2007 Infiniti G35 Problems

What owners report

Owners of the 2007 Infiniti G35 most often report problems related to the passenger-seat occupant classification sensor, which can turn off the front passenger air bag and trigger a flashing or steady air bag warning light; many note their vehicle's identification number was not covered by the related campaigns. Reports also cover engine stalling or hesitation, clutch pedal and hydraulic problems on manual-transmission cars, a sticky or melting dashboard, and assorted electrical and window faults. Reports arrive at a wide mileage range, from cars barely out of warranty to ones past 150,000 miles.

1. 1
   Air bags

   Passenger air bag off / OCS sensor warning light

   • 23 complaints (20%)
   • median 82,000 mi at 10.2 yrs old (20 state mileage)
   • filed 2008–2025

   Owners describe the air bag warning light flashing or the passenger "air bag off" indicator staying lit even with an adult in the front passenger seat. Several say the dealer traced it to the occupant classification system control unit or the passenger seat belt/buckle assembly and quoted a multi-thousand-dollar repair; others say the dealer could not reproduce or diagnose it, or said the system was operating as designed. Numerous complaints state their vehicle was not included in the related recalls. A few describe the passenger air bag deploying without a crash or failing to deploy in a crash. Reported from roughly 1,000 to 174,000 miles, with many between about 40,000 and 140,000 miles; often intermittent and noticed when a passenger sits in the front seat.

   Recall 08V521000Recall 10V1750001 related service bulletin

   What to check: With the ignition on and an adult seated in the front passenger seat, confirm the air bag status light reads on rather than off; scan for occupant classification system codes and ask whether the 08V521000 software remedy or the 10V175000 harness service was performed on this vehicle.

   2 excerpts from owner complaints in NHTSA records

   “On quite a few occasions when my wife or grown daughter is sitting in the front passenger seat the airbag off light is illuminated to indicate that they are not being properly protected by the airbag system. Every time I look to make sure they aren't sitting oddly in a way that would give a false reading to the sensor and they aren't. …”

   NHTSA complaint #10598577, filed 2014-06, 40,000 miles

   “When my most frequent passenger of 140 lbs sits in the passenger seat the airbag off light comes on intermittently. I have taken this into the dealer about 6 times and they have not been able to recreate the issue and have not been able to find any issue when running tests on the computer. This makes me very uneasy as an accident can happen at anytime and I am risking the life of my passenger.”

   NHTSA complaint #10308720, filed 2010-02, 1,000 miles
2. 2
   Engine

   Engine stalling or hesitation from a stop

   • 15 complaints (13%)
   • median 92,500 mi at 7.8 yrs old (10 state mileage)
   • filed 2007–2022

   Complaints describe the engine quitting without warning while driving or hesitating and nearly stalling when pulling away from a stop, sometimes with a loss of power steering at the same time. Some owners report diagnostics pointing to crankshaft or camshaft position sensors, and some dealers recommended reprogramming the ECM and TCM or replacing the engine; others found no stored codes and no clear cause. Spread widely, from a few thousand miles to about 200,000 miles, with many reports around 80,000 to 130,000 miles.

   2 related service bulletins

   What to check: Ask whether the ECM/TCM have been reprogrammed and whether crankshaft or camshaft position sensors have been replaced; test-drive from several stops and on a hill, and scan for stored codes.

   2 excerpts from owner complaints in NHTSA records

   “While driving, my Infiniti g-35 looses engine power and the engine shuts off while driving without notice along with sudden lack of power steering. My service engine light stayed on when I started the vehicle back a short time later. Several cars had to swerve from hitting me. I was able to make it to get a diagnostics and it's saying crankshaft position sensor/ camshaft position sensor. The engine shutting off while driving start happening other times same way. This happened on the expressway and main roads. …”

   NHTSA complaint #11288021, filed 2019-12, 97,000 miles

   “I own a 2007 Infiniti G35 coupe. In august 2013, while driving at approximately 40 MPH, the engine stalled without warning. This occurred in the middle lane of I-95 rush hour traffic. The power steering was out as well but I was able to pull my car to the shoulder. The vehicle was unable to restart after multiple attempts and was towed to the a repair facility. They were able to start the car with next morning without issue. Ran diagnostics and no code was indicated. The approximate failure mileage was 80,000. …”

   NHTSA complaint #10717621, filed 2015-05, 80,000 miles
3. 3
   Electrical system

   Electrical and window/interior accessory faults

   • 13 complaints (11%)
   • median 49,000 mi at 6.9 yrs old (11 state mileage)
   • filed 2007–2022

   Complaints describe power windows that move slowly, stop, or drop on their own (including a rear window that needed a battery disconnect to reset), and center-stack navigation, radio and climate controls that freeze or shut off together. Owners also report intelligent key and ignition cylinder problems, and in one case the air conditioning stopped responding to controls. Reported across a wide range, roughly from new to 180,000 miles, with interior electronics faults often appearing over 50,000 miles.

   3 related service bulletins

   What to check: Cycle every window and check the auto-up function, test the radio, navigation and climate buttons, and try both intelligent keys; ask whether the intelligent key campaign or any BCM/radio replacement was done.

   2 excerpts from owner complaints in NHTSA records

   “On 5 different occasions now the rear passenger window went down on it's own without me touching the switch and when I go to put it back up it will not go. I have to unplug the battery wait 30 seconds and then plug it back for it to work. After the second time that it happened I went to the car shop and they charged me $700 to fix the motor then 2 weeks later it happened again. …”

   NHTSA complaint #11328553, filed 2020-06, 130,000 miles

   “The intelligent key offered with the new technology package is not built to withstand normal use. My unit completely died with 48 hours of owning the vehicle, leaving me stranded and missing mother's day lunch. Infiniti has acknowledged conflicts with the key and mobile phones, however a recall needs to be enacted.”

   NHTSA complaint #10198537, filed 2007-08, 490 miles
4. 4
   Visibility (wipers, defrost, mirrors)

   Sticky or melting dashboard and glare

   • 10 complaints (9%)
   • median 59,000 mi at 9.0 yrs old (9 state mileage, few)
   • filed 2014–2018

   Owners report the top of the dashboard becoming sticky and shiny over time, collecting dust and reflecting sunlight onto the windshield in a way that makes forward vision difficult in low sun. Some note it happens even on garage-kept, lightly driven cars, and others describe window trim and seals becoming sticky or deteriorating. Reported from about 10,000 to 145,000 miles, generally after several years of age and in hot or sunny conditions.

   What to check: Inspect the dashboard top in daylight for a tacky or glossy finish and check for glare across the windshield; look at window seals for cracking or stickiness.

   2 excerpts from owner complaints in NHTSA records

   “My dashboard (top near the windshield glass) is always sticky and shiny in certain parts and collects dust. It makes it difficult to drive in the sun because of the glare from the stickiness. The lightly driven car is kept in garage at home and exposed to sun when at work. Vehicle has 57k miles and has always been garage kept. I am concerned after hearing about other Infiniti dashboards that are melting and no action from the manufacturer.”

   NHTSA complaint #10872092, filed 2016-06, 57,000 miles

   “When driving into the sun, the melting dash causes a glare on my windshield which can make it difficult to see. I noticed the issue a while back but never thought to report it.”

   NHTSA complaint #11035888, filed 2017-10, 145,000 miles

Buying note. Have a pre-purchase inspection scan the air bag and occupant classification system and confirm recall status by vehicle identification number, since the passenger-seat sensor issue and its repair cost come up often. On manual cars, verify clutch pedal feel and ask about engine stalling history, ECU reprogramming, and interior electronics function.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.