No tail lights

[earthquake]

I have a 2009 Genesis Sedan 4.6. I was told by a friend today that I have no brake lights. Tail lights and turn signals operate properly, but no brake lights. I am taking vehicle to Dealer tomorrow.
Is this a known problem on the Genesis Sedan????
To me, this is a safety related issue....

 

[BacktoHyundaibychoice]

Re: Please post in the right forum. Please!

I have a 2009 Genesis Sedan 4.6. I was told by a friend today that I have no brake lights. Tail lights and turn signals operate properly, but no brake lights. I am taking vehicle to Dealer tomorrow.
Is this a known problem on the Genesis Sedan????
To me, this is a safety related issue....

Well of course it's a safety issue. In fact, I'd call roadside assistance for a "ride" to the dealership instead of driving there tomorrow.
And no, not a common issue at all. This is the first one I've seen since '08.

Off topic: how did you choose this thread to ask your question?

 

[Gambler]

I moved the above 2 posts from the thread titled "Please post in the right forum. Please!" About the only thing I appreciate about that is the irony. I'll be watching your posts earthquake.

 

[flyboy2]

I have a 2009 Genesis Sedan 4.6. I was told by a friend today that I have no brake lights. Tail lights and turn signals operate properly, but no brake lights. I am taking vehicle to Dealer tomorrow.
Is this a known problem on the Genesis Sedan????
To me, this is a safety related issue....

Earthquake... you scared me to death. This is a known problem and you're the first one to have the nerve to bring it up. Congratulations. I'm going to turn my car in because of you. Thanks for saving my life-- And congratulations on your first post. You done good!

 

[Sal Collaziano]

Have you had anyone do stereo work lately? Sometimes that can interfere with brake lights, oddly enough...

 

[earthquake]

I took this vehicle to Dealer on 5/24/11. They replaced a switch, which took about a hour, washed the car and I drove away. There was no charge for this repair. Vehicle is still under Manf. Warranty. I believe that there may be a TSB on this problem.

 

[BacktoHyundaibychoice]

I took this vehicle to Dealer on 5/24/11. They replaced a switch, which took about a hour, washed the car and I drove away. There was no charge for this repair. Vehicle is still under Manf. Warranty. I believe that there may be a TSB on this problem.

Only this one, but it doesn't sound like your problem:

This bulletin supercedes TSB 09-BR-002. In this bulletin, there is a TSB group change
from Brake System (BR) to Body Electrical System (BE).
DESCRIPTION:
Some Genesis (Sedan BH) vehicles may experience the stop lamps blinking on and off even
when the brakes are not applied. If the Z01 diode is suspected as the cause of the stop lamp
malfunction, the Z01 diode must be inspected according to the procedure below. If there is no
trouble with the Z01 diode after inspection, carry out other necessary repairs and DO NOT
replace the Z01 diode.

 

[mbo1142]

I also had the no brake light problem. Thank goodness for a good samaritan who followed me off the freeway to a gas station to tell me. Took to dealer and they replaced a diode. Said the factory one was to small so was replaced with a larger one? Haven't had a problem since, but was scary as I had driven over 250 miles non stop on the interstate. I have a 2010 Genesis Sedan.

 

[nando]

I was driving today with my family and a motorist pulled next to me and told me that none of my stop lights were working. The two stop light fuses checked out. I found another post : http://genesisowners.org/hyundai-genesis-problems-warranty-info/9806-stupid-stop-light-switches.html that states this is a known problem with the brake relay switches.

 

[nando]

Sitting at the Hyundai dealer waiting for my Genesis to be fixed. The mechanic just informed me that a diode will be to be replaced.

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[astampfel]

Someone rolled down their window and told me today that I had no brake lights! I checked the fuse and it was OK, so I guess I'll go in for a new diode. Ughhhhhhhh, another hour for a Hyundai failure. I'm sick of these problems. I have a 2009 4.6 Genesis with 32,000 miles.

 

[CUMan]

I have also had the "no brake lights" problem with my 2009 Genesis 3.8.

I first became aware of the problem several months ago when another motorist told my wife that the brake lights were not coming on. When she got home, I checked the lights; and they were not working. The next morning, they were okay. I took the car to the dealership and they said they couldn't really fix the problem until I brought the car in with the lights out.

Since that time, there have been several instances where the problem would reappear and then go away. At the moment, the brake lights are completely inoperative. Earlier this week, I talked with the Service Manager at a local dealership about the problem. He did some research and advised that the problem likely involved the Z01 diode which was mentioned earlier in this thread. Unfortunately, they do not have that part in stock and will have to order it. My car will be sitting in my driveway until they are able to do the repair.

My suspicion is that this problem is more common than most Genesis owners realize. How do you know if the brake lights are inoperative unless another motorist tells you? There is no warning indicator for this failure on the dash display. Every Genesis owner should do a check for this problem.

 

[somethingwicked]

Just want to chime in to say I had the same problem as well, with my 2009 4.6. I work at a tire and automotive chain and I brought my keys downstairs to get an (overdue) inspection done. They called me later in the day to tell me that I had no brake lights! I live an hour away and there is no way I'm driving home in rush hour traffic with no brake lights. I managed to drop off my car at the dealership and just picked it up this morning. Turns out it was the Diode issue that others have mentioned.

I would have had no idea that my brake lights were not working if I hadn't decided to get my inspection done that day (I know they were working a few days prior, as I saw them in a reflection as I was backing out of a spot).

 

[CUMan]

Got my car back from the dealership earlier this week. They replaced the diode mentioned in the various posts, and the brake lights are working properly.

The TSB 09-BE-023 indicates that the measured voltage on this diode should be "0.5-0.7" volts. There was a notation on the service ticket that the diode was "open." I take this to mean it was showing no voltage.

It would appear that Hyundai got a supply of bad diodes from somewhere. From these postings, it looks like both 2009-10 3.8 and 4.6 models are susceptible to this problem.

 

[waveman]

After I backed into a parking spot at work today, the driver following me stopped and told me my brake lights weren't working. I quickly found this thread and decided to call Hyundai Roadside Assistance for the first time. After a few minutes, the rep said that someone would come over to pick up my car a few hours later, since I wasn't able to leave right then.

The driver showed up about 20 minutes early with a flat bed truck. While he was loading my car, HRA called to let me know he was on the way. I went along with him to make sure the dealer knew what to do and to watch him unload the car, which he did perfectly. The car was ready a few hours later - the problem was the same one in the TSB noted above.

All in all, I was very satisfied with the service I received. Hyundai didn't balk at taking to the car to my dealer, even though there was one much closer to my work.

I sure wish there was a warning light, though. I hate to think how easily someone could have rear ended me, and I have no way of knowing how long I was driving without brake lights.

 

[scottdk]

After I backed into a parking spot at work today, the driver following me stopped and told me my brake lights weren't working. I quickly found this thread and decided to call Hyundai Roadside Assistance for the first time. After a few minutes, the rep said that someone would come over to pick up my car a few hours later, since I wasn't able to leave right then.

The driver showed up about 20 minutes early with a flat bed truck. While he was loading my car, HRA called to let me know he was on the way. I went along with him to make sure the dealer knew what to do and to watch him unload the car, which he did perfectly. The car was ready a few hours later - the problem was the same one in the TSB noted above.

All in all, I was very satisfied with the service I received. Hyundai didn't balk at taking to the car to my dealer, even though there was one much closer to my work.

I sure wish there was a warning light, though. I hate to think how easily someone could have rear ended me, and I have no way of knowing how long I was driving without brake lights.

This is very interesting...regarding that the car doesn't give a notification of malfuntioning tail light. I had a winter beater long ago which was a 1990 Subaru Legacy that had a dash light indicator that would tell you if a rear lamp was out. This was according to the owners manual, as I never actually had a bulb out in the car. I guess I'm surprised with all the technology on the Genesis that Hyundai doesn't outfit the car with this old technology.

 

[Mark_888]

This is very interesting...regarding that the car doesn't give a notification of malfuntioning tail light. I had a winter beater long ago which was a 1990 Subaru Legacy that had a dash light indicator that would tell you if a rear lamp was out. This was according to the owners manual, as I never actually had a bulb out in the car. I guess I'm surprised with all the technology on the Genesis that Hyundai doesn't outfit the car with this old technology.

My 1998 Toyota Camry provided a warning message on the dash anytime a bulb burned out, which happened to me once.

The Genesis lighting warning system may be a little tricky since they are apparently dealing with a voltage drop instead of completely open circuit.

 

[scottdk]

My 1998 Toyota Camry provided a warning message on the dash anytime a bulb burned out, which happened to me once.

The Genesis lighting warning system may be a little tricky since they are apparently dealing with a voltage drop instead of completely open circuit.

Funny you mention this Mark. My parents have a 1999 Camery i4 and they have never put a penny into this car except I replaced the windshield washer pump a month ago. They bought it brand new and now have 160,000 miles on it and it still runs great. Aaaahhhh the good ol' days of Toyota.

 

[CUMan]

For the second time, my tail lights quit working last week. (The previous episode was in June, 2011.) Took the car to the dealership yesterday, and they replaced the diode that was the cause of the previous failure. Working fine now.

I talked with the service man who replaced the diode, and he said they are still using the same diode that is causing all the problems. I asked him why they either don't change diode suppliers or make some other change to try to solve the problem. He just shook his head.

The diode's cost is in the $6.00-$8.00 range. The Hyundai part number is 91789-33000. I plan to buy one of these and keep it in the car with me. (Unfortunately, the dealership only had one in stock, and they used it on my car.) The diode is easily accessible and could be changed out in probably five minutes. The diode's location is shown in TSB 09-BE-023. It slips into a small connector which is attached to two wires sticking out of a wiring harness underneath the dash on the driver's side.

My wife's 94 Lexus ES has a display on the dash panel which illuminates when a tail light is out. I cannot understand why Hyundai chose not to include such a feature on a car produced 15 years later.

I feel that this is a safety issue and should be addressed with a recall.

 

[mcginnpm]

I just had this happen to me after 3.5 years and 45,500 miles (another driver pulled up alongside me, beeped her horn to get my attention, and informed that she'd nearly rear ended me because my brake lights weren't working).

When I got to work I checked this website and after reading this (and a few other "brake light" posts on this site), I called my Hyundai parts guy to see if he had the part (which he did) and I had a co-worker take me to buy a new diode ($6.89 + tax)...plus an extra, which I promptly installed when we got back to the office (5 minute procedure...the TSB is posted here).

While this is warranty item that would have been replaced for free, I really didn't care to waste the time of scheduling a service call, driving my unsafe car to the dealer to drop it off, writing up a trouble ticket, getting a loaner (if they had one), waiting for them to validate that the diode was in fact bad and replace it, and then go to pick-up my Genny.