Acura TL Warning Lights: What They Mean

Red: stop or act now

Door/Trunk Open Indicator

A door or the trunk lid is not closed tightly. PDF page 77

Other warnings and indicators

Vehicle Stability Assist (VSA) System Indicator

Flashes when VSA is active. Staying on at other times means a problem with VSA or Hill Start Assist, which then won't work.
What to do: Drive cautiously, pull over safely, turn off engine and restart to reset; if it stays on, have a dealer inspect it. PDF page 516

Keyless Access System Indicator

Staying on or coming on at other times means a keyless access or keyless starting system problem; the vehicle may not restart.
What to do: Have the dealer check it as soon as possible. PDF page 80

SH-AWD Indicator

Blinking while driving means the differential temperature is too high; continued driving may seriously damage the system.
What to do: Pull over safely, shift to Park, and idle the engine until the indicator goes out. PDF page 80

Blind Spot Information System (BSI) Indicator

Coming on at other times means a BSI problem and BSI is not working; it also comes on if the rear bumper is dirty.
What to do: Take the vehicle to a dealer; if the bumper is dirty, clean it. PDF page 81

VSA OFF Indicator

Reminds you that the vehicle stability assist system has been turned off. PDF page 74

Side Airbag Off Indicator

Passenger's side airbag has been automatically shut off; this does not mean a side airbag problem.
What to do: If it doesn't light at ignition, stays on, or lights with no front passenger, have the system checked. PDF page 39

System Message Indicator

A system message is showing on the multi-information display, often along with other indicators.
What to do: Press the INFO button on the steering wheel to see the message. PDF page 78

Lights On Indicator

Reminds you the exterior lights are on, including when they stay on with the ignition off; beeps sound when the driver's door opens. PDF page 77

High Beam Indicator

High beam headlights are on; it also glows dimmer when daytime running lights are on. PDF page 77

Fog Light Indicator

The fog lights are turned on. PDF page 77

Cruise Main Indicator

The cruise control system has been turned on with the CRUISE button. PDF page 78

Cruise Control Indicator

Cruise control has been set. PDF page 78

Security System Indicator

The security system is set. PDF page 78

Summarized in our own words from the 2014 Acura TL 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.