Ford F-250 & Ford F-350 The heavier duty full sized trucks from Ford, offering bigger, more powerful engines and drivetrains for the abuse they may go through in the workplace.

99 Super Duty no daytime running lights and no low beams

Old Dec 19, 2019 | 09:51 AM
  #1  
Wayne Elliott's Avatar
Thread Starter
|
Junior Member
Joined: Dec 2019
Posts: 2
Default 99 Super Duty no daytime running lights and no low beams

I have high beams. (tells me my light switch is good) flash to pass and park lights. The daytime running lights and low beams went out at the same time. I checked the bulbs and connections at the lights, all good. There is no power to low beams. All fuses are good. At this point, I am thinking it's either the multi function switch or a relay that is common to both. Does anyone know where that relay(s) are located? Any other ideas? tnx
 
Old Dec 19, 2019 | 03:33 PM
  #2  
hanky's Avatar
Senior Member
Joined: Jun 2010
Posts: 16,670
Default

Hi Wayne,
If you have your owners manual check pages 150 & 151.
They should show you the 2 fuses for low beams and where they are located .
If not , get back to us , thanks
You could be correct suspecting the multi function switch, but all the info you need to check should be able to be found .
If by any chance, was the windshield ever replaced in your vehicle?
The reason I ask is they did have some water intrusion problems where moisture got into the fuse panel and corrosion became a serious problem.
 

Last edited by hanky; Dec 19, 2019 at 03:39 PM.
Old Dec 19, 2019 | 03:49 PM
  #3  
Wayne Elliott's Avatar
Thread Starter
|
Junior Member
Joined: Dec 2019
Posts: 2
Default

Originally Posted by hanky
Hi Wayne,
If you have your owners manual check pages 150 & 151.
They should show you the 2 fuses for low beams and where they are located .
If not , get back to us , thanks
You could be correct suspecting the multi function switch, but all the info you need to check should be able to be found .
If by any chance, was the windshield ever replaced in your vehicle?
The reason I ask is they did have some water intrusion problems where moisture got into the fuse panel and corrosion became a serious problem.
Hi, I checked all the fuses including the one for the drl resistor and all are good. I have no manual, but found the diagram online. The windshield was never replaced. Is there a relay? I can't seem to find good info on that. It has to be something common to both low beams and daytime running lights.

 
Old Dec 20, 2019 | 12:01 AM
  #4  
Hayapower's Avatar
Super Moderator
Joined: Jul 2006
Posts: 7,555
Default

Low beams power distribution as well as DRL function come through multiple fuses (checked good with meter or light?) in the Power Distribution Box and through the DRL relays in the DRL Relay Block on the the right/pass side of Instrument Panel..
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Richard Gary Pace
Ford Escape
3
May 18, 2019 08:38 AM
youthpastorrich
Ford F-250 & Ford F-350
5
Sep 4, 2017 06:13 AM
Shaggy773
Ford Econoline E Series
2
Sep 5, 2016 08:40 PM
cstrucking
Ford F-250 & Ford F-350
3
Jan 19, 2012 12:18 PM
ironjaw
General Tech
2
Mar 29, 2011 07:19 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:40 AM.