Introduction
Turn signals and intermittent wiper controls are the most common failures on the multifunction switch in late-model cars. Save money by doing the repair yourself—it's not as complicated as it looks.Remove the Multifunction Switch
Once known as a turn signal or blinker switch, this lever now also controls headlights, high beams, emergency flashers, wipers and washers. No wonder it’s called the multifunction switch (MFS) these days. Unfortunately, the MFS has a fairly high failure rate.
The two most common failures are:
To fix these two problems, you’ll need a shop manual, a digital multimeter and possibly some Torx bits.
Locating Your Vehicles Multifunction Switch
On most late-model vehicles, the MFS is located under the plastic covers behind the steering wheel. In that case, you can do this repair in about an hour and save the cost of an hour or two of shop time by doing it yourself. But some older vehicles require the removal of the airbag and steering wheel, and that’s a job for a pro. Refer to a shop manual to see where your MFS is located (you can find shop manuals with an online search).
Car maintenance seems daunting at first, but start small and work up the car repair ladder. Here are 100 car repair tasks and maintenance you can do yourself.
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