2017 Toyota Yaris Won't Start

Common Causes for Your 2017 Toyota Yaris Not Starting and How to Resolve Them

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Reviewed by
Aisha
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 Toyota Yaris 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 steps should I take to diagnose the starting issue in my 2017 Toyota Yaris?

When diagnosing a starting issue in your 2017 Toyota Yaris, it's essential to adopt a systematic approach that begins with the simplest checks before moving on to more complex diagnostics. Start by examining the battery, as a weak or dead battery is often the most common reason for starting problems. Use a multimeter to measure the battery's voltage; a reading below 12.4 volts may indicate that it needs charging or replacement. Next, inspect the starter motor to ensure it is functioning correctly, as a malfunctioning starter can prevent the engine from turning over. Following this, check the ignition switch to confirm it engages properly when you turn the key, as a faulty switch can disrupt the starting process. Additionally, assess the fuel system for any blockages or failures, such as a clogged fuel filter or a malfunctioning fuel pump, which can hinder fuel delivery to the engine. Don't forget to examine the spark plugs; worn or dirty plugs can lead to ignition issues. Finally, check the Engine Control Unit (ECU) for any stored error codes that might indicate underlying problems. By following this diagnostic approach, you can effectively identify and address the starting issue in your Yaris, ensuring a smoother and more reliable driving experience.

What are the common problems that could cause a 2017 Toyota Yaris to not start?

When your 2017 Toyota Yaris refuses to start, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. 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 seems fine, the next step is to inspect the starter motor, as a malfunction here can prevent the engine from turning over. Fuel delivery issues are also common, so ensure that the fuel pump is functioning and that the fuel filter isn’t clogged. Additionally, ignition components like the ignition switch, coil, and spark plugs should be examined, as any faults in these areas can lead to starting difficulties. Don’t overlook the alternator, which is responsible for charging the battery; if it’s failing, it may not provide enough power for a successful start. Lastly, consider the vehicle's security system, as a malfunction can inadvertently prevent the engine from starting. By systematically checking these components, you can identify and resolve the issue, getting your Yaris back on the road.

How urgent is it to address the starting issue in a 2017 Toyota Yaris?

Addressing starting issues in a 2017 Toyota Yaris is crucial, as neglecting these problems can lead to serious consequences. Safety should always be the top priority; if the vehicle struggles to start, especially in emergency situations, it poses a significant risk to both the driver and passengers. Additionally, the severity of the starting issue plays a vital role in determining urgency. An intermittent problem may seem less pressing, but a consistent failure to start can leave you stranded and vulnerable. Moreover, delaying repairs can exacerbate the situation, potentially leading to more extensive damage to the engine or electrical systems, which can result in costly repairs. Lastly, a reliable starting system is essential for the overall convenience of using your vehicle daily. By addressing starting issues promptly, you ensure that your Toyota Yaris remains dependable, allowing you to navigate your day-to-day activities without worry. Therefore, it is advisable to diagnose and repair any starting issues as soon as they arise to maintain the vehicle's optimal performance and safety.

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