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2024 Acura Integra A-Spec Tech - Adaptive Cruise Control Malfunction

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Mike T. · rep 0 · May 25, 3:39 AM · 1 replies · solved · Question

Vehicle: 2024 Acura Integra A-Spec Tech

Hey guys,

I just picked up my new 2024 Acura Integra A-Spec Tech a few months ago, and I'm already having an issue. Today, I got a 'Adaptive Cruise Control System Malfunction' message on the dash, and the system wouldn't engage. The Lane Keeping Assist System also seems to be affected.

The weather was clear, and I made sure the front radar sensor area (in the lower grille) and the windshield camera were clean. There's no visible damage to the car. I tried restarting the car multiple times, but the message persists.

Is this a known bug or a common sensor issue on these newer Integras? It's frustrating to have a brand new car with these advanced features not working. What could be causing this?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:39 AM

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ClearTheCode admin answer:

It's certainly frustrating to experience a malfunction with advanced driver-assistance systems (ADAS) on a brand-new 2024 Acura Integra A-Spec Tech. The Adaptive Cruise Control (ACC) and Lane Keeping Assist System (LKAS) often work in conjunction, relying on shared sensors and control modules. When one system reports a malfunction, it's common for related systems to also be affected.

Here are the typical causes for such a malfunction:

  1. Sensor Obstruction/Damage: Even if you've cleaned the visible areas, sometimes a subtle obstruction (like a small bug, ice, or road grime) can interfere with the radar sensor in the front grille or the camera behind the rearview mirror. Less commonly, a minor impact or vibration could have shifted a sensor out of alignment.
  2. Sensor Calibration Issues: These sophisticated systems require precise calibration. If a sensor's alignment is off by even a fraction, it can cause malfunctions. This could happen from a minor bump, or even a factory calibration issue.
  3. Software Glitch: Modern vehicles are essentially computers on wheels. A temporary software bug in the ADAS control module can sometimes cause these errors. A simple power cycle (turning the car off and on) often clears these, but if persistent, it might require a software update.
  4. Wiring or Connector Issues: Although less common on a new vehicle, a loose or faulty electrical connection to one of the sensors or the main ADAS control unit could interrupt communication.
  5. Faulty Sensor/Module: In rare cases, a sensor (radar, camera) or the ADAS control module itself could be defective from the factory.

What to do:

  1. Thorough Cleaning: Double-check the radar sensor in the lower front grille and the camera area behind the rearview mirror for any smudges, dirt, or debris. Use a soft cloth and glass cleaner for the camera area.
  2. Restart Cycle: You've done this, but sometimes a longer power-down (e.g., leaving the car off for 15-30 minutes) can reset modules.
  3. Check for Other Warnings: Ensure no other warning lights are on that might be indirectly related.

When to see a shop:

Since your Integra is brand new and under warranty, the absolute best course of action is to schedule an appointment with your Acura dealership immediately. They have specialized diagnostic tools to read the specific fault codes from the ADAS control module, which generic OBD-II scanners cannot access. They can accurately diagnose whether it's a sensor issue, a calibration problem, a software glitch requiring an update, or a faulty component. Do not attempt to self-diagnose or repair complex ADAS systems, as they are critical for safety and require specialized equipment and training.

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