SmartTap CF18 (LM449) Flasher Relay

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SmartTap CF18 (LM449) Flasher Relay

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The SmartTap™ is a replacement turn signal flasher module compatible with any vehicle using a CF18 (LM449) Flasher. Programming each mode is simple with the help of the included programming guide and the use of existing vehicle controls.

Tap-to-Signal: One-touch signaling is a convenient way to signal to other drivers when switching lanes. Simply tap the turn signal for a series of signal blinks.

Arrival and Departure Modes: When the lock or unlock button is pressed, the surrounding area will illuminate for better visibility when approaching or leaving the vehicle at night. The lighting time can be adjusted from 10-90 seconds for additional illumination, or disabled if desired.

Unique Hazard Functions: The SmartTap™ has built-in strobe, slo-mo and wig-wag hazard functions to help the vehicle stand out when the hazards are on. Apply these functions on their own, together or with the strobe setting for a total of EIGHT unique hazard functions!

This product was designed and fully manufactured by Diode Dynamics, in St. Louis, Missouri. It is fully made in USA.

The module should be compatible with the following vehicles. Contact us if you are not sure, or need assistance!

  • 2011-2014 Lexus CT
  • 2002-2012 Lexus ES
  • 1998-2005 Lexus GS
  • 2003-2016 Lexus GX
  • 2010-2012 Lexus HS
  • 2010-2013 Lexus IS Convertible
  • 2008-2013 Lexus IS F
  • 2001-2010 Lexus IS Sedan
  • 2002-2005 Lexus IS Sportcross
  • 2007-2012 Lexus LS
  • 2004-2012 Lexus LX
  • 1999-2013 Lexus RX
  • 2013-2016 Scion FR-S
  • 2005-2013 Scion tC
  • 2004-2007 Scion xA
  • 2004-2010 Scion xB
  • 2008-2012 Scion xD
  • 2003-2010 Pontiac Vibe
  • 2013-2016 Subaru BRZ
  • 2009-2016 Subaru Forester
  • 2008-2016 Subaru Impreza
  • 2004-2009 Subaru Legacy
  • 2005-2007 Subaru Legacy Wagon
  • 2005-2015 Subaru Outback
  • 2005-2007 Subaru Outback Sedan
  • 2008-2014 Subaru Tribeca
  • 2008-2017 Subaru WRX/STi
  • 2013-2017 Subaru XV Crosstrek
  • 2017 Toyota 86
  • 2003-2009 Toyota 4Runner (non-DTRL)
  • 2005-2010 Toyota Avalon
  • 2002-2011 Toyota Camry 
  • 2003-2010 Toyota Corolla
  • 2007-2012 Toyota FJ Cruiser
  • 2001-2013 Toyota Highlander
  • 2001-2016 Toyota Land Cruiser
  • 2003-2013 Toyota Matrix
  • 2001-2015 Toyota Prius
  • 2001-2012 Toyota RAV4
  • 2001-2016 Toyota Sequoia
  • 2004-2010 Toyota Sienna
  • 2004-2009 Toyota Solara
  • 2005-2015 Toyota Tacoma (non-DTRL)
  • 2000-2006 Toyota Tundra
  • 2009-2016 Toyota Venza
  • 2007-2011 Toyota Yaris
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Application LED Flashers
  1. Nice functions for Forester XT 2016 Review by Izt

    Fast overseas delivery within 1 week, and it was easy to install in my Forester XT 2016!

    Need some time to program the hazard lights options, and though the pricing is on the high side, the SmartTap functions are great! (Posted on 3/20/17)

  2. Nice Gadget FJ Cruiser in Namibia, Africa Review by Tate

    finally received my flasher.
    Installation was much easier than i feared. I was ready to remove the fuse-box but just unhooked the cable on the stock flasher.
    I wished i had also order the LED bulbs for a even better effect. (Posted on 3/15/17)

  3. 2017 BRZ Review by Dave

    Works great on my 2017 BRZ. Very easy to install. Really is plug and play (Posted on 3/14/17)

  4. Very well pleased Review by Patrick

    It's amazing for me being a volunteer with the strobe patterns it was a quick and simply install took only 10 minutes!!! Super stoked!!! (Posted on 3/11/17)

  5. Good product Review by JD

    Good Product good great functioning awesome (Posted on 3/11/17)

  6. Very nice product Review by Jay

    I love this product. I like the tap to signal. I was always looking for that the other thing Hay I love is the approach/departure lights. The wip way. Also make me stand out from the crowd. Love this product so far.

    Another super cool thing is the 3 years warranty. This put me at ease to let me know I won't have to worry about anything if my relay stop working for some reason. (Posted on 3/11/17)

  7. Great Product Review by Daniel

    Simple plug and play mod, couldn't be easier. I like the added functions it gives to the turn signals and hazards. Only things to note would be if tap to indicate, and then change your mind, or something is preventing you from turning/changing lanes, your blinker will still blink for the number of times you have it set. Not a huge deal, just something to be aware of.

    Also for my 2007 FJ Cruiser (non TRD) the arrival function which keeps the lights on for a set amount of time when you unlock the vehicle, does not work. The departure function does, so if you want to illuminate as you walk towards your vehicle, you simple hit the lock button and the lights stay on. Again, not a huge deal, but also something to keep in mind.

    As for the review that says the hazards take a second to start flashing, that is true, but the hazards illuminate as soon as you turn them on, then stay illuminated for a brief moment, then start flashing. This was the same with a different relay I had before the smart tap. All in all I like this product and wouldn't hesitate to recommend it! (Posted on 3/8/17)

  8. Nice Product ! If Only... Review by Grisson

    Great hazard light features ! Very cool to have the wig-wag hazard ! But if only the turn signal flashing speed can be slightly is about 50% slower than my stock's flashing speed...

    Otherwise, the product is cool ! (Posted on 2/22/17)

  9. Perfect compatibility with TOYOTA Prius in France Review by Nicolas

    I am happy to have installed it on my TOYOTA PRIUS of 2007 in France. All functions are activated to perfection and the installation is very easy. Moreover the sending to France was very fast. Everything is perfect (Posted on 2/18/17)

  10. Did the job. Wig-wag is cool. Review by Joey

    I have this installed on my 2015 WRX. Prior to this relay I had one that had a long delay on the first flash. It was a small thing, but bothered me every day. I was excited when DD announced this and despite being 4-5x what other, more basic, relays do, I gave it a shot. The long initial flash is gone which is great. What a relief. But, the blinkers otherwise now are pretty slow. The tap-to-signal function is great, but needs a way to quickly cancel it as well-- maybe another tap in the same direction or one in the other would be great. Overall satisfied, but would like something with a bit more flexibility for the price. (Posted on 2/14/17)

  11. Works great Review by TimFlan

    Easy install on my 2015 Subaru Forerster. My other vehicles have the bump-to-signal feature but the Forester didn't have it. I missed that feature but now I have it, plus the other stuff. Easily programmed. I removed the front left lower dash panel to get at it since it's buried up in the dash, but that was simple. Looks exactly like OEM so clipped right in. A bit pricey but I like it. (Posted on 2/14/17)

  12. Cool Product Review by Alexander

    This relay is an easy install with multiple uses. The quality of it seems great so far with zero issues. Customizing your options is also simple with the supplied instructions. (Posted on 2/8/17)

  13. Pleased with SmartTap flasher relay Review by Dean

    The staff at Diode Dynamics are great. While the first relay failed the staff quickly got a replacement shipped out. This unit works great. Product was easy to install in my 2017 Subaru WRX. Features are easy to learn as the unit is plug and play. Impressed with the quality and pride the company shows in the product and their customers. Have already ordered another quality Made in the USA product from Diode Dynamics. (Posted on 2/7/17)

  14. Should have come this way from the Factory Review by PureWRX

    With cars today LED's aren't anything new but for the 2015 Subaru WRX there is still room for improvement. Tap to turn has come standard on the major car companies for sometime and thanks to Diode Dynamics innovation they allowed me to bring my car up to that level. Install is quick and simple plug-n-play. Packaging and instructions were top notch. Added features like the Strobe Hazard give you an added flare and is something I really enjoyed. Pair this product with the Tail as Turn harness to really set off the rear end of your WRX. (Posted on 2/7/17)

  15. Amazing but may need some tweeks Review by AgentHysteria

    I am in love with this Relay! I love the fact that it makes my car pop out from the crowd when I activate my hazards. The only complaint I have is that when I turn on the hazards it has to take a second to start flashing. (Posted on 2/7/17)

For complete programming guide please click here

Worry-free warranty

  • -Full 3-year warranty on all products
  • -No waiting: we usually send new items out with a return label (US customers only)


You will get quick help from our trained staff for any issues.

All Stage Series products carry a limited 8-year warranty.

For further details, please see our full article.

Domestic (US) Customers

  • - Just $5 per order with our Diode Delivers program
  • - Same-day shipping for all orders placed by 12:00 PM CST (or until 4 PM with rush processing)
  • - USPS, for delivery in 2-4 days (on average)
  • - Express services are available, see exact pricing at checkout
  • - Fully Insured


International Customers

  • - We ship to all countries via standard mail
  • - Usually around $10 for LEDs, or $25 for HIDs.
  • - Choose your service on checkout to see exact prices:
  • - USPS 1st Class: 2-5 weeks
  • - USPS Priority: 1-2 weeks
  • - Express EMS: 1 week
  • - Please email us if you are unsure about shipping to your country.

You will receive updates from our site when your order is shipped, along with a unique shipment number to ensure that your order is correctly accounted for. This allows you to easily reply to us if you have any concerns.

Whether your order is big or small, it is tested through many run cycles, and each bulb is tested before shipment. Every single bulb. Every time. And if anything does go wrong, you can rely on our industry-leading warranty for worry-free replacement.

If you're not happy with your items, we want to make it right. So we have some pretty awesome return policies:


30 day return policy. All customers have 30 days from the date of original order shipment to return items.

Full refund, no fees. At Diode Dynamics, we offer free returns. That means no restocking fees, no administrative fees, and no hassle!

 Free return label. If your original order was over $50, you get a free return label for your items (US customers only). If your order was less than $50 or international, you can send the items back through your preferred method.


Within 30 days: If your original order was over $50, you can get new items shipped to you with a return label (US customers only). If your order was less than $50 or international, we can send you the new items first, but you are responsible for returning the old items.

Within 90 days: Any item can be returned for exchange or store credit within 90 days. The buyer is responsible for the cost of the return shipping, and must first return the old items. We'll still cover the postage for the new items.


Please note: due to the nature of custom acrylic pieces, we cannot offer any refund or exchange for returned custom acrylic items.


To make a return or exchange, please request an RMA, or give us a call. When we get it back, you will be notified and credited appropriately.

Again, all returns must be approved, with an RMA. This is so that we can process your return as quickly as possible when we get it. If you would like to return an item, please Request an RMA. Please include as much information as possible about the reason for return.

Alternatively, you can also send us a message, or give us a call!