Both Brake Lights Stopped Working

[JimmyLee]

Both brake lights stopped working. I changed the stop light fuse in the engine bay fuse box, but to no avail.

 

[consilius]

Have you performed all necessary recalls?

http://genesisowners.com/hyundai-genesis-forum/showthread.php?t=15020

SUMMARY:
Hyundai Motor America (Hyundai) is recalling certain 2009-2011 Hyundai Genesis vehicles manufactured April 30, 2008, to November 21, 2010, and 2011 Hyundai Equus vehicles manufactured July 31, 2010, to November 21, 2010. Due to a circuit failure, the stop lamps in the affected vehicles may not illuminate.

CONSEQUENCE:
A following vehicle may not recognize that the vehicle is slowing or coming to a stop if the stop lamps on the vehicle do not illuminate as expected. There is an increased risk of a rear-end crash as a result.

REMEDY:
Hyundai will notify owners, and dealers will repair the stop lamp switch circuit, free of charge. The manufacturer has not yet provided a notification schedule. Owners may contact Hyundai customer service at 1-714-865-3920. Hyundai's number for this recall is 125.

NOTES:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 

[Gunkk]

That and the diode which is notorious for failure.

3rd one down:
http://www.hyundaiproblems.com/tsbs/Genesis/2009/

 

[JimmyLee]

Well, it turned out to be the diode mentioned in the recalls. Hyundai installed the "old" design, stating that an improved diode is still in the works. Seems odd that this hasn't been worked out yet.

 

[SoCalJay]

I just got my recall notice in the mail today and it says they will contact me again once a fix has been worked out. Luckily my lights still work fine but haven't they known about this for at least a month?

 

[geops]

They have known this for years.

 

[Gunkk]

It's a zener diode. Which operate in breakdown mode.... A poor mans voltage regulator. And not very reliable.