When I press the brakes my lights do not come on

BMS61696

MEMBER
1999 HYUNDAI SONATA
6 CYL
2WD
AUTOMATIC
122,000 MILES

I have a 1999 Hyundai Sonata V6 with 122,000 miles on it. The car runs and stops great. The problem is that when I press the brakes my lights do not come on. I have changed the Brake Switch on it already. Checked for bad fuses all good. All other lights to rear end of car work as they should. Tested the wiring harness to the barke switch got one positive for constant power all other nothing. Could you give me any pointer of what it may be?

5 Replies

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Does the high mounted brake light work or is it out also? Have you checked the bulbs?

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Tuesday, March 23rd, 2010 AT 1:46 PM

BMS61696

MEMBER
3 POSTS

When I turn the headlights, the rear lights up as they should. Just nothing happens when I push on the brakes, all the bulbs are good and getting current.

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Tuesday, March 23rd, 2010 AT 5:34 PM

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Yes but your vehicle should have a third brake light (aka high mount ), is this third brake light coming on or are all 3 brake lights inoperative? Do you have cruise control? If so, does it work or no? If you're certain the brake switch and fuses are good then there must be faulty wiring, the light blue wire from switch goes to the lamp assemblies while the orange wire from switch goes to cruise control system and then on to the fuse. Check these wires to ensure they are not damaged.

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Tuesday, March 23rd, 2010 AT 7:13 PM

BMS61696

MEMBER
3 POSTS

Ok, I did some research and figured out what you were talking about regarding the "high mount". It also is not working, nor is the cruise control. I will check the wiring in the morning as I can not see them. Do you know if there is a way to bypass the faulty wiring if there is one? I don't have to have the cruise.

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Tuesday, March 23rd, 2010 AT 7:47 PM

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

You would just have to simply remove and replace the bad wiring with good wiring. Did you remove and actually test the fuse though? Sometimes they will look OK visually but still test bad with a meter. I would suggest replacing the fuse first or just swap it with a known good fuse of the same ampage.