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HALLELUJAH!!! The Fix for 2013 Taillight Issues proves to be Valid!!!

17K views 48 replies 26 participants last post by  tova86 
#1 · (Edited)



SO HAPPY SO HAPPY SO HAPPY!!! :D :eek: :D

This has been bothering me for a while now, so I'm pretty stoked. Praise God, the fix works.

Several members have postulated that replacing the stop lamp switch may remedy the issues. And then last week, BTRcc (of whom I'm very grateful) posted this:

People experiencing problems with 13' tail lights in Korea have narrowed the problem down to the brake switch.

Not sure if it is the same case here but most problems have been solved by replacing the brake switch in Korea.

So since I had a service appointment at the dealership today, I bought a new switch while I was there, installed it, and sure enough,... There be light, and it was good, haha :bigsmile:

It's a quick and easy fix, took like 2 minutes. The switch is only 5 bucks. Glad they had it in stock too. Just use a 14mm wrench and you're golden.

Here's the info: 93810-3K000 SWITCH ASSY - STOP LAMP (4P)

Purchase it from a Hyundai dealership or order it online: http://www.jimellishyundaiparts.com...-ASSEMBLY---STOP-LAMP/3462551/938103K000.html [note: Verify the part number of your current switch before ordering]








If you're not familiar with the 2013 taillight issues I speak of, look here:

http://www.gencoupe.com/exterior-2008-2012/100630-2013-tail-light-problems.html
http://www.gencoupe.com/electrical-...ts-brake-lights-not-working-off-position.html
http://www.gencoupe.com/electrical-...er-keep-your-old-taillights-if-upgrading.html


And for those of you who were on the fence about upgrading... 'Sall good now :)










EDIT:
here's my theory:

The moving component of the brake switch is a spring loaded nylon button (the white thing sticking out the end of the switch). The brake pedal keeps the button pressed in when your foot is not on the brake. The circuit, for the most part, is open when the button is pressed, meaning no power to the taillights. But once you press the brake, the pedal disengages from the nylon button and the spring pushes the button out which in turn closes the circuit, allowing current to go to the taillights. Makes sense so for right?!

Now I could be WAAAAAYYY off base here, but I think that the friction the nylon button undergoes every time the brake pedal is pressed causes fine particles of the button to be shaved off against the inner housing of the switch and vice-versa. Over time, this build up of plastic sediment hinders the button from smoothly gliding in and out of the inner housing shaft. This lack of fluid movement results in the button sticking, or not fully disengaging.

I'm thinking that perhaps this makes for a partial contact path. Meaning that the circuit is somewhat closed because there is minute contact occurring, but not enough to let through the full magnitude of the current required to power all of the LEDs in both 2013 taillights, Hence the flickering, the partial segment lighting and the sometimes single taillight ignition. This subdued current may be enough to fully power the 2010-2012 OEM taillights, but not powerful enough to light up all of the LEDs present in the 2013 tails.

A new brake switch has not undergone the frictional fatigue which results from being pressed in and out repeatedly. In other words, it glides freely. So while you may be re-introducing the same exact part, having a brake switch that fully disengages will open up the current path to its maximum potential.

Right or wrong, that's all I got, haha :D
 
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#34 ·
This is wonderful news.... Been having this issue since I installed the 13s and thought it was the LED strip I added to the headlights.. Only to find out after I removed that the problem was still the same. Just called the dealer (in Indy) and they have the switch and going to swing by today and pick it up. Fingers Crossed....
 
#39 ·
Just an FYI guys, Hyundai is releasing a new brake light switch, was just informed today when I went to pick up my new one, can't get the old ones anymore. Hopefully have my new one before the new year. I'll post back with the new part number when mine arrives.
 
#44 ·
Well then. Usually unless there is a major change in the part itself, like reach or connector type, they don't change the part # itself. At least with Hyundai.

However, Hyundai Canada has now changed the part # itself, when the USA adopts the new part number, I don't know. The new part # for M/T's is 93810 3K000QQH

 
#47 ·
I assume this is for the 2010-2012 GC upgrading to the 2013 LED brake lights?

I assume the 2013 models do not have this issue currently?, as the 2013's should have the new part number already installed

Duro
 
#48 ·
It's to fix an inherent issue with the brake switch, you can technically get it done under warranty as there is a flaw with the switch. No TSB or Safety will ever be produced for this however since it doesn't really affect pre-13's as our light bulbs are not as sensitive as LED's are to power changes.

Not 100% sure on whether 2013's have the new part already.
 
#49 ·
So i tried to get this fix and bought the new brake sensor but the taillights still doesnt show on auto mode.. Am i missing something? US spec 2010 p\n 93810 3k000.
 
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