Cadillac DTS Warning Lights: What They Mean

Red: stop or act now

Brake System Warning Light

Indicates a brake problem, or that the parking brake is set or not fully released. Driving with it on can cause a crash.
What to do: If it comes on while driving, pull off and stop carefully. If it stays on, have the vehicle towed for service. PDF page 206

Other warnings and indicators

Antilock Brake System (ABS) Warning Light

Stays on or comes on while driving when the ABS needs service; the regular brakes still work unless the brake light is also on.
What to do: Stop safely, turn the ignition off, and restart. If the light stays on or returns, the vehicle needs service. PDF page 207

Traction Control System (TCS) Warning Light

Staying on means the traction control has a problem and will not limit wheel spin. Flashing means the system is limiting wheel spin.
What to do: Have the vehicle serviced if the light stays on; adjust your driving accordingly. PDF page 207

StabiliTrak® Indicator Light

Staying on means the StabiliTrak system is off and not limiting wheel spin. Flashing means the system is actively assisting directional control.
What to do: If it stays on while driving, the vehicle might need service. PDF page 208

Low Tire Pressure Warning Light

One or more tires are significantly under-inflated. Flashing for about a minute then staying on indicates a TPMS malfunction.
What to do: Stop as soon as possible and inflate the tires to the pressure on the tire loading information label. PDF page 363

Green: system on

Lane Departure Warning (LDW) Light

Green when a lane marking is detected. Flashes amber with three beeps if a lane marking is crossed without a turn signal. PDF page 208

Summarized in our own words from the 2011 Cadillac DTS 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.