Help!

2005 F150 4x4 KR.

All four power windows will not go down. No switch on any of the four doors will bring any window down. The lights also do not work on the window buttons on the door arm rests. My immediate reaction is that its a fuse, but does anyone have any other thoughts. I have read about relays going bad. Any idea which relay controls the windows?

Thanks in advance. Happy New Year.

 

I had the same problem with my Lightning about a month ago. Power windows would not work neither would the interior lights, mine was just the fuse. I cant remember what number it was. I just put a new fuse in and was good to go. Hope its as easy as a fix for you.
Happy New Year

 

There is only 1 relay in the window system itself, and that is for the 1 touch down function on the driver's side. All other functions are from the switch to the window motor ( passenger and rear windows 100%, and the driver's side for normal up and down ).

On the SCrew it is a 30 A circuit breaker, that should reset ( unless the CB went bad ).

The instrument illumination is from a different circuit, same one that illuminates the ash tray, 4x switch, buttons on the steering wheel, etc.

The relay that is not part of the window function, that could cause the problem is the accessory delay relay. This is the relay that allows the windows to be operated after turning off the key, until the doors are opened.

This relay is operated by the GEM ( GEM grounds the relay coil for the use time ).

Q1. Do any of the other illumination noted above work ( 4x selector switch, steering wheel buttons, etc ).

Q2. Do any of the other door items work ( power locks, power mirrors )

Q3. Do the Cigar lighter, and DC power ports still work ?

I am thinking a problem with the ground around splice S500 in the door.

You could take the door switch panel off, and on the master window switch connector, pin #1 ( on Connector C509 ) or pin #2 ( on Connector C510 ) test for ground from the switch to a known good ground in the truck ( outer ring of the cigar lighter, if they still work ). This should be a very low resistance between them, when tested with a meter.

Pin #1 & pin #2 are black wires in the connectors on the SuperCrew window, just look at the back of the switch connector for the wire color.
C509 has 1 pin on either side of the tab lock, 5 pins in the second row.
C510 has pins 1&2 on one side of the tab lock, and pin 3 on the other side, with 4 pins on the second row.

 

From the bottom of my heart, thanks for taking the time to explain all this, sir.

The answer to all three Q's is in the AFFIRMATIVE; all items mentioned function fully. I'll first start with the 30 A fuse as suggested by Riceetgbolt and yourself. If that doesn't cover it, I'll progress through the steps you explained so well.

Again, happiest New Year to everyone.

 

I've got the same problem. I've checked the relays and even swapped them and they are good. Read this link, this guy had a broken wire. I haven't had time to dive into mine yet but I need to. It really bites when the windows don't work.

https://www.f150online.com/forums/el...s-down-up.html

 

If the power locks, and mirrors still work, it is not a ground. They use the same splice in the door, and the same ground point as the cigar lighter.

The burnt out illumination on the switch could be separate, so lets focus on if there is power to the switch ( BTW, I think I crossed my MY trucks here so this post has the 04+ MY pin assignments ).

The first place to check is the accy delay relay. pull this relay out, and check pin 30 for power to a known good ground ( lower right hand corner of the fuse panel on the '04 + MY trucks ).

You are pulling a full size ISO Ford relay, which is the same pin numbers as a Bosch type relay


If pin # 30 has power, you can jumper the pin #30 to pin # 87 ( as shown in the diagram, that is looking into the socket ).

With this jumpered, you should have power at the master door switch connector. Take the switch off, and pin # 8, light blue w/ black stripe wire should have power to it with the jumper in place, test with a meter to a known good ground in the truck ( ring in the cigar lighter, as you said thee are working correctly, not the pin in the end of it, that is power. ).

If you do not have power with the jumper in place at pin #8, then you might have a broken wire in the door harness ( seems most logical, that is the only place that would get moved around a lot ).

In a 2004 + MY truck, the OTD for the driver's side window is built into the switch, it no longer uses a relay controlled by the GEM, so no relay that operate the windows themselves ( only supply of power to the switch via the accy delay circuit # 400 light blue w/ black stripe ).

Take a look for power at the relay, and at the door switch with the accy delay relay jumpered first before checking anything else.

 

The illumination in my switches flicker rapidly. Also, I can hear a very faint power type of noise when I try to roll the window down.

SSCULLY, I will try your suggestion.

edit: Here's the broken wire thread.

https://www.f150online.com/forums/el...door-wire.html

 

Thanks again everyone. It definitely was NOT a fuse problem. As suggested, its either was the relay.