to the tank can crack with age and exposure, letting raw fuel escape during refueling. Because the leak occurs at the pump with the nozzle running, any ignition source nearby creates a fire risk. NHTSA campaign 05V555000… Repairs typically run $0-$450. Severity: high.
What is the 2006-2008 Infiniti G35 Dashboard Melts, Turns Sticky, and Cracks Causing Windshield Glare?
The dashboard topper material breaks down under sustained sun and heat, going soft and tacky to the touch before developing shiny patches, cracks, and chipping — typically first around the defroster vents and the instrument binnacle. Beyond the cosmetic damage the degraded surfac… Repairs typically run $60-$2,500. Severity: medium.
What is the 2003-2007 Infiniti G35 VQ35DE Oil Consumption?
The VQ35DE engine in the G35 is known to consume excessive oil, sometimes burning 1 quart every 1,000-2,000 miles. This is typically caused by worn valve stem seals and piston rings that allow oil to enter the combustion chamber. Repairs typically run $800-$3,000. Severity: medium.
What is the 2006-2007 Infiniti G35 Headlamp Assemblies Fail FMVSS 108 Photometric Requirements (Recall 06V394000)?
Certain G35 headlamp assemblies do not meet the vertical gradient and headlamp photometric value requirements of Federal Motor Vehicle Safety Standard 108. In practice the beam cutoff is poorly defined and light output falls outside the required pattern, so the roadway is inadequ… Repairs typically run $0-$0. Severity: medium.
What is the 2003-2008 Infiniti G35 Clogged Sunroof Drains Causing Cabin Water Leaks and Electrical Faults?
The sunroof tray is designed to collect water and route it through four drain tubes running down the A- and C-pillars. Debris packs the drain nipples at the corners of the tray, the tray overflows, and water spills into the headliner and down the pillars into the cabin. Owners fi… Repairs typically run $0-$900. Severity: medium.
What is the 2003-2007 Infiniti G35 Power Window Regulator Failure?
The power window regulators in the G35 are prone to failure, causing windows to fall into the door or operate slowly. The plastic guide clips and cable mechanism wear out, especially in hot climates. Repairs typically run $150-$400. Severity: low.
