Acura TSX Warning Lights: What They Mean

Red: stop or act now

Parking Brake and Brake System Indicator

Parking brake is applied, brake fluid is low, or the brake system has a problem; beeper sounds if driving with parking brake not fully released.
What to do: Make sure parking brake is released and check brake fluid level. If it comes on with the ABS indicator, have a dealer inspect the vehicle immediately. PDF page 65

Low Oil Pressure Indicator

Engine oil pressure is low.
What to do: Immediately park safely, stop engine, wait a minute, check oil and add if needed. If light stays on over 10 seconds after restart, call a dealer. PDF page 291

Charging System Indicator

The 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 off the engine if stopping temporarily. PDF page 291

Amber: check soon

Malfunction Indicator Lamp

Emissions control problem or loose/missing fuel cap; blinking means engine misfire detected.
What to do: If on, avoid high speeds and see a dealer promptly. If blinking, park safely away from flammables, stop engine 10+ minutes to cool, then go to a dealer. PDF page 292

ABS (Anti-lock Brake System) Indicator

If on other than briefly at start-up, the ABS has a problem. Normal braking remains but without anti-lock function.
What to do: Have the vehicle checked by a dealer. PDF page 67

Other warnings and indicators

Low Tire Pressure/TPMS Indicator

A tire pressure is significantly low. Blinking then staying on indicates a TPMS problem or compact spare installed.
What to do: Stop safely, check and adjust tire pressure to the specified level. If blinking, have a dealer inspect the tire soon. PDF page 294

Transmission Indicator

Blinks if the transmission system has a problem.
What to do: Avoid sudden starts and acceleration and have a dealer check the vehicle immediately. PDF page 66

Seat Belt Reminder Indicator

Driver or front passenger has not fastened a seat belt; beeper sounds.
What to do: Fasten seat belts. If it stays on after buckling, have a dealer check the sensor. PDF page 67

Low Fuel Indicator

Fuel reserve is running low (about 2.8 U.S. gal/10.5 L left); blinking means a fuel gauge problem.
What to do: Refuel as soon as possible. If blinking, have a dealer check the vehicle. PDF page 67

Summarized in our own words from the 2013 Acura TSX 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.