Realized last night that when I turn on the emergency flashers the front ones work, but the rears do not. Tail lights, brake lights and turn signals all work fine.

Any ideas where to look?

 

What year truck do you have? I guess whatever year you have, the first thing I would try is moving the emergency switch back and forth rapidly and see if they start working.

 

Sorry. It's a 1999 F-250 XLT SD.

 

You have a later model truck with the famous multi-function switch that seems to go bad all the time. This is the large switch in the column that has the turnsignals, wipers, hi-lo beam and the emergency flashers. If you can't revive it by vigorously moving the emergency lever back and forth, you may need a new switch.

 

I'm assuming that thanks to the air bag, replacing it myself is not an option. Or, are there instructions somewhere of how to accomplish this task?

 

You do not have to remove the steering wheel on your model truck. Here's the procedure from the 99 cd

Multifunction Switch


Removal

1. Disconnect the battery ground cable (14301).

2. Remove the ignition switch lock cylinder (11582).

1 Insert the ignition key into the ignition switch lock cylinder and turn to the RUN position.

2 Insert a punch through the hole in the lower steering column shroud and push the ignition switch lock cylinder release tab while pulling out the ignition switch lock cylinder.

3. Twist the tilt wheel handle and shank (3F609) and remove.

4. Note:
Move gear selector to lowest position to access steering column opening cover.

Release the four clips and remove the steering column opening cover.

5. Remove the upper and lower steering column shrouds.

1 Remove the three screws.

2 Remove the lower steering column shroud.

3 Remove the upper steering column shroud.

6. Remove the multi function switch.

1 Remove the two screws.

2 Disconnect the electrical connectors.

3 Remove the multi function switch.


Installation

1. Note:
When the battery (10655) is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy.

To install, reverse the removal procedure.

 

Thank you!

Looks like I need one of those CDs!

 

Just went out to the truck to begin the task of R&R-ing the switch. Lo and behold, now all 4 corners work.

Oh well, instructions filed for later use.