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Headlight Switch question, what is the function of the four settings?

Tiny
OREO101
  • MEMBER
  • 2005 FORD EXPEDITION
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Hi, I lost my owner's manual to check this.
May be a stupid question.
What is the function of the 4 settings?
I think I have a parasitic drain on battery.
I have a new battery and I fully charge but it will be drained in 2 days.
I understand that I can pull the negative battery cable then put a multimeter set at DC milliamps and if I get from 20 to 50 milliamps that's okay but anything above 50 there's a definite high drain?
Thanks for all your help!
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Wednesday, February 8th, 2023 AT 4:28 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,328 POSTS
Hi,

Based on the switch you have, from left to right the settings are:

1) Automatic
2) Off
3) Parking lamps
4) Headlamps
5) For Lamps/which requires you to press the toggle switch
6) Interior/cluster dimmer switch.

Is that what you needed?

Let me know. Also, take a look through this link that describes how to locate a parasitic draw.

https://www.2carpros.com/articles/car-battery-dead-overnight

Let me know if this helps or if there is anything I can do to help.

Take care,

Joe

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Wednesday, February 8th, 2023 AT 7:44 PM
Tiny
OREO101
  • MEMBER
  • 82 POSTS
Yes, that helps! I thought the first position from the left was for fog lights?
Thanks for this!
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Wednesday, February 15th, 2023 AT 11:45 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,328 POSTS
Hi,

You are very welcome. The fog lights turn on by pressing the headlamp switch. Nothing is ever simple anymore. LOL They had to throw a push button in there, too.

If you need help or have other questions, let me know.

Take care,

Joe
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Thursday, February 16th, 2023 AT 5:01 PM

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