2. Check the headlight switch. Make sure that switch is in the "Off" position. If the headlight switch is in the "Off" position and the headlights are still on, then the problem may be with the switch itself.
3. Inspect the automatic headlights. Some Pontiac Vibes have automatic headlights. If your Vibe has automatic headlights, make sure they are turned off.
4. Check the daytime running lights. Some Pontiac Vibes have daytime running lights. If your Vibe has DRLs, make sure they are turned off.
5. Check the relays and fuses. There are several relays and fuses that control the headlights. If one of these components is faulty, it can cause the headlights to stay on even when the car is off.
6. Inspect the wiring. The wiring that controls the headlights may be damaged or corroded. If this is the case, it can cause the headlights to stay on even when the car is off.