Turn SIGNALS not working?

[Sermon]

I just bought a 2001 F350, my first diesel. The only problem with the truck i have found so far is the turn signals dont work front and back. With the lights on, i can make the back blink by repededly pressing the turn signal lever up or down( for left and right). Every once in a while, when pressing the lever the front signals will blink just once. If i push the lever all the way down like normal, nothing happens. It locks in place but does not blink. Any ideas?

[djsdiesel]

Sounds like the flasher

[BadAss01F250]

I KNOW THEY WOULDNT COME ON AT ALL IF IT WAS A FUSE BUT CHECK UR FUSES ANYWAY...ALWAYS WANNA START W/ THE SIMPLEST SOLUTIONS FIRST THEN WORK YOUR WAY UP FROM THERE

[7.3FOR-ME]

My powerstroke has nearly the same problem. Except mines dont work at all unless i press on the brakes and put the turn signals on and then one of the brake lights goes out. I tried replacing the electronic flasher (Relay 1 on fuse panel) But still no luck. In your case you might just get lucky since it would only be a $9 fix.

[kcreel1]

theres a (blue square realy) under dash up by radio bout 10$ dollars to fix it its kinda a pain to get to from under the dash been there done that a few times

[Sermon]

My truck is doing the EXACT same thing as 7.3FOR-ME. If i have the brakes on, i can make the rear blink sometimes by playing with the blinker arm. I took the dash apart and replaced the "blue" box with a new electronic flasher from auto zone(nothing happened). I have not tried replacing the relay 7.3 is talking about because i'm not sure which one it is. Thanks for the help guys. Hopefully i can get to the bottom of this without to much $$$$. My next TRY will be the multifunction switch but that is a little pricy.

[7.3FOR-ME]

Just wondering do you have a 5th wheel trailer hookup plug? I tried replacing that relay that you did under the dash and nothing happened either. I had seen on other posts about people who had replaced the switch in the steering column and no luck. I think the 5th wheel triler plug might have something to do with it. Let me know if you have a plug to.thanks

[7.3FOR-ME]

Also wanted to add. If youv'e ever seen a turn signal flasher their a little metal box. Put your hazards on and listen to that clicking. The hazards have a seperate flasher.(Thats what Carquest said) so I would imagine that the turn signal flashers are in the same area. I bought one but couldn't find anything that looked like it. If you see it also let me know.thanks

[Sermon]

7.3 for-me. I do have an electronic break controller on the truck. It was there when i bought the truck and it has never worked. When i plug my trailer up, nothing happens. No trailer breaks or lights. You think this could have something to do with it??? Also the flasher relay i found was under the dash to the right of the steering colum

[bigcountrysg]

I have a brand new Multifunction switch in the box from a Ford dealer. Cost at the dealer around 100 bucks. I will sell it for 50 bucks plus shipping. I bought it because I had a blinker problem. I ended up having a short in the wiring. Once I repaired that I have had no problems.