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If your Infiniti car won’t start and you suspect a computer problem, you’re in the right place. This article provides a comprehensive guide to diagnosing and troubleshooting computer-related starting issues in Infiniti vehicles. We’ll cover everything from common causes to advanced diagnostics, helping you get back on the road quickly.

Common Causes of Infiniti Car Starting Problems

Several factors can contribute to an Infiniti not starting, with computer-related issues being a common culprit. These include:

• Faulty Crankshaft Position Sensor: This sensor tells the computer the position of the crankshaft, which is essential for timing fuel injection and ignition. A malfunctioning sensor can prevent the engine from starting.
• Malfunctioning Camshaft Position Sensor: Similar to the crankshaft sensor, the camshaft position sensor informs the computer about the camshaft’s position. A faulty sensor can disrupt the engine’s timing and prevent starting.
• Immobilizer System Malfunction: The immobilizer system is designed to prevent theft by disabling the engine if the correct key isn’t used. A malfunction can prevent the car from starting even with the right key.
• ECU/ECM Issues: The Engine Control Unit (ECU) or Engine Control Module (ECM) is the brain of your car’s engine management system. A faulty ECU/ECM can cause various starting problems, including a no-start condition.
• Wiring Harness Problems: Damaged or corroded wiring within the engine harness can disrupt communication between the ECU/ECM and other components, leading to starting issues.
• Dead Battery or Weak Alternator: While not directly related to the computer, a dead battery or weak alternator can cause electrical system instability, potentially affecting the ECU/ECM and preventing the car from starting.

Diagnosing Infiniti Car Won’t Start Computer Problem

Diagnosing a computer-related starting problem requires a systematic approach. Here’s a step-by-step guide:

1. Check the Battery and Alternator: Ensure the battery has sufficient voltage and the alternator is charging correctly. A weak or dead battery can cause erratic behavior in the electrical system.
2. Inspect the Key Fob Battery: A low key fob battery can sometimes interfere with the immobilizer system. Try replacing the battery in the key fob.
3. Scan for Diagnostic Trouble Codes (DTCs): Use an OBD-II scanner to retrieve any stored trouble codes. These codes provide valuable clues about the nature of the problem.
4. Check the Crankshaft and Camshaft Position Sensors: Visually inspect these sensors for damage or corrosion. Use a multimeter to test their resistance and signal output.
5. Inspect the Wiring Harness: Look for any signs of damage, corrosion, or loose connections in the engine wiring harness.
6. Test the ECU/ECM: Although more complex, testing the ECU/ECM can be done with specialized diagnostic equipment.

How to Fix an Infiniti Car That Won’t Start Due to a Computer Problem

Once you’ve diagnosed the problem, the appropriate repair can be performed. This might involve replacing a faulty sensor, repairing damaged wiring, or even replacing the ECU/ECM.

Infiniti Car Won’t Start: Computer Reset

Sometimes, a simple computer reset can resolve the issue. This can be done by disconnecting the battery for a few minutes. However, be aware that this may erase stored settings in the car’s computer.

“A computer reset can sometimes resolve minor software glitches that prevent an Infiniti from starting. However, it’s important to diagnose the underlying cause to ensure the problem doesn’t recur.” – John Miller, Automotive Electrical Engineer

Conclusion

An Infiniti car that won’t start due to a computer problem can be frustrating. However, by following the steps outlined in this article, you can effectively diagnose and resolve the issue. Remember to prioritize safety and consult with a qualified mechanic if you’re unsure about any step. Need assistance? Connect with Autotippro at +1 (641) 206-8880 or visit our office at 500 N St Mary’s St, San Antonio, TX 78205, United States.

“Addressing infiniti car wont start computer problem efficiently requires a combination of diagnostic skills and understanding of the vehicle’s electronic systems. Don’t hesitate to seek professional help if needed.” – Sarah Johnson, Senior Automotive Technician

FAQ

1. Can a dead key fob battery prevent my Infiniti from starting? Yes, a dead key fob battery can sometimes interfere with the immobilizer system.
2. What is the most common cause of an Infiniti Car Wont Start Computer Problem? Faulty sensors, such as the crankshaft or camshaft position sensor, are common culprits.
3. How much does it cost to replace an Infiniti ECU/ECM? The cost can vary depending on the model and year of the vehicle, but it can be a significant expense.
4. Can I drive my Infiniti with a check engine light on? While you might be able to drive, it’s important to get the problem diagnosed as soon as possible to prevent further damage.
5. How can I prevent infiniti car wont start computer problem? Regular maintenance, including battery and alternator checks, can help prevent computer-related starting issues.
6. What tools do I need to diagnose an infiniti car wont start computer problem? An OBD-II scanner and a multimeter are essential tools.
7. Where can I get help with my Infiniti car wont start computer problem? Contact AutoTipPro for expert assistance.