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Turn signal is only working on one side - 2003 Ford F250 Super Duty Crew Cab

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Brake light trouble right side brake light will not come on but both flashers work also turn signals work older ford truck what could the problem


I have to think the problem is inside the turn signal switch, a poor internal connection. You know the brake signal first goes through the turn switch before it goes to the bulbs. That is why the brake lights and rear turn signal lights share the same filament in the bulb, and the same wire going to those lights. The only difference is the turning side light is affected by the turn signal flasher, causing blinking, while the other side- the non turning side-does not go through the flasher relay, but straight to the bulb from the turn signal switch. Change your turn signal switch and I believe you will solve the problem. Let me know, okay?

Sep 16, 2015 | Ford Cars & Trucks

1 Answer

Left bleaker and break light not working. Turn signal works bleaks faster than right side.


Has the vehicle been in an accident on the left rear side. First check the bulb to be sure it is not defective, trade it out with the side that works properly to test. If the bulb works well then My thought are you may have a shorted wire. The turn signal flasher works by heat build up within the flasher the heat is caused by the load of the bulbs, the load heats the metal spring causing it to open the circuit then as quickly as it cools down the circuit closes again lighting the bulbs.
There is also a possibility of a defect in the turn signal mechanism on the steering column. The turn signal switch on many models does three different things on many models that use the same bulb element / or bulb for brake and turn on rear of vehicle. It controls the circuit for brake light by sending power both left and right side rear when turn signal is in neutral position then when turn signal is in left turn the switch cancels brake light power to left side rear and supplies flasher power to left side while maintaining brake light supply to the right side rear, and so on opposite when the right turn is chosen on turn signal switch. The turn signal indicators on the dash normally run off the same circuit as front turn signal bulb only which is also controlled by turn signal switch. Front has turn signals but no brake light.
I think there is an additional load on the left side rear turn circuit and it could be either a wire that is shorted or the turn signal switch if the same bulb element is used for both functions.
Often times if trailer lighting is connected the flasher will also blink a little faster because of the extra load of additional bulbs.

Feb 15, 2015 | Cars & Trucks

1 Answer

2002 dodge durango left turn signal works right turn signal does not


have you checked the bulbs front and back. to see if they work, bulb check. then it sounds like you might have a bad signal flasher that only works the left side and not the right side. or if a bulb at the front or the rear gets bright but not the opposite bulb on the same side then you may just have a bad bulb or socket or power to the socket when doing the bulb check.

Mar 06, 2014 | 2002 Dodge Durango

1 Answer

Right rear turn signal does not work


check the bulb there some bulbs have two elements in them the turn signal element might be broken change the bulb

Sep 19, 2012 | Cars & Trucks

1 Answer

Turn signal bulb was working, now it isnt


its is not uncommon for the contacts in the sockets to become corroded or just expand to the point of where they do not contact the bulb,try to test the socket with a multimeter for voltage,if it has voltage then its most likely the contacts,which sometimes can be rebent,but replaceing the sockets is a better solution,and can be picked up at most stores or 4x4 shops and junk yards.

Dec 14, 2011 | 1998 Jeep Cherokee

2 Answers

Tail lights work on both sides. turn signal and


Sounds like you need to replace the drivers brake/tail light.

Dec 14, 2009 | 1998 GMC Sierra

2 Answers

2002 Hyundai elantra driver side turn signal not working outside


This simply means that the front driver side turn signal bulb has failed. Replace it.

Oct 28, 2009 | 2000 Nissan Maxima

3 Answers

1997 dodge avenger turn signal probs and location


replace the turn signal switch it self, mine did the same thing with the left turn signal, put in fuse and it will continue to flash... went to junk yard pulled one out of a 97 avenger just like mine, swapped them out and now it works fine. looked to be like some corrosion... to repace: 3 screws under columb, 2 screws on side of signal switch (black plastic side). unplug and replace

Mar 20, 2009 | 1997 Dodge Avenger

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