This guide has been written to help you repair the random signal switch sounds that occur when the multi-function switch contacts are dirty. This signal clicking just occurs randomly and is not related in any way to the flasher relay switch recall. If you are experiencing random signal clicking and want to fix it, this thread is for you.
Tools Required: - T-10 Torx Screwdriver
- T-20 Torx Screwdriver
- Electronic Contact Cleaner
- Cotton Swabs
- Di-Electric Grease
- Tape
This repair will require you to remove the multi-function switch and place it on your desk or workbench to finish the repair. The multi-function switch is a component of the steering column, and includes both the Signal/Headlights arm, and the Wiper arm.
Step One - Exposing the Multi-function Switch
- Remove the three screws from the bottom of the steering column's plastic casing with a Torx T-20 Screwdriver.
- Remove the top half of the plastic steering column cover by gently lifting it from the bottom half, unsnapping it gently.
Step Two - Removing the Multi-function Switch
- Carefully unplug each of the three wire harnesses by gently lifting their plastic retaining clips, and pulling out.
- With a Torx T-20 Screwdriver, remove the screw from the top center of the exposed multi-function switch.
- Gently lift the multi-function switch clear from the steering column and bring it inside to your desk or workbench.
Step Three - Opening the Switch
- Wrap the wiper arm side of the multi-function switch with a few layers of scotch tape to prevent the whole unit from opening up and losing springs when we remove the screws.
- Remove all of the screws on the back of the multi-function switch with a Torx T-10 screwdriver.
Step Four - Cleaning the Switch
- 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.
- Simply wipe off the dirty contacts inside with a few cotton swabs. I ended up with four very dirty cotton swabs. (Edit - To determine which contacts are for the signal switch, simply move the arm up or down as you would when driving and note the location of the contacts as they move)
- Put a coating of fresh di-electric grease on a cotton swab and gently apply the grease to both switch contacts.
- Reclose the multi-function switch with all of the screws and remove the tape. Regrease the spring loaded horn pin on the front if you accidentally removed the original coating.
Step Five - Re-installing the Multi-function Switch
- Reinstall the multi-function switch, but be very careful to DEPRESS the spring loaded horn pin, or your horn will not work when you are finished.
- Reconnect the electrical harnesses to the multi-function switch.
- Replace the screw at the top of the multi-function switch.
- Re-cover the steering column with the top plastic cover, and reinstall the three screws from the bottom.