Hyundai Tucson Warning Lights: What They Mean

Red: stop or act now

Engine oil pressure warning light

Engine oil pressure is low. Continued driving can cause engine failure, and engine power may be limited.
What to do: Stop safely, turn engine off, check oil level and add oil. If light stays on, have dealer inspect. PDF page 96

Parking brake warning light

Parking brake is applied. If it stays on after release with engine running, the brake system may be malfunctioning.
What to do: Release the brake before driving. If it stays on, stop driving if possible, or drive cautiously only to a safe location. PDF page 213

Airbag warning light

Comes on for 3-6 seconds at startup; staying on indicates a Safety Restraint System (SRS) malfunction.
What to do: If it stays on while driving, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 93

Seat belt warning light

The driver's seat belt is not fastened.
What to do: Fasten the seat belt. PDF page 93

Amber: check soon

Malfunction Indicator Lamp (MIL)

Malfunction in the emission control system, engine or powertrain. Driving with it on may damage the emission system or catalytic converter.
What to do: If it stays on while driving, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 97

Intelligent Speed Limit Assist indicator light

Yellow when the system is disabled, the front view camera is blocked, or a malfunction is detected.
What to do: If it stays on after the camera is uncovered, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 102

Other warnings and indicators

Motor Driven Power Steering (MDPS) warning light

Comes on for about 3 seconds at startup; staying on means a power steering malfunction.
What to do: If it stays on while driving, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 96

Low fuel level warning light

The fuel tank is nearly empty. Driving on empty may cause engine misfire and catalytic converter damage.
What to do: Refuel the vehicle as soon as possible. PDF page 96

Electronic Stability Control (ESC) indicator light

Comes on briefly at startup; staying on means an ESC malfunction. Blinks while ESC is operating.
What to do: If it stays on, have the vehicle inspected by an authorized HYUNDAI dealer as soon as possible. PDF page 105

Electronic Stability Control (ESC) OFF indicator light

Comes on briefly at startup and when ESC is deactivated with the ESC OFF button. PDF page 105

Downhill Brake Control (DBC) indicator light

Green when DBC is activated, blinking green when operating. Yellow means a DBC malfunction.
What to do: If the yellow light stays on, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 105

Immobilizer indicator light

On when the smart key is detected; blinking means key not in vehicle or an immobilizer malfunction.
What to do: If the key is not detected or it blinks for a malfunction, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 106

Speed Limiter indicator light

The speed limiter is enabled. PDF page 102

Green: system on

Turn signal indicator light

Blinks when the turn signal lever is operated. Staying lit, rapid blinking, or not lighting suggests a malfunction.
What to do: If it behaves abnormally, have the vehicle inspected by an authorized HYUNDAI dealer. PDF page 107

Lane Following Assist indicator light

Green when Lane Following Assist is operating, grey when conditions are not met, and blinks white when steering assist is cancelled. PDF page 102

High Beam Assist indicator light

White when High Beam Assist is ready, green when operating. It switches high beam to low beam for other vehicles. PDF page 107

Low beam indicator light

The headlights are on. PDF page 107

AUTO STOP indicator light

The engine is in Idle Stop mode of the ISG system; it turns white when the engine restarts automatically. PDF page 106

Blue: system on

High beam indicator light

Headlights are on with the lever in high beam position, or the lever is pulled to Flash-to-Pass. PDF page 107

Summarized in our own words from the 2026 Hyundai Tucson 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.