I switched my rear turn signal bulbs with LEDs. Now they flash in a fast pattern like the bulb is burned out. Any suggestions ?

 

Turn signals require a load to work properly, for a filament bulb, the load is the element for an led you will need to either figure out the resister value to add or just buy an led made for a turn signal

I use LEDs on my Honda pilot for turn signals there were designed for truckers as running lights and have the resister load built into the element

 

Care to share a link or two for those?

 

read this doc to get a better understanding of what I am talking about.

http://www.superbrightleds.com/pdfs/...istor_info.pdf

This is a simple loading resister to use any LED you choose, but if you query for LED turn signal etc, you will see various companies that sell them with the loading resister circuitry built in.

Meritline is an excellent company from my dealings, they have some like this, http://www.meritline.com/t20-smd-led...--p-50170.aspx, this is a T20 in size, but may help you get the idea.

 

I saw some others from ELEF that are stupid bright, but looks like those bulbs require you need to use quick connects on your stock wiring FTL

http://www.youtube.com/watch?v=fVG1MJk05Uc

 

I haven't looked into it yet but I want to see what the factory flasher looks like. I installed an electronic flasher in my 4Runner for my LEDs so they flash like normal. If the LS460 has a replaceable flasher and an optional electronic flasher, that is the way to go.

 

Please let me know what you find.

 

Yes, agreeing with cmasten. I experienced this -- it's called 'hyper-flashing' -- with the rear turn signals on my 2007 Lexus LS460 as well as with the rear turn signals on my prior Toyota product, an 2006 Avalon. The LEDs are not delivering sufficient load resistance to be properly detected and controlled. The LEDs require an incremental load-resistor (or flash-relay or whatever) to be installed in-line behind the LEDs to cause them to flash properly. I installed a pair of load resistors on the Avalon.

High-quality external load-resistors get very hot and have to be installed on metal in an area not conducive to fire. So, with the LS460, I decided I didn't want to be bothered with all that again … and just went with an $11 pair of blue-coated #921 Sylvania SilverStar incandescents … that supposedly deliver a much brighter/whiter light (as the expense of delivering only 175 hours of expected life).

Btw, I found that my local O'Reilly counter guy readily understood the LED hyper-flashing issue … and could have assisted in ordering-in the load-resistors I would have needed. Or you can find a pair, or even a quad, on Amazon for about $15.

 

Get yourself one of these bad boys.

 

I am using Diode Dynamics smart tap flasher and it works perfectly with any led .

 

Yea but how difficult was it to install?

I installed 7440 Amber LED's in the front turn signals and did not get any hyperflash at all and they look great. But I have tried 3 different sets of amber 921 LED's in the rear and all of the result in hyperflashing. At this point I am considering the relay because I dont want to install resistors.

 

The flash-relay sits behind the driver's instrument cluster; you have to remove certain trim panels so as to be able to unscrew the instrument cluster hold-downs, then set the instrument cluster aside and then swap-out the flash relay. DIY instructions for pulling the instrument cluster and installing a new flash relay are posted at https://bit.ly/3B04NrS , https://bit.ly/3i9wztD , https://bit.ly/3ecOpuz .