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Hyundai Tucson ESC Warning Light and Electrical Problems

20 messages,  Last post on Oct 06, 2008 at 3:18 AM

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#12 of 20 Re: ESC/Electrical Issues [dawners] by tenpin288 Jan 28, 2008 (6:05 pm)
Replying to: dawners (Jan 28, 2008 5:14 pm) If you go to http://www.hyundaitechinfo.com and sign up there, you can access a lot of the same info your dealership has access to. Once you signup and login, look up TSB # 07-90-007 BATTERY DISCHARGE CONDITION ON MODELS WITH M280 AUDIO SYSTEM. This directly addresses the battery drain problem due to a bad radio. The prescribed replacement is a remanufactured unit that has been altered to eliminate the problem. Replies to this message: dawners (Jan 28, 2008 8:29 pm)
#13 of 20 Re: ESC/Electrical Issues [tenpin288] by dawners Jan 28, 2008 (8:29 pm)
Replying to: tenpin288 (Jan 28, 2008 6:05 pm) Thank you for the information--I'll sleep a little easier. I read on another post that someone still had problems with the remanufactured radio--that the problem wasn't corrected. However, that post was from a six months ago.
#14 of 20 Re: ESC/Electrical Issues [cruz_v] by kathystucson Jan 29, 2008 (6:24 pm)
Replying to: cruz_v (Jan 27, 2008 12:26 pm) No, my prob not solved- every time it happens I'm on the road, and then the light goes out the next time I start up the car. So I know if I take it to the dealer, they won't believe me. My neighbor ran some test for me and he says my car won't pass emission inspection & that Hyundai HAS to fix that under warranty if under 50k miles.  Pretty bizarre...
#15 of 20 Re: ESC/Electrical Issues [cruz_v] by cruz_v Jan 31, 2008 (6:55 pm)
Replying to: cruz_v (Jan 27, 2008 12:26 pm) Autos del Caribe Hyundai dealer changed the "break ligt sensor" and esc on/off switch. At this moment the light of "ESC/OFF" not turn on automatically. I hope this solve the problem.....
#16 of 20 Re: Warning lights-06 Tucson Limited [sewti] by jeff08 Jul 03, 2008 (12:20 pm)
Replying to: sewti (Sep 19, 2007 9:27 am) My wife and I have a 2007 Hyundai Tucson SE 4WD. At 13,000 miles, the ABS, BRAKE, ESC OFF, and the 4WD lights would all come on in the mornings at the same time. They would then mysteriously come off after about an hour of driving. After 6 trips to a stumped Hyundai dealer, I finally was fed up, got a loaner car, and let them keep it until it was fixed. The problem? After they replaced the brake switch (???) they investigated more and found a faulty ABS module. It was almost a $2000 fix (Hyundai paid) and so far 3,000 miles and no problems.
#17 of 20 2006 Hyundai Tucson ECS light problem by robare Aug 18, 2008 (10:56 am)
I recently bought a 2006 Tucson and after experiencing the "ECS" light problem I read with great interest the comments posted here. I have a shop manual for the 2006 Tucson and it clearly shows that the brake switch is a dual switch. One set of contacts for the brake lights and one set of contacts for the "ECS" circuitry. The "ECS" contacts are closed until the brake pedal is pushed. Then, the brake light contacts close and the ECS contacts open. The reverse happens when you let your foot off the pedal. I suspect that the ECS contacts sometimes aren't closing when the brake pedal is let up. The switch is easily removed and it's an easy dissassemble to inspect and clean the contacts. I found the heavy duty brake light contacts somewhat pitted. I cleaned and adjusted the contacts and put the switch back in the car. Let's see what happens. I'll post future results. Replies to this message: robare (Aug 20, 2008 10:55 am) robare (Aug 28, 2008 9:27 am) dj2cohen (Oct 06, 2008 3:18 am)
#18 of 20 Re: 2006 Hyundai Tucson ESC light problem [robare] by robare Aug 20, 2008 (10:55 am)
Replying to: robare (Aug 18, 2008 10:56 am) It's been 3 days since I cleaned and adjusted the brake switch on my 2006 Tucson (19,255 miles) So far, the "ESC OFF" light has NOT come on. Previously, the ESC OFF light would come on and stay on even if it was a short or long trip. The only way to shut the light off was to stop and turn off the ignition. DUH IT's Electronic Stability Control = ESC Replies to this message: robare (Aug 28, 2008 9:27 am) dj2cohen (Oct 06, 2008 3:18 am)
#19 of 20 Re: 2006 Hyundai Tucson ESC light problem [robare] by robare Aug 28, 2008 (9:27 am)
Replying to: robare (Aug 20, 2008 10:55 am) OK Now it's been two weeks since I serviced the switch and the E S C light is behaving normally. Now at 20,180 miles. Definitely.....The brake switch. Replies to this message: dj2cohen (Oct 06, 2008 3:18 am)
#20 of 20 Re: 2006 Hyundai Tucson ESC light problem [robare] by dj2cohen Oct 06, 2008 (3:18 am)
Replying to: robare (Aug 28, 2008 9:27 am) I just had my Tucson into the dealer on Friday 10/3 with the ESC light issue as well. They replaced the brake light switch and said that it is a common complaint.

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