2017 Lexus GS F Won't Start

Common Causes for Your 2017 Lexus GS F Not Starting and How to Resolve Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
38% chance it's the
Battery
0%
27% chance it's the
Alternator
0%
20% chance it's the
Starter
0%
15% chance it's
Something else
The most common reasons a 2017 Lexus GS F won't start are a dead battery, an alternator problem, or failed starter.
  • Battery: A weak or failing battery can result in difficulty starting the engine and electrical system malfunctions.
  • Alternator: A failing alternator can result in insufficient electrical power, leading to battery drain and electrical system malfunctions.
  • Starter: A faulty starter motor or a weak battery can prevent the engine from cranking properly, leading to starting issues.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the initial diagnostic steps to take for a 2017 Lexus GS F that won't start?

When your 2017 Lexus GS F refuses to start, it's essential to adopt a methodical diagnostic approach to identify the root cause efficiently. Begin by checking the battery, as a weak or dead battery is often the most common culprit behind starting issues. Ensure that the battery terminals are clean and securely connected. Next, verify the fuel level in the tank; sometimes, the simplest explanation is a lack of fuel. If both the battery and fuel levels are adequate, turn your attention to the ignition system. Inspect components like spark plugs and ignition coils for wear or damage, as these can significantly impact starting performance. Utilizing an OBD-II scanner can also be beneficial; it allows you to read any error codes that may indicate specific problems within the vehicle's systems. If no issues are found in these areas, proceed to examine the starter motor and fuel system, ensuring that both are functioning correctly and delivering the necessary power and fuel to the engine. By following this structured approach, you can effectively diagnose and address the starting issues with your Lexus GS F, potentially saving time and repair costs.

What are the common problems that could cause a 2017 Lexus GS F to not start?

When your 2017 Lexus GS F refuses to start, it can be frustrating, but understanding the common problems can help you troubleshoot the issue. One of the first things to check is the battery; a dead or weak battery is often the culprit, especially if the vehicle has been sitting idle or exposed to extreme weather conditions. If the battery is in good condition, the next step is to inspect the starter motor, as a faulty starter can prevent the engine from cranking. Additionally, consider the fuel system; a clogged fuel filter or malfunctioning fuel pump can disrupt fuel delivery, making it impossible for the engine to start. Don't overlook the ignition switch, as a malfunction here can also hinder the starting process. Furthermore, worn-out spark plugs may lead to ignition issues, so checking their condition is essential. Lastly, if your vehicle's security system is malfunctioning, it may inadvertently prevent the car from starting. By systematically evaluating these components, you can identify the root cause of the starting issue and take appropriate action to resolve it.

What urgent steps should be taken to diagnose and resolve the starting issue in a 2017 Lexus GS F that won't start?

When your 2017 Lexus GS F won't start, it's crucial to act quickly to diagnose and resolve the issue to avoid further complications. Start by checking the battery, as a dead or weak battery is often the primary culprit behind starting problems. If the battery is fine, inspect the fuel system to ensure there’s enough fuel in the tank, as running out of gas can prevent the engine from starting. Next, examine the ignition system, including spark plugs and ignition coils, since faulty components here can hinder the starting process. Utilizing a diagnostic tool to scan for error codes can provide insights into any underlying issues that may not be immediately visible. Additionally, check the starter motor and alternator to confirm they are functioning correctly, as a malfunctioning starter can prevent the engine from turning over, while a faulty alternator can lead to a drained battery. Lastly, inspect all electrical connections for any loose or corroded wires, as these can disrupt the necessary flow of electricity. By addressing these areas promptly, you can mitigate safety risks and prevent further damage to your vehicle, ensuring a swift return to the road.

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