ABS/ESC warning lamps
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ABS/ESC warning lamps - 5/18/2008 12:11:34 PM
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kevkat2
Posts: 7
Joined: 6/10/2007
Status: offline
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FYI: The ABS/ESC warning lamps lit up on my 06 Sonata. Also, the brake lights would not come on. Took it to the dealer expecting $$$$. Turned out to be the brake switch. Fixed under warranty in about 10 minutes. Why it is tied together, who knows? But I post this in case you have a similar situation. 
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RE: ABS/ESC warning lamps - 5/18/2008 1:18:49 PM
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ken99
Posts: 667
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quote:
Why it is tied together, who knows?
Because all the components you listed (ABS, ESC, the brake light switch) as well as the Traction Control System are all integral to the brake system on the car. Iinternal diagnostics on the brake system determined the switch was malfunctioning, which tripped an error code that lit up the ABS and ESC lights on the dash.
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RE: ABS/ESC warning lamps - 5/19/2008 7:33:52 AM
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Double J
Posts: 16
Joined: 3/30/2008
Status: offline
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Question - does my 2007 Sonata have a function that alerts me when the brake pads are getting low and need to be replaced before the rotors get affected? I've heard of some cars having this, but I'm not sure if this car does.
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RE: ABS/ESC warning lamps - 5/19/2008 8:55:41 AM
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NovaResource
Posts: 874
Joined: 5/29/2005
Status: online
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Actually, yes it does. But it's not an electronic monitor that illuminates a light in the dash. Each brake pad has a small piece of metal that will come in contact with the rotor when the pads are low. The metal tab will cause a squealing sound when driving (not while braking). If you hear that squealing, it's time to check your pads.
Also, as the pads wear, less brake fluid returns to the master cylinder. So when the master cylinder is low on fluid, it's a good indication that the pads are worn. DO NOT ADD FLUID! Check the pads first and replace any worn pads. If you add fluid first and then try to replace the pads, you will have to remove fluid form the master cylinder. The braking system is designed to remain closed. The ONLY reasons to add brake fluid is if there is a leak or if you are totally replacing the fluid. There is no need to bleed the brakes when changing pads unless the system is leaking fluid or air has gotten in the system.
_____________________________
Octane Truth: Regular or Premium? (Car and Driver Magazine: November 2001)
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RE: ABS/ESC warning lamps - 5/19/2008 6:03:14 PM
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kevkat2
Posts: 7
Joined: 6/10/2007
Status: offline
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quote:
ORIGINAL: ken99
Because all the components you listed (ABS, ESC, the brake light switch) as well as the Traction Control System are all integral to the brake system on the car. Iinternal diagnostics on the brake system determined the switch was malfunctioning, which tripped an error code that lit up the ABS and ESC lights on the dash.
I agree with you that the ABS, ESC are integral to the brake system. But come on, the cheap ass brake light switch? That is what I meant. And I have to wonder how many people have paid big $$$ for repairs when all that is wrong is a cheap switch? It reminds me of the old Aerostar van I once owned. The horn stopped working. Needed to get it inspected. Can't pass inspection without a horn. Went to the Ford dealer. Bad airbag sensor. Cost several hundred to repair. How is the horn and airbag system tied together? They are not. Just a crappy way to design a car.
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