2018 Toyota 86 Won't Start

Common Causes for Your 2018 Toyota 86 Not Starting and How to Resolve Them

Find Repair Location
Reviewed by
Andrew Hajjar
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 2018 Toyota 86 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 when a 2018 Toyota 86 won't start?

When your 2018 Toyota 86 refuses to start, employing a methodical diagnostic approach is crucial for pinpointing the issue. Start by checking the battery, as a dead or weak battery is often the primary reason for starting failures; using a multimeter can help you determine its voltage. If the battery is functioning well, the next step is to verify that there is enough fuel in the tank, as running out of gas can easily be overlooked. Should both the battery and fuel levels be satisfactory, inspect the ignition switch, since a malfunction here can prevent the engine from engaging. Additionally, assess the starter motor for any signs of malfunction, as it plays a vital role in starting the engine. It's also important to evaluate the fuel system for potential problems, such as clogged fuel filters or a faulty fuel pump, which can impede fuel delivery. Lastly, using an OBD-II scanner to check for error codes can reveal any electronic issues affecting your vehicle. By following these steps, you can effectively diagnose and resolve the starting problems with your Toyota 86.

What are the common problems that could cause a 2018 Toyota 86 to not start?

When your 2018 Toyota 86 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 primary reason for starting failures. If the battery is in good condition, the next step is to inspect the starter motor, as a malfunctioning starter can prevent the engine from turning over. Additionally, consider the fuel system; a clogged fuel filter or a faulty fuel pump can disrupt fuel delivery, leading to starting issues. Don't overlook the ignition system either; a faulty ignition switch can stop the car from starting when the key is turned, while worn-out spark plugs or malfunctioning ignition coils can hinder the ignition process. By systematically checking these components, you can identify the root cause of the starting problem and take the necessary steps to resolve it.

How urgent is it to address the starting issue in a 2018 Toyota 86?

When dealing with starting issues in a 2018 Toyota 86, the urgency of addressing the problem cannot be overstated. If your vehicle fails to start, it is essential to act quickly, as this could leave you stranded and potentially lead to more severe mechanical failures. Starting problems often stem from critical components like the battery, starter motor, or electrical systems, which, if left unchecked, can compromise the safety of both the driver and passengers. Moreover, neglecting these symptoms may result in escalating repair costs, as minor issues can develop into major problems over time. By tackling starting issues promptly, you not only safeguard your vehicle's integrity but also enjoy the peace of mind that comes with knowing your car is reliable. For DIY enthusiasts, understanding the urgency of these issues is crucial in ensuring a safe and efficient driving experience.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2018 Toyota 86 Won't Start? Common Causes & Repairs