Understanding ACC Service Required in Mitsubishi Outlander
The “ACC SERVICE REQUIRED” message in a Mitsubishi Outlander typically indicates an issue with the Adaptive Cruise Control (ACC) system. This system uses radar and sensors to maintain a set distance from the vehicle ahead, adjusting the speed as necessary. When this message appears, it means the ACC system has detected a fault or abnormality that needs to be addressed.
Table: ACC Service Required in Mitsubishi Outlander
| Issue Type | Potential Causes | Symptoms | Recommended Actions |
|---|---|---|---|
| ACC System Malfunction | – Faulty radar sensor | – ACC system not functioning | – Perform a diagnostic scan to identify specific error codes |
| – Blocked or dirty radar sensor | – Warning message on dashboard | – Clean the radar sensor | |
| – Electrical issues (e.g., wiring problems, blown fuses) | – Inability to engage ACC | – Check and replace any blown fuses | |
| – Software glitches | – Reduced vehicle speed | – Update vehicle software | |
| – Issues with the brake light or brake light fuse | – Vehicle may go into “limp” mode | – Inspect and replace faulty brake light components | |
| – Faulty steering angle sensor | – Replace the steering angle sensor if necessary | ||
| – Problems with other related systems (e.g., ASC, FCM) | – Check and service related systems (e.g., ASC, FCM) | ||
| Environmental Factors | – Radar blocked by dirt, ice, or snow | – ACC temporarily unavailable | – Remove any obstructions from the radar sensor |
| – Extreme weather conditions | – Wait for weather conditions to improve | ||
| Mechanical Issues | – Faulty brake system components | – Vehicle may not start | – Inspect and repair brake system components |
| – Malfunctioning ABS sensors | – Clean or replace ABS sensors |
Detailed Information
Potential Causes
- Faulty Radar Sensor: The radar sensor used by the ACC system may be malfunctioning or damaged.
- Blocked or Dirty Radar Sensor: Dirt, ice, or other obstructions can block the radar sensor, preventing it from functioning properly.
- Electrical Issues: Problems with wiring, blown fuses, or other electrical components can interfere with the ACC system.
- Software Glitches: Software issues can cause the ACC system to malfunction, requiring a software update.
- Brake Light Issues: Problems with the brake light or its fuse can cause the ACC system to fail.
- Steering Angle Sensor: A faulty steering angle sensor can also trigger the ACC service required message.
- Related System Issues: Problems with other systems like the Active Stability Control (ASC) or Forward Collision Mitigation (FCM) can affect the ACC system.
Symptoms
- The ACC system does not function.
- A warning message appears on the dashboard.
- The vehicle may go into a “limp” mode, reducing speed and acceleration.
- Inability to engage the ACC system.
Recommended Actions
- Diagnostic Scan: Perform a diagnostic scan to identify specific error codes related to the ACC system.
- Clean Radar Sensor: Ensure the radar sensor is clean and free from obstructions.
- Check Electrical Components: Inspect and replace any blown fuses or damaged wiring.
- Software Update: Update the vehicle’s software to the latest version.
- Inspect Brake Light: Check the brake light and its fuse, replacing any faulty components.
- Replace Steering Angle Sensor: If the steering angle sensor is faulty, it should be replaced.
- Service Related Systems: Check and service related systems like ASC and FCM if they are causing issues.
By addressing these potential causes and following the recommended actions, you can resolve the “ACC SERVICE REQUIRED” message and restore the functionality of the ACC system in your Mitsubishi Outlander.