Electrical complaints by model year
Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
What owners report
Sunroof drain failure causing rain water from the outside of the vehicle to enter the interior flooding the passenger side going from the front seats to the back seats. Due to the sunroof drain defect, the flooding of the interior causes the water to get into the body control module impacting the electronics which can result in numerous failures in the vehicle making it dangerous to drive. There are numerous videos on YouTube and posts on online forums describing this very issue which is extremely common with the G37. Infiniti dealer confirms the issue, but takes absolutely no responsibility. The cost of the repairs to the sunroof drain and body control module are completely placed on the consumer.
It started when I was pulling into the parking lot in my office building. With no warning, the car started to accelerate at around 7-8 RPM making a roaring noise heard by many witnesses. This resulted in losing control of the car which then went off the side of the lot into a steep decline where I hit a tree. If it wasn't for that tree there was another 60-70 ft drop into a canyon that I inevitably would have fallen into. You might say, "oh I might've pressed on the acceleration instead of the brakes", but there were skid marks left on the ground that would indicate I was already pressing the brakes to come to a stop, when it suddenly accelerated. In addition, I wouldn't have pressed the brakes that hard, so even if I did accidentally press the acceleration, there would be no way the car would hit 7-8 RPM without virtually flooring it. …
I purchased this vehicle, 2012 Infiniti G 37XS in September 2023. The vehicle was basically brand new with less than 2200 miles on it and I have driven it very little up to that point, October 2024, as it is not my primary vehicle. Around [redacted], I believe it was around 8100 miles and change on the vehicle, a warning light came on my dash regarding my passenger airbag. Since that date, I have worked with Plaza Infiniti in Creve Coeur, who has looked at the vehicle a few times and identified that there is no part replacement other than OEM that can fix this issue. However, the part has been discontinued. Today, I reached out to Infiniti directly, and with a sad heart, they refuse to even listen to me. Now, I have a vehicle that has a safety issue and no way to fix it. The part number 87300-1NL6A, is the lower seat assembly for the passenger side of my 2012 Infiniti G 37XS. …
I've owned this 2012 g37 for a few years and had no issues whatsoever. However within the last couple of months, my air bag light came on and has been flashing since. I've taken it to get inspected and had the system checked and was told my passenger seat occupant sensor malfunctioned and is throwing the code on. The sensor itself, very easily replaced, is unable to be bought by itself. Repairs by the dealership is well over 5,000 for the seat and labor. The sensor is being sold as a component part of the bottom build of the seat, and cannot be sold otherwise. The issue with the sensor not being active, prevents the activation of the passenger airbag regardless of the seat being occupied or not. My concerns are that I won't be able to safely commute with passengers on the road and also being able to pass state inspection, as needed per law per state. …
Rear speaker AMP caught fire and burned the rear of the vehicle near the fuel tankMarch 19, 2021. The electrical fire occurred several hours after the vehicle had been parked under an apartment housing complex carport. Had it not been noticed the structure along with several other vehicles could have caught fire. Pasco Washington Fire identified the source as the factory AMP in the rear of the vehicle having started the fire. It is available for inspection
Sunroof drain has malfunctioned multiple times, even after having the Infiniti dealer replace with brand new ones. This was a very expensive repair and has already failed again. Upon searching the internet, this is a known, common problem and Infiniti should have recalled this issue. Water has leaked into my car onto my electronics. Luckily, nothing major has occurred while I was driving like it has for other owners of this same vehicle, but my power functions are malfunctioning because of this flawed component. The vehicle has been inspected and repaired by an Infiniti dealer, who also told me that this is a very common issue with this vehicle and sometimes causes the car to shut off while it is being driven. There are no warnings for this issue - just a bunch of water leaking straight into the car and underneath the floorboard, where many electrical components are housed.
I was driving at about 65 mph on the tail end of a roughly 2 hour trip. The car shut off on me completely. Fortunately there weren't many cars on the road, so I was able to force the steering wheel - since power steering went out as well, I needed to turn the wheel forcefully - to the shoulder. The brakes worked ok, but not well, again because the engine shut off, so I was forcing the brakes and they took a lot longer to work than normally. Had there been normal to heavy traffic, I'd definitely have been in a very bad crash. The vehicle is available for inspection if needed. This is the second time this situation has occurred to me in this vehicle. There was no warning lamp, message, or symptom prior to or after the incident. A dealer, manufacturer, police, insurance, nor anyone else has inspected or reproduced the problem. Various Infiniti online forums reference the same issue.
I am the original owner of this 2009 G37 sedan with only 12K miles. This car has never been in an accident. It is perfectly maintained and sits in a garage 99% of the time. Last week the airbag light flashed on. The dealer said the error code was B1018 (Occupant Classification Sensor malfunction). The cost of the passenger seat cushion alone is $7,500. This problem was also found on the 2007 & 2008 G37 models and part of a NHTSA recall (#08V521000). I found this problem all over the internet and this NHTSA site for this model year G37. PLEASE INVESTIGATE THIS PROBLEM. Why isn't this part of the 2007/2008 recall when the sensor is bad in both instances?
Related recalls (1)
Electrical system › Software
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.
Remedy: Dealers will test the signal between the ocs and acu systems using a special tool to check that it is functioning as designed.
Frequently asked questions
Which Infiniti G37 years have electrical problems?
By NHTSA complaints, the 2009 (16), 2008 (13), 2012 (10), 2011 (9) and 2013 (7) model years. Electrical complaints make up 10% of all complaints for the 2009.
Is there a recall for Infiniti G37 electrical problems?
Yes — 1 recall, including 08V-521 (software, Oct 7, 2008). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Infiniti G37 electrical problems start?
Across all years, half of the complaints with a recorded mileage happened before about 56,000 miles; 41% happened before 50,000 miles.
What part fails most often?
Owners most often name the wiring (1 mentions).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.