Acura RDX Warning Lights: What They Mean

Amber: check soon

Adaptive Cruise Control (ACC) with Low Speed Follow Indicator (Amber)

There is a problem with ACC with Low Speed Follow; it may come on briefly if the maximum load limit is exceeded.
What to do: If it stays on, have a dealer check the vehicle. Make sure the total load is within the limit. PDF page 105

Lane Keeping Assist System (LKAS) Indicator (Amber)

There is a problem with the LKAS.
What to do: If it stays on constantly, have a dealer check the vehicle. PDF page 105

Other warnings and indicators

Charging System Indicator

There is a problem with the charging system.
What to do: Stop in a safe place and have a dealer check the vehicle immediately. If stopping temporarily, do not turn off the engine. PDF page 671

Malfunction Indicator Lamp

Steady: engine emissions control system problem. Blinking: engine misfire detected.
What to do: If on, avoid high speeds and see a dealer immediately. If blinking, park safely and wait at least 10 minutes with the engine off. PDF page 671

Low Tire Pressure/TPMS Indicator

A tire pressure is significantly low. Blinking about a minute then staying on indicates a TPMS problem.
What to do: Drive carefully, stop safely, and set tire pressure to the specified level. If blinking, have a dealer inspect the tire soon. PDF page 675

Green: system on

Adaptive Cruise Control (ACC) with Low Speed Follow Indicator (White/Green)

White when the ACC button is pressed; green while the system is operating. PDF page 105

Lane Keeping Assist System (LKAS) Indicator (White/Green)

White when the LKAS button is pressed; green when the LKAS is operating. PDF page 105

Summarized in our own words from the 2026 Acura RDX owner's manual (AI-assisted; every light name was matched against its cited page 2026-10-18). Your vehicle may not have every light, and other years can differ. A red warning that stays on usually means stop safely and check: your manual has the final word.