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Infiniti Car Won’t Start – What Are The Reasons My Infiniti Car Won’t Start? 

Infiniti Car Won’t Start – What Are The Reasons My Infiniti Car Won’t Start? 

Drivers need to find out the main reasons why their Infiniti car won’t start so they can drive safely and confidently on the road. Owners need to research the top reasons why my Infiniti car won’t start and specific concerns regarding certain models, like the Infiniti Q50, QX60, QX4, M45, G35, G37, and the QX80.

Auto Repairs Are EXPENSIVE


10 Reasons My Infiniti Car Won’t Start 

We need to find out the main reasons why your Infiniti car won’t start. There are certain causes and faulty parts that lead to this issue most commonly in your Infiniti car. 

  • Inability of transmission to get into gear

One main cause of a bad transmission is that your transmission might not be able to stay in gear. If your car does not move smoothly, this could be a clear sign that there could be a low transmission fluid amount. 

  • This low transmission fluid could be due to a leak, the gear shifter, the gear shifter cable, or the problem with the automatic transmission system’s valve body, causing your ‘Infiniti car won’t start’ problem. 
  • Low Transmission Fluid

Secondly, your Infiniti car won’t start if the transmission fluid is too low to work correctly. This could be due to a transmission fluid leak, fluid contamination, or water intrusion during certain weather. Make sure you stay up to date with your transmission fluid level’s routine maintenance to prevent an expensive Infiniti transmission repair cost.

  • Transmission Slipping

Your Infiniti car won’t start if your transmission is slipping. The transmission slipping is caused by the pesky low transmission fluid, contamination of the transmission fluid, or the lack of routine maintenance in the transmission system.

  • No Power

Your Infiniti car won’t start if you have a lack of power. Your transmission might be failing and causing a lack of power. 

  • This problem could form from internal transmission problems, brakes that are not working correctly due to a faulty caliper or brake hose, or your car’s internal computer has limited power because of an internal electrical problem that has been detected in the engine. 
  • Gears Grinding

When your transmission grinds and the shifting gears are not working, this can be a condition that is directly related to the clutch not releasing, and the shift synchronizer rings inside the transmission being broken or damaged. Damage to the synchronizer and the clutch can easily cause the Infiniti not to start when turning the key in the ignition. 

  • Faulty Crankshaft Position Sensor

This is possibly the most common cause when it comes to your engine cranking, but your car won’t start. If the crankshaft position sensor isn’t working properly, it can cause the car’s internal computer – the engine control unit – not to function correctly. 

  • The engine’s computer is in charge of the crankshaft position sensor, so if it detects a problem, the check engine light will come on and the Infiniti car won’t start.
  • Damaged Fuel System

The fuel pump supplies the engine with the correct amount of fuel for it to run properly. If the fuel pump is not working correctly, the engine won’t run, and it will shut off. If the fuel pump, fuel injector, or fuel filter are damaged, this can cause the Infiniti car won’t start. 

  • Fuel Pump and Filter – Unfortunately for this fuel issue, there is no way around a broken or faulty fuel pump – you need to repair or replace the fuel pump. You also should check the fuel filter, as that could be the main problem. The fuel filter’s job is to clean the fuel going into the engine. If the filter is clogged, the fuel going into the engine will be impeded. 
  • Fuel Supply Line – The last thing that could be faulty with the fuel system is the fuel supply line. This is how gas gets to the engine from the fuel tank supply. If the supply lines are broken or clogged, then there is no way for the gas to get to the engine. If the gas cannot get to the engine, your Infiniti car won’t start.
  • Empty Fuel Tank

This is a common occurrence that most people have experienced – you get distracted and forget to keep an eye on your fuel gauge. If you run out of fuel while driving, your engine can crank, but your car will not start.

  • Damaged Fuel Gauge – However, it might not be completely your fault. Another reason your car could run out of gas is if your fuel gauge isn’t working properly. Regardless of why you ran out of gas, you should still get your car checked by a mechanic to diagnose the correct problem and figure out why your Infiniti car won’t start.
  • Damaged Alternator

The alternator supplies your vehicle with a constant stream of electricity. If your car shuts off while driving, it is likely that your alternator has gone bad. A broken alternator will cut the power to your car, signaling this information to you by a flashing dashboard light or the engine suddenly shut off. 

    • If you pay attention to your car, you can notice an alternator going bad over time. Your car will begin receiving an intermittent amount of power, causing the Infiniti car won’t start condition.
  • Replacing an alternator costs between $500 and $1,000 for a new mechanism. 
  • Broken Engine Control Unit

The ECU is your car’s computer in charge of the various systems and functions, ensuring your vehicle runs smoothly. This engine control module controls actuators on the internal combustion engine to ensure the engine is running at an optimal level.

  • If there is an issue with your car’s ECU, you can lose power in your car. Typically, you will notice the check engine light on your dash. After this light goes on, you should go to a mechanic immediately to see the reason why your Infiniti car won’t start. 
  • If you decide not to take your car to a mechanic, your car can accumulate more problems that can cause the Infiniti car won’t start condition. Plus, you can’t fix an ECU yourself to save some money. Your only option is to take it to a professional mechanic to avoid the car not starting condition. 

Infiniti Q50 Car Won’t Start

The Infiniti Q50 is a compact executive car that replaced the Infiniti G sedan. The newer model debuted at the 2013 North American International Auto Show and went into production for the 2014 model year. This car was similar to the previously-made Infiniti M, complete with a front-engine, rear-wheel-drive, or front-engine, all-wheel-drive setup.

  • The worst model year of the Infiniti Q50 is the 2014-2016 years, with 2014 having the most overall problems and 2015 having the most-reported problem of premature tire wear. Due to the high number of issues, owners state their Infiniti car won’t start. 
  • The main categories of concern in the 2014 Infiniti Q50 are the interior accessories, brakes, AC and heater, body and paint, clutch, engine, and transmission. 
    • Regarding the transmission, the main concern focuses on a blown transmission, with owners having to pay for an entirely new mechanism in their 2014 Q50 to remedy why their Infiniti car won’t start. 

Infiniti QX60 Car Won’t Start

  • The worst model years of the Infiniti QX60 are 2014, 2015, and 2017 versions, with a severe issue being the 2014 Infiniti due to the transmission shudder. 
    • However, the year with the most frequent problems is 2017 year, with the top categories of concern being the engine, transmission, exterior accessories, and interior accessories.
  • The top engine concern in the 2017 Infiniti QX60 is engine oil sludge. This common issue can worsen over time, causing the ‘Infiniti car won’t start’ problem associated with replacing the entire mechanism at around 30,000 miles. 

Infiniti QX4 Car Won’t Start

  • The most problematic years of the QX4 include 2002, 2003, and 1998 model years, with the worst issue being the engine stalling in the 1998 Infiniti QX4. Regarding the most problematic model year, the top categories of concern include the engine, AC and heater, and the cooling system. 
  • The top two engine issues with the 2002 Infiniti QX4 are the frequent burning of oil and the valve screw problem
    • Fixing the burning oil usually costs owners around $5,000 to remanufacture the engine at around 99,000 miles to remedy why their Infiniti car won’t start. 

Infiniti M45 Car Won’t Start

  • The worst model years of the Infiniti M45 is the 2003 version, with the most concerning issue being the exhaust manifold cracking over prolonged use. In the 2003 Infiniti M45, the problem categories involve the engine, exhaust system, and  seatbelts, and airbags. 
  • The top engine concerns focus on the car burning excessive oil, excessive smoke at the start, check engine light turning on, the car creating excessive smoke while driving, and causing the ‘Infiniti car won’t start’ condition.  
    • Fixing excessive oil consumption is relatively easy, with the typical average mileage coming at just below 110,000 miles and owners stating that adding the correct type of oil can often fix the concerning issue. 
    • However, replacing the fuel sensor may be needed to turn off the consistent check engine light in their Infiniti car. This problem can be a sign of various issues of why your Infiniti car won’t start. 

Infiniti G35 Car Won’t Start

Although the Infiniti G35 earned awards for the suspension system, the value of the vehicle, the customer satisfaction scores, and the handling, there have been some issues causing the ‘Infiniti car won’t start’ condition. 

  • The worst model years of the Infiniti G35 are the 2003 and 2006 model years, with 2003 having the most overall complaints, the most severe issues, and the most-reported concern of the steering rack leaking. 
  • The top three concerns regarding all model years dealt with the brakes and rotors breaking in the 2003 G35, the steering rack leaking in the 2003 G35, and the transmission falling in the 2007 G35. 
  • The other categories of concern in the 2003 Infiniti G35 are the interior accessories, the engine, the steering, and the transmission. 
    • Owners complain that the transmission fails prematurely, with the most common solution being to replace the transmission at around 35,000 miles for an average of $1,700. 
    • A failed transmission is one of the most common reasons why a driver is experiencing the ‘Infiniti car won’t start condition.’

Infiniti G37 Car Won’t Start

The Infiniti G37 was available as either the sedan or a coupe, with the G37 first introduced during the 2008 model years. The G37 utilized a 3.7-liter V6 engine, capable of putting out over 328 horsepower and producing 269 per foot of torque at 5,200 RPM. Despite the powerful specs, owners report the Infiniti car won’t start. 

  • The worst model years of the G37 are the 2008, 2009, and 2011 options, with 2009 having the most-reported problem of the dashboard cracking. 
  • The top three problems across every single Infiniti G37 year focus on the seats not working properly in the 2010 G37, the airbag sensor malfunctioning in the 2011 G37, and the steering lock failing in the 2009 G37. 
  • Fixing the seats not working correctly costs owners around $2,000 and typically happens at nearly 42,000 miles. The airbag sensor costs almost $7,000 to repair in the 2011 G37, while the steering lock failing costs owners around $1,200 at nearly 85,000 miles to remedy why the Infiniti car won’t start. 
  • Owners of the 2009 Infiniti G37 state concerns with the interior accessories, electrical system, steering mechanism, and transmission. With the widespread prevalence of concerns, many instances of the ‘Infiniti car won’t start’ problem. 

Infiniti QX80 Car Won’t Start 

The main category of concern regarding the Infiniti QX80 involves the car not being able to start, the motor revving unnecessarily, the car shuddering while turning, and the rear axle assembly causing performance issues.

  • Infiniti did recognize some concerns with this specific model, stating that the rattling noise comes from the SUV while the engine is running. The rattling noise occurs at low speeds or during turning. 

The Bottom Line

As you can see, figuring out the reasons why the Infiniti car won’t start is crucial to keeping you safely on the road!