SPONSORED LINKS

Turn signal problem

Tiny
DMHENT
  • MEMBER
  • 2013 FORD F-150
  • 5.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 141,000 MILES
I put a new multi-function switch in because my wipers quit working properly. Now everything works properly except the turn signal. It works in lane change mode, flashes three times, but then stops. If I hold the handle it works, just not on its own. I thought it might be a bad switch so I got another one and same thing happens. Any suggestions?
SPONSORED LINKS
Thursday, June 6th, 2019 AT 2:11 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The signals are controlled by the Body Control Module.

The serial data line is what controls it. You command the lights to come on and a signal is sent to the module which activates the lights according to your command.

I attached a diagram for you to view.

You will need an advanced scan tool to monitor the BCM outputs.

Roy
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, June 6th, 2019 AT 2:43 PM
Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
Have the part number verified with your VIN number at a Ford dealership. There are more than one type and aftermarket manufacturers sometimes get it wrong or make a “one fits all” part.
Was this
answer
helpful?
Yes
No
Monday, June 24th, 2019 AT 7:23 PM

Please login or register to post a reply.

Related Turn Signal Switch Content

Turn Signal Switch Replacement
GUIDE
Turn Signal Switch Replacement
A turn signal switch is designed to activate the directional signals either right or left by the driver when desired.
VIEW MORE

Sponsored links