1. Check the Fuse:
* Locate the fuse box: This is usually under the dashboard, possibly under the steering wheel or on the driver's side. Consult your owner's manual for the exact location and fuse diagram.
* Identify the cigarette lighter fuse: The diagram will show which fuse is for the lighter. It's often labeled as "Cigarette Lighter," "Power Outlet," or a similar designation.
* Inspect the fuse: Look for a blown fuse (a broken filament inside the glass). Replace it with a fuse of the same amperage rating. Don't use a higher amperage fuse, as this could cause further damage.
2. Check the Lighter Itself:
* Inspect the element: The lighter element is the metal part that glows when heated. Check for any obvious damage, like bending or breakage. A damaged element will need replacing.
* Clean the lighter socket: Dust, debris, or corrosion can prevent proper contact. Use compressed air or a small brush to clean the socket.
3. Check the Wiring:
* Test for power at the lighter socket: With the ignition switched on, use a multimeter (set to DC voltage) to check for power at the lighter socket's terminals. You should see 12 volts. If no power is present, the problem lies further back in the wiring.
* Trace the wiring: This is more complex and requires some electrical knowledge. If you're not comfortable with this, take it to a mechanic. The wiring might be damaged, corroded, or loose somewhere along its path. This could involve checking the connections at the fuse box and following the wire back to the lighter.
4. Replace the Lighter:
* If the element is broken or the socket is severely damaged, you'll need to replace the entire cigarette lighter assembly. These are relatively inexpensive parts and can usually be found at auto parts stores. Installation is generally straightforward, involving removing the old unit and plugging in the new one.
Important Considerations:
* Safety First: Always disconnect the negative battery cable before working on the electrical system. This prevents accidental shorts and shocks.
* Owner's Manual: Your owner's manual is an invaluable resource. It contains diagrams of the fuse box, wiring diagrams, and other helpful information.
* Professional Help: If you're not comfortable working with car electrical systems, take your Aerostar to a qualified mechanic. Improper repairs can lead to further damage or even fire hazards.
By systematically following these steps, you should be able to diagnose and fix the problem with your 1993 Ford Aerostar's cigarette lighter. Remember to prioritize safety and seek professional help if needed.
