2020 Mazda CX-5 Won't Start

Resolve Starting Issues for Your 2020 Mazda CX-5

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Reviewed by
Devin Cabugcal
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 2020 Mazda CX-5 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 diagnostic steps should be taken to troubleshoot the starting issue in a 2020 Mazda CX-5?

When faced with a starting issue in your 2020 Mazda CX-5, it's essential to adopt a methodical diagnostic approach to effectively identify and resolve the problem. Begin by checking the battery, as a weak or dead battery is often the most straightforward culprit behind starting failures. If the battery is in good condition, move on to inspect the starter motor, which is crucial for turning the engine over. Next, examine the ignition switch, as a malfunction here can disrupt the electrical system's engagement. If these components check out, test the fuel system to ensure the fuel pump is operational and delivering fuel to the engine. Additionally, inspect the spark plugs for wear or damage, as faulty plugs can hinder ignition. Don't overlook the alternator, which must be functioning correctly to keep the battery charged while the engine runs. Finally, using a diagnostic scanner to check for error codes can provide insights into any underlying issues that may not be immediately apparent. By following this structured approach, you can effectively troubleshoot and resolve starting issues in your Mazda CX-5, ensuring a smoother driving experience.

What are the common problems that could cause a 2020 Mazda CX-5 to not start?

When your 2020 Mazda CX-5 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. If the battery seems fine, the next step is to inspect the starter motor, as a faulty starter can prevent the engine from turning over. Additionally, issues within the fuel system, such as a clogged fuel filter or a malfunctioning fuel pump, can hinder fuel delivery, making it impossible for the engine to start. Don't overlook the ignition switch, as a malfunction here can disrupt the electrical system's engagement. Worn-out spark plugs may also be to blame, as they are essential for proper ignition. Furthermore, a defective alternator can lead to a drained battery, compounding the starting issue. Lastly, consider the vehicle's security system; a malfunctioning immobilizer can prevent the car from starting altogether. By systematically checking these components, you can identify and resolve the starting issues with your Mazda CX-5.

How urgent is it to address the starting issue in a 2020 Mazda CX-5?

When dealing with starting issues in a 2020 Mazda CX-5, it is crucial to assess the urgency of the situation to prevent further complications. If the vehicle fails to start or experiences intermittent issues, it is essential to act quickly, as these problems can lead to being stranded or may cause additional damage to the vehicle's electrical system. Warning lights on the dashboard serve as critical indicators; their illumination suggests that immediate attention is necessary to avoid safety hazards or more extensive repairs. Additionally, any unusual noises or smells during the starting process should not be ignored, as they may signal serious underlying issues that require prompt resolution. While some starting problems may stem from routine maintenance, addressing them in a timely manner is vital to maintaining the vehicle's reliability. If there is any uncertainty regarding the severity of the issue, consulting a qualified mechanic for a professional diagnosis is advisable. By prioritizing these concerns, you can ensure the longevity and safety of your Mazda CX-5.

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Why Your 2020 Mazda CX-5 Won't Start: Causes & Solutions