Acura MDX Sport Hybrid Warning Lights: What They Mean

Red: stop or act now

Brake System Indicator (Red)

Brake fluid is low or the brake system has a malfunction.
What to do: Press the brake pedal lightly to check it. If abnormal, act immediately, downshifting if needed. Have the vehicle repaired right away. PDF page 646

Other warnings and indicators

Low Oil Pressure Indicator

Engine oil pressure is low.
What to do: Stop immediately in a safe place, turn the power system off, wait three minutes, check the oil level, and contact a dealer if the light stays on. PDF page 644

Malfunction Indicator Lamp

Problem with the emissions control systems; blinking means an engine cylinder misfire is detected.
What to do: If on, have a dealer check the vehicle. If blinking, stop safely, shut off the power system for 10 minutes or more, then see a dealer. PDF page 90

12-Volt Battery Charging System Indicator

The 12-volt battery is not being charged.
What to do: Turn off climate control, rear defogger and other electrical loads, and contact a dealer immediately. Avoid turning the power system off when stopping. PDF page 644

Electric Parking Brake System Indicator

There is a problem with the electric parking brake system.
What to do: Avoid using the parking brake and have a dealer inspect the vehicle immediately. PDF page 647

Speed-Sensitive Electric Power Steering (EPS) System Indicator

There is a problem with the EPS system; steering may sometimes become harder to operate.
What to do: Stop in a safe place and restart the power system. If it stays on, have a dealer inspect it immediately. PDF page 646

Low Tire Pressure/TPMS Indicator

A tire pressure is significantly low. Blinking then staying on indicates a TPMS problem or a compact spare installed.
What to do: Drive carefully, stop safely, and set tires to specified pressure. If blinking, have a dealer inspect the tire soon. PDF page 648

POWER SYSTEM Indicator

There is a problem with the electric vehicle system.
What to do: If it comes on while driving, have a dealer check the vehicle immediately. PDF page 93

Transmission System Indicator

Blinking with a warning message means the transmission is malfunctioning.
What to do: Have the vehicle inspected by a dealer immediately. PDF page 648

Electric Parking Brake Indicator

Shows the parking brake is applied; blinking with the system indicator means a problem and the brake may not set.
What to do: Press the brake pedal to release the brake if prompted. If it stays on or blinks after release, stop safely and call a dealer. PDF page 88

Seat Belt Reminder Indicator

Driver or front passenger is not wearing a seat belt; the beeper sounds and the indicator blinks while driving.
What to do: Fasten seat belts. If it stays on after buckling, have a dealer check for a sensor detection error. PDF page 93

Low Fuel Indicator

Fuel is running low, about 2.5 U.S. gal. left; blinking means a fuel gauge problem.
What to do: If on, refuel as soon as possible. If blinking, have a dealer check the vehicle. PDF page 93

Summarized in our own words from the 2020 Acura MDX Sport Hybrid 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.