Why would one not be able to turn on the headlights of a 2000 Oldsmobile Intrigue manually Automatic only A few posts say replacing ignition switch fixes lot issues Would this work?

The inability to manually turn on the headlights in a 2000 Oldsmobile Intrigue, even though they work automatically, points to a problem beyond just a blown bulb. The fact that several posts suggest replacing the ignition switch as a solution suggests the problem likely lies within the car's electrical system, and the ignition switch is a central component.

Here's why the ignition switch might be the culprit, and why other issues could be involved:

* Ignition Switch Controls More Than Just Starting: The ignition switch is a multi-position switch that controls power to various parts of the car's electrical system. Headlight circuits (both manual and automatic) might be routed through the switch, even if you don't think of it as directly controlling them. A faulty switch could interrupt the power flow to the manual headlight circuit while leaving the automatic circuit (likely controlled by a separate sensor) functional.

* Wiring Issues: Damaged or corroded wiring between the ignition switch, the headlight switch, and the headlights themselves could also cause this problem. A faulty connection would prevent power from reaching the manual headlight circuit.

* Headlight Switch Itself: While less likely given the automatic headlights work, a problem *within* the headlight switch itself could be causing the manual function to fail. A broken internal component could interrupt the manual circuit.

* Fuse or Relay: A blown fuse or a malfunctioning relay specific to the manual headlight circuit is another possibility.

Would replacing the ignition switch fix it?

It *might*. If the problem is a faulty ignition switch interrupting power to the manual headlight circuit, replacing it would likely solve the problem. However, it's not a guaranteed fix. If the problem lies in the wiring, the headlight switch itself, a fuse, or a relay, replacing the ignition switch won't address the root cause.

Before Replacing the Ignition Switch:

1. Check the fuses: Locate the fuse box (usually under the hood or the dashboard) and check the fuses related to the headlights.

2. Inspect the headlight switch: Look for any obvious damage or loose connections. This is usually located on the steering column.

3. Check the wiring: If you're comfortable working with car electrical systems, visually inspect the wiring harness leading to and from the headlight switch and the headlights for any damage or corrosion.

Replacing the ignition switch is a more involved repair and should only be attempted if you're comfortable working with car electrical systems or you have a qualified mechanic do it. Diagnosing the problem step-by-step is crucial to avoid unnecessary expenses.