Cadillac CTS-V Warning Lights: What They Mean

Red: stop or act now

Brake System Warning Light

Brake system may not work properly; on with parking brake set, flashes if parking brake not fully released, or stays on if base brake problem.
What to do: Do not drive with it on. If still on after stopping safely off the road, have the vehicle towed for service. PDF page 114

Other warnings and indicators

Engine Coolant Temperature Warning Light

If it stays on while driving, the cooling system may have a problem. A chime sounds with the light.
What to do: Stop and turn off the vehicle to avoid engine damage. PDF page 116

Antilock Brake System (ABS) Warning Light

If it stays on or comes on while driving, the antilock brakes are unavailable and the vehicle needs service. Regular brakes remain if brake light is off.
What to do: Stop safely, turn ignition off, restart to reset. If light stays on or returns, have the vehicle serviced. PDF page 115

Parking brake light

Indicates a system problem is making the parking brake work at a reduced level. The vehicle can still be driven.
What to do: Take the vehicle to a dealer. PDF page 114

Traction Control System (TCS)/StabiliTrak Light

Steady: TCS and possibly StabiliTrak are disabled. Flashing: TCS and/or StabiliTrak is actively working.
What to do: Check the DIC messages to see which feature is not working and whether service is needed. PDF page 116

StabiliTrak OFF Light

StabiliTrak is turned off, and Traction Control is also off, so the system does not help control the vehicle.
What to do: Turn the TCS and StabiliTrak systems back on to turn the light off. PDF page 115

Passenger Airbag Status Indicator

ON means the front passenger airbag may inflate; OFF means the sensing system turned it off. Both lit or neither lit suggests a problem.
What to do: If both or no lights stay on after several seconds, see your dealer for service. PDF page 110

Up-Shift Light

Shows when to shift to the next higher gear for best fuel economy. PDF page 115

Summarized in our own words from the 2015 Cadillac CTS-V 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.