What does radar obstructed mean on Acura?
The "radar obstructed" message on an Acura vehicle's display indicates that the vehicle's radar sensors, which are used for features like Adaptive Cruise Control and Collision Mitigation Braking System, are temporarily blocked or unable to function properly.
What Causes Radar Obstructed on Acura?
There are several common reasons why the radar sensors on an Acura vehicle may become obstructed or blocked, leading to the "radar obstructed" warning:
- Environmental Conditions: Heavy rain, snow, fog, or other inclement weather can interfere with the radar sensors and cause temporary obstruction.
- Dirt or Debris: Buildup of dirt, mud, ice, or other debris on the front grille or bumper area where the radar sensors are located can block their operation.
- Obstructions: Large objects like signs, buildings, or other vehicles in front of the Acura can physically block the radar sensors.
- Sensor Misalignment: If the radar sensors become misaligned, often due to a collision or impact, they may not function properly and trigger the "radar obstructed" warning.
In most cases, the "radar obstructed" message is temporary and will clear once the obstruction is removed or the environmental conditions improve.
Resolving Radar Obstructed Issues on Acura
If you see the "radar obstructed" warning on your Acura's display, here are some steps you can take to resolve the issue:
- Check for Obstructions: Visually inspect the front grille, bumper, and surrounding areas for any dirt, debris, or physical obstructions that may be blocking the radar sensors.
- Clean the Sensors: If you find any buildup on the sensors, gently clean the affected areas with a soft cloth or brush to remove the obstruction.
- Wait for Conditions to Improve: If the "radar obstructed" message is due to inclement weather, simply wait for the conditions to improve, and the sensors should resume normal operation.
- Consult Your Acura Dealer: If the "radar obstructed" warning persists or you suspect a more serious issue, it's best to have your Acura inspected by a qualified technician at your local Acura dealership.
By understanding the common causes and resolving any issues with the radar sensors, you can help ensure your Acura's advanced safety features continue to function as intended.
What does radar obstructed mean in Acura MDX?
Radar Obstructed and Clean Front Windshield
Anything covers the radar sensor cover or the area around the front sensor camera preventing detection of a vehicle in front. May appear when driving in bad weather (rain, snow, fog, etc.). Stop your vehicle in a safe place and clear the area using a soft cloth.
What does it mean if your car says front radar obstruction?
Off. So that warning light you'll notice here. It looks like two cars colliding. Don't worry about that. Warning light it's just telling you that your forward emergency braking has been disengaged.
How to fix radar obstructed?
To fix a "radar obstructed" message, safely pull over and clean the radar sensor with a soft cloth, which is often located behind the front emblem or grille. If cleaning doesn't work, turn the vehicle off, wait a few minutes, and restart it to allow the system to recalibrate. If the message persists, the sensor may be misaligned or damaged, requiring professional inspection.
This video shows how to identify the radar sensor and clean it: 59sWheaton HondaYouTube · Nov 29, 2019
Step 1: Clean the sensor
- Pull over to a safe location and turn off the vehicle.
- Locate the radar sensor, which is typically behind the front grille or emblem on the front of the vehicle. Consult your owner's manual if you are unsure of its location.
- Gently clean the sensor area with a soft, damp cloth to remove any dirt, snow, ice, or debris. Avoid using harsh chemicals or abrasive materials.
- While you're at it, clean any cameras, such as the front-facing camera behind the windshield, as they are often part of the same system.
Step 2: Reset the system
- Turn the vehicle completely off and wait for 2 to 3 minutes.
- Restart the engine and drive for 5 to 10 minutes at moderate speeds.
- The system may automatically recalibrate and the warning message should clear.
This video demonstrates how to reset the radar obstruction warning in a Nissan vehicle: 44sNexologyYouTube · Sep 3, 2025
Step 3: Seek professional help
- If the warning reappears, especially in good weather or after a minor bump, the sensor may be misaligned.
- If you have recently installed any aftermarket accessories, they could be blocking the sensor.
- A professional mechanic or dealership can diagnose and recalibrate the sensor, or repair any damage to the bracket or sensor itself.
Why does my Honda say some driver assist systems cannot operate radar obstructed?
The most likely cause is that something like snow freezing rain or mud is blocking your vehicle's radar. And preventing it from working properly.
