Buick Cascada Warning Lights: What They Mean

Amber: check soon

Lane Departure Warning (LDW) Light

Green when LDW is on and ready; flashing amber means a lane marking was crossed without a turn signal. PDF page 109

Other warnings and indicators

Airbag Readiness Light

Electrical problem in the airbag system; airbags might not inflate in a crash or could inflate without one.
What to do: Have the vehicle serviced right away. PDF page 104

Charging System Light

Possible problem with the electrical charging system; driving with it on could drain the battery.
What to do: Have it checked by your dealer; if driving a short distance, turn off all accessories. PDF page 105

Malfunction Indicator Lamp (Check Engine Light)

Emission control system malfunction detected while engine runs; vehicle may need service.
What to do: Seek service promptly to prevent damage; continued driving can reduce emission control, fuel economy and smoothness. PDF page 105

Antilock Brake System (ABS) Warning Light

If it stays on while driving, the antilock brakes have a problem; normal brakes still work unless the brake warning light is also on.
What to do: Stop, turn ignition off, restart to reset; if light stays on above 20 km/h (13 mph), see your dealer. PDF page 108

Service Electric Parking Brake Light

Staying on means a problem with the Electric Parking Brake or another system reducing parking brake performance.
What to do: Vehicle can still be driven but should go to a dealer as soon as possible. PDF page 108

Electric Parking Brake Light

Comes on when the brake is applied; continued flashing after release or while driving means an Electric Parking Brake problem.
What to do: If it does not come on or keeps flashing, see your dealer. PDF page 108

Power Steering Warning Light

If it stays on or comes on while driving, the power steering system may not be working.
What to do: See your dealer for service. PDF page 109

Engine Oil Pressure Light

If it stays on, oil is not flowing through the engine properly; the vehicle may be low on oil or have another problem.
What to do: Check the oil level soon, add oil if needed, and see your dealer. PDF page 111

Low Tire Pressure Warning Light

One or more tires are significantly under-inflated; flashing then staying on indicates a TPMS malfunction.
What to do: Stop as soon as possible and inflate tires to the pressure on the Tire and Loading Information label. PDF page 222

Low Fuel Warning Light

Vehicle is low on fuel; a chime sounds. It turns off when fuel is added. PDF page 111

Security Light

If it stays on and the engine will not start, there may be a problem with the theft-deterrent system. PDF page 111

Operate Pedal Light

The brake pedal needs to be applied to release the Electric Parking Brake. PDF page 108

Green: system on

Vehicle Ahead Indicator

Shows when a vehicle is detected ahead. PDF page 109

Summarized in our own words from the 2019 Buick Cascada 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.