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Hyundai Tiburon Electrical and Lighting Problems

14 messages,  Last post on Nov 11, 2008 at 4:22 PM

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What is this discussion about? Hyundai Tiburon, Hyundai, Lights, Electrical, Hatchback

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#1 of 14 Body Computer Failuare @ 120000K by defiant_1950 Oct 26, 2007 (7:20 am)
I have a 2003 Tib with under 120000K on it an have just been told the main computer has an electrical short and needs to be replaced. It is causing the left side hazard lights to remain lit after the car is turned off. Has anyone heard of this before and does Hyundai have any secret or hidden warranties for such. This seems awfully early in the cars life for a computer failure doesnt it. Regular checks at dealer, well maintained???? Replies to this message: joe97 (Oct 26, 2007 12:59 pm) pheonix3 (Feb 12, 2008 7:57 pm) ali74 (Mar 08, 2008 2:09 pm) pheonix3 (Mar 08, 2008 5:05 pm) a000snake (Sep 20, 2008 10:52 am)
#2 of 14 Re: Body Computer Failuare @ 120000K [defiant_1950] by joe97 Oct 26, 2007 (12:59 pm)
Replying to: defiant_1950 (Oct 26, 2007 7:20 am) I am not certain about the extent of the issue other than what you described but 120,000K is so late in the car's life   Of course, I think you meant 120,000 (or 120K). Still, it is not early in a car's life. The model year (2003) may be recent but 120,000 is not.   It does sound like a legit issue and probably does need replacement. However, if you are uncertain, as your post reflects, I'd seek a second opinion from a local mechanic or something.
#3 of 14 Re: Body Computer Failuare @ 120000K [defiant_1950] by pheonix3 Feb 12, 2008 (7:57 pm)
Replying to: defiant_1950 (Oct 26, 2007 7:20 am) I realize I'm a couple of months late, but If you havn't spanet the money on a new computer yet yours can be fixed pretty easly. It a relay in the BCM thats bad. The relay runs about $4.00. I just did one for one of my customers in November. I have the paperwork here somewere. If you still need it repost and let me know. It takes 2 or 3 days to order the relay and about 2.5 hours to install it. Replies to this message: ali74 (Mar 08, 2008 2:09 pm) pheonix3 (Mar 08, 2008 5:05 pm) a000snake (Sep 20, 2008 10:52 am)
#4 of 14 turnsignals stays on by mcilwain Feb 28, 2008 (6:08 pm)
we have to unhook the battery after shuting off the engine on our 2003 tiburon in order for the turnsignal to go off - it istay on steady not blimking- i saw where it could possible be a relay in the bcm - where can i get that relay??? Replies to this message: pheonix3 (Feb 28, 2008 8:03 pm)
#5 of 14 Re: turnsignals stays on [mcilwain] by pheonix3 Feb 28, 2008 (8:03 pm)
Replying to: mcilwain (Feb 28, 2008 6:08 pm) Here is a direct link to the MOUSER.COM product page,   http://www.mouser.com/Search/Refine.aspx?Ntt=*NEC*+*EP23N1ST*&N=1323038&Ntx=mode- %2bmatchall&Ns=P_SField&OriginalKeyword=NEC+EP2-3N1ST&Ntk=Mouser_Wildcards   Her is a link to rapidshare.com free file server, this is a pdf file of the entire repair with pictures.   http://rapidshare.com/files/95798381/turn_signal.pdf.html   if you have any questions feel free to ask.
#6 of 14 Re: Body Computer Failuare @ 120000K [pheonix3] by ali74 Mar 08, 2008 (2:09 pm)
Replying to: pheonix3 (Feb 12, 2008 7:57 pm) I'm having the same problem with my 2003 Tiburon. All the searching I've done online suggests that the whole BCM needs to be replaced, costing around $900. Your post has given me hope! In your opinion, is this a repair that most auto mechanics could successfully do or is it really complicated? Replies to this message: pheonix3 (Mar 08, 2008 5:05 pm)
#7 of 14 Re: Body Computer Failuare @ 120000K [ali74] by pheonix3 Mar 08, 2008 (5:05 pm)
Replying to: ali74 (Mar 08, 2008 2:09 pm) It is not a hard repair at all. As to whether a mechanic can do it, it depends. All that is required is someone who is proficient with a soldering iron. Too much heat on the BCM's circuit board will ruin your whole day. Getting the BCM out is easy, if you or your mechanic don't feel secure enough to unsolder the relay and resolder the new one, you can run the BCM to any TV or radio repair shop who would be able to do it while you wait. It takes less than 10 minutes to replace the relay its self. This is really a simple procedure so don't feel apprehensive. By the way this type of procedure can be done for most cars. I started out in 2000 with the fords, they too thought it was a good idea to put the blinker control in the BCM. Good luck and if you need anything further please feel free to post a message.
#9 of 14 Im having the same problem by 03tibby Mar 17, 2008 (10:14 am)
My car started doing this this morning, with no problems before now with lights. So is it for sure the relay, and if you take it to the dealer to fix it, how much does it cost, or can I take it to my local mechanic? I have spoke to my hyundai dealer and told them that this seems to be a common problem with these cars, and wanted to know if I could get it covered under my warranty even though it just expired. Hopefully they will be nice and cover it for me if this is the problem. Is there any way to just bypass this and not mess with it?
#10 of 14 BCM replacement by mpbris Aug 05, 2008 (12:16 pm)
Yup, had the same problem, plus a million others. I am definetely not impressed with the 2003's. My son had one as well and ended up with pretty much the identical problem.   Can anyone tell me how to replace a bulb for the break lights? Replies to this message: a000snake (Sep 20, 2008 10:08 am)

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