Acura Safety Support indicator

How to read it

On the 2025 MDX, Acura’s manual gives one Safety Support indicator for Road Departure Mitigation, CMBS, Low Speed Braking Control, the blind spot information system, Lane Change Collision Mitigation and Front Cross Traffic Warning, some of which are not on every model. It lights up in green when all of them are on, in gray when all are off, and in green and gray when one or more is off. The 2025 Integra’s indicator covers Road Departure Mitigation, CMBS, Low Speed Braking Control, the blind spot information system and the parking sensor system. Older Acuras such as the 2021 RDX have separate lights instead: the CMBS indicator and the RDM indicator.

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When the amber light comes on

The MDX manual says the amber light comes on if there is a problem with any of these systems, and when Road Departure Mitigation, CMBS, Lane Change Collision Mitigation or Front Cross Traffic Warning shuts itself off. That happens while the temperature inside the camera is too high, or while the camera or the radar sensor is blocked by dirt or mud, or the radar sensor by a trailer being towed. It may come on for a while in a tunnel, on an open road with no structures nearby, at night, dawn or dusk, or when the Maximum Load Limit is exceeded. Mud, snow or ice around the sonar or the blind spot information system sensor turns it on as well. After the battery has been disconnected and reconnected, the systems are deactivated for a time and the light comes on; the manual says it should go off once the steering wheel has been turned as far as it goes each way, with the engine running, and the car driven a short distance at more than 20 km/h (12 mph). On the Integra a problem with the parking sensor turns it on too.

What the manual says to do

For an amber indicator that stays on, the 2025 MDX manual says: “Stays on constantly - Have your vehicle checked by a dealer.”

What NHTSA calls them

NHTSA calls a system like CMBS automatic emergency braking, which applies the brakes automatically when a forward collision is imminent. It describes blind spot warning, which warns of a vehicle in the driver’s blind spot, and lane keeping assistance, which automatically and gently steers to prevent the vehicle from leaving the lane, as separate technologies. NHTSA notes that makers use different names for the same driver assistance technologies.