Toyota Corolla 2009 Wig Wag (Whelen UHF2150A)

10

Asked by Jan 15, 2017 at 02:28 PM about the 2009 Toyota Corolla Base

Question type: Car Customization

I contacted Whelen to buy a UHF2150A, which is a wig wag for the
headlights, but they told me it wouldn't work on my Corolla 2009.
The reason was that the lights were controlled by the computer and if you
inserted this UHF2150A, it would give all kinds of error codes and just
explode, at least, that's the impression he gave.
Is this at all correct and if so, why? Are there alternatives?

4 Answers

81,325

I wouldn't doubt that the headlights are controlled by the computer. Talk to your local Toyota Dealer. They might work but the computer will have to be flashed (programmed) for them. Especially if this is not an emergency vehicle. HTH. -Jim

10

This is what I don't understand;) What has to be programmed? Can't I just hook into the cabling, as shown in the image:

1 people found this helpful.
81,325

It would most likely be the body control module (BCM) that would need to be programmed to recognize the Wig Wag hook up. When you switch on the headlights this sends a headlight request signal to the BCM. The BCM then turns on the headlights. HTH. -Jim

10

Right, but the BCM just puts voltage on the wire that goes to the lamp and do we really have to care bout that? As you see in the diagram, the UHF2150A module just inserts itself on the wire right before the lamp, so as long as the high beams are on and the UHF2150A is on, the high beams will flash.

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