Car Warning Light Decision Tree — Can You Drive or Stop Immediately?
Dashboard Warning Light? Use This Decision Tree
Not sure whether to pull over or keep driving? Answer these quick questions.
Step 1: What color is the warning light?
Red Light
Which red light is on?
Yellow/Amber Light
Which yellow light is on?
Blue or Green Light
Normal Operation
You are fine to drive normally. Blue or green lights are informational only — high beams, cruise control, or ECO mode active. No action needed.
This is a general guide. Always consult your vehicle owner’s manual for model-specific warning lights and procedures. For more detail, see our Dashboard Warning Lights Guide and OBD2 Code Reference.