Multi Function Switch-MFS-1999-2005

[xeroinfinity]

This covers replacement and cleaning/regreasing the switch.

Tools needed;
- T-10 Torx Screwdriver
- T-20 Torx Screwdriver
- Electronic Contact Cleaner
- Cotton Swabs
- Di-Electric Grease
- maybe some Tape

The multi-function switch is a component of the steering column, and includes both the Signal/Headlights arm, and the Wiper arm.

Removing the Multi function Switch
1. Remove the three screws from the bottom of the steering column's plastic casing with a Torx T-20 Screwdriver.
2. Remove the top half of the plastic steering column cover by lifting it from the bottom half, unsnapping it gently.
3. Carefully unplug the three wire harnesses by lifting their plastic retaining clips, and pulling them out.
4. With a Torx T-20 Screwdriver, remove the screw from the top center of the exposed multi-function switch.
5. Gently lift the multi-function switch clear from the steering column and bring it to your workbench.

Opening the MFS
1. Wrap the wiper arm side of the multi-function switch with a few layers of tape to prevent the whole unit from opening up and losing springs when we remove the screws.
2. Remove all of the screws on the back of the multi-function switch with a Torx T-10 screwdriver

Cleaning the Switch
1. Gently pry open the multi-function switch about half on inch at the center of the signal arm side to access the dirty signal switch.
2. Wipe off the dirty contacts inside with a few cotton swabs.
3. Put a coating of fresh di-electric grease on a cotton swab and apply the grease to both switch contacts.
4. Reclose the multi-function switch with all of the screws and remove the tape.
5. Regrease the spring loaded horn pin on the front if you accidentally removed the original coating.

Reinstalling
1. Reinstall the multi-function switch, be very careful to DEPRESS the spring loaded horn pin, or your horn will not work when you are finished.
2. Reconnect the electrical harnesses to the multi-function switch.
3. Replace the screw at the top of the multi-function switch.
4. Re-cover the steering column with the top plastic cover, and reinstall the three screws from the bottom.

I will post some pics and an actual test procedure for this in due time.