Cadillac OPTIQ Warning Lights: What They Mean

Red: stop or act now

Brake System Warning Light

A brake problem exists; may also come on if brake fluid is low. Vehicle speed may be limited and braking effort may change.
What to do: Pull off the road and stop carefully. Have the brake system inspected; if the light stays on, have the vehicle towed. PDF page 97

Amber: check soon

Low State of Charge Light

The vehicle state of charge is low.
What to do: Proceed to a charging station to charge the vehicle. PDF page 96

All-Wheel-Drive Light

Amber means the electric all-wheel drive system is limited. Red means there may be a malfunction.
What to do: If red, see your dealer. PDF page 98

Pedestrian Ahead Indicator

A nearby pedestrian is detected in front of the vehicle. PDF page 100

Other warnings and indicators

Charging System Light (12-Volt Battery)

A possible problem with the electrical charging system; driving with it on could drain the 12-volt battery.
What to do: Have it checked by your dealer. If driving a short distance, turn off accessories and find a safe place to stop. PDF page 96

Battery Fault Light

A fault exists with the high voltage battery. A Driver Information Center message may also appear.
What to do: See your dealer for service. PDF page 97

Antilock Brake System (ABS) Warning Light

ABS needs service. If only this light is on, regular brakes work but ABS does not; with the brake light, regular brakes have a problem too.
What to do: See your dealer for service. PDF page 98

Service Electric Parking Brake Light

A problem with the Electric Parking Brake; other safety functions using it may also be degraded.
What to do: Take the vehicle to a dealer as soon as possible. PDF page 98

Electric Parking Brake Light

Parking brake is applied. Continued flashing after release, or while driving, indicates a problem with the Electric Parking Brake system.
What to do: If the light does not come on or remains flashing, see your dealer. PDF page 98

Traction Control System (TCS)/Electronic Stability Control Light

If on and steady, TCS and possibly StabiliTrak/ESC are not fully operational. Flashing means the system is actively working.
What to do: Adjust driving accordingly. If the condition persists, see your dealer as soon as possible. PDF page 100

Service Vehicle Soon Light

A condition exists that may require the vehicle to be taken in for service.
What to do: Take the vehicle to your dealer for service as soon as possible. PDF page 97

Airbag Readiness Light

If it comes on and stays on, something may be wrong with the airbag system.
What to do: Have the vehicle serviced right away. PDF page 96

Propulsion Power is Limited Light

Vehicle propulsion power is limited, which may affect acceleration; maximum acceleration and speed may be limited.
What to do: The vehicle may be driven while the lights are on. PDF page 97

Electronic Stability Control (ESC) Off Light

StabiliTrak/Electronic Stability Control system is turned off, which also turns off traction control. PDF page 100

Service Headlight System Indicator

Comes on solid when there is a problem with the headlight system. PDF page 102

Charge Cord Connected Light

A charge cord is connected to the vehicle. PDF page 96

Vehicle Ready Light

The vehicle is ready to be driven. PDF page 102

High-Beam On Light

The high-beam headlamps are in use. PDF page 102

IntelliBeam Light

The IntelliBeam system is enabled. PDF page 102

Lamps On Reminder

Exterior lamps are in use, except when only Daytime Running Lamps are active. PDF page 102

White: information

Cruise Control Light

White when cruise control is on and ready; turns green when cruise is set and active. PDF page 102

Summarized in our own words from the 2025 Cadillac OPTIQ 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.