ASC System Service Required: Mitsubishi Car Won’t Start

Your Mitsubishi won’t start and the dashboard displays “ASC System Service Required”? This is a frustrating situation, but understanding the problem and its potential solutions can save you time and money. This article will guide you through the possible causes, diagnostics, and fixes for this common issue, helping you get back on the road quickly.

Understanding the ASC System and the “Service Required” Message

The ASC (Active Stability Control) system in your Mitsubishi is a crucial safety feature designed to prevent loss of control by managing traction and stability. When the “ASC System Service Required” message appears, it indicates a potential malfunction within this system, which can sometimes prevent the car from starting as a safety precaution.

What Triggers the “ASC System Service Required” Warning?

Several factors can trigger this warning, ranging from simple sensor issues to more complex problems with the ASC control unit. Some common culprits include:

• Faulty Wheel Speed Sensors: These sensors provide crucial data to the ASC system. A malfunctioning sensor can disrupt the system’s ability to accurately assess wheel speed, triggering the warning light.
• Brake Light Switch Issues: A faulty brake light switch can also interfere with the ASC system, as it provides information about brake pedal application.
• Steering Angle Sensor Problems: The steering angle sensor helps the ASC system determine the driver’s intended direction. A problem with this sensor can lead to inaccurate readings and activate the warning.
• Low Battery Voltage: A weak or failing battery can sometimes cause erratic behavior in electronic systems, including the ASC system.
• Wiring and Connector Problems: Corroded or damaged wiring and connectors can disrupt communication within the ASC system.
• ASC Control Unit Malfunction: In rare cases, the ASC control unit itself may be faulty, requiring replacement.

Diagnosing the Problem: Steps to Take

Before rushing to a mechanic, you can perform some basic checks yourself:

1. Check the Battery: Ensure the battery terminals are clean and tight. A low battery voltage can often cause unexpected warning lights.
2. Inspect the Brake Lights: Verify that all brake lights are functioning correctly. A faulty brake light switch is a common cause of ASC issues.
3. Visual Inspection: Check the wiring and connectors related to the ASC system for any visible damage or corrosion.

What to Do if Your Mitsubishi Car Won’t Start

If your Mitsubishi car won’t start in conjunction with the “ASC System Service Required” message, the issue may be more serious than a simple sensor malfunction. While a low battery could be a factor, it’s more likely a critical component within the ASC system is causing the car’s computer to prevent starting as a safety precaution.

Seeking Professional Help

If your Mitsubishi car won’t start, it’s crucial to seek professional assistance. A qualified mechanic with a diagnostic scanner can pinpoint the exact cause of the problem and recommend the appropriate repairs.

• Professional Diagnostic Scan: A diagnostic scan is essential to read the specific error codes stored in the car’s computer. These codes provide valuable insights into the root cause of the issue.

Preventing Future ASC System Issues

Regular maintenance can help prevent future ASC system problems. Here are some tips:

• Regular Brake Inspections: Ensure your brakes are in good working order, including the brake light switch.
• Battery Maintenance: Keep your battery charged and replace it if necessary. A weak battery can cause a multitude of electrical problems.
• Routine Check-ups: Schedule regular check-ups with a qualified mechanic to identify and address potential issues before they escalate.

Conclusion: Addressing “ASC System Service Required” and Starting Issues

The “ASC System Service Required” message in your Mitsubishi should not be ignored, especially if the car won’t start. While some simple checks can be performed at home, seeking professional diagnosis and repair is often the best course of action. By understanding the potential causes and taking appropriate steps, you can resolve this issue and ensure the continued safety and reliability of your Mitsubishi.

FAQs

1. Can I drive my Mitsubishi with the “ASC System Service Required” light on? While you might be able to drive, it’s not recommended. The ASC system is a critical safety feature.
2. How much does it cost to fix the ASC system? The cost varies depending on the specific problem. A simple sensor replacement could be relatively inexpensive, while a faulty ASC control unit can be more costly.
3. Can I reset the ASC light myself? Sometimes disconnecting the battery for a short period can reset the light, but this doesn’t fix the underlying problem.
4. Is the ASC system the same as traction control? The ASC system encompasses traction control and other stability features.
5. Can bad weather affect the ASC system? Extreme weather conditions can sometimes temporarily affect sensor readings.
   6.. What other warning lights might appear with the ASC light? You might see the ABS or check engine light illuminated simultaneously.
6. Will the ASC system affect my car insurance? Not directly, but driving with a known safety system issue could potentially impact a claim.

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