How do I fix my brake lights which are not lighting on my 2007 Hyundai Sonata? I have checked the fuses and bulbs and replaced the brake stop switch but the brake lights still do not work

Did you ever check to see if power is reaching the bulbs when brake pedal is depressed? Are bulbs properly grounded?

Check the following :
1. First of all check the fuse of the brake lamp circuit. use a multimeter to check the +12 volt or use a test lamp of 12 volts.
2. Check the brake lamp pressure switch which is mounted on the master cyclinder- brake pedal. check for connection fault , check for voltage on switch as it must contact when the brake is applied .
3. chek the line to the brake lamp/tail lamp assembly . Check the GROUND connection of the lamp unit, check the holders.
A voltage absence till the lamp end will confirm the area of fault.

That one light bulb needs replaced

could be the light itself,the red brake wire that comes off the rear brake lights that feeds this stop light,sometimes things get shoved against this wire and its cut,or if it splits off in the frame,it could also be broken here too

Check the connection at the brake light switch for power comming out to the barke lights,try feeding power to the brake lights manualy using a jumper wire from your fuse box or battery,unplug the wire from the switch and put power to the harness if everything is OK the brake lights will work,then you need a new switch.

you will probably have to replace the bulb

There was recall for the 2006 and 2007 Hyundai Sonata Brake Light Switch assembly. www.promanuals.net

try the brakelight switch, it is right near the pedal above the footpad

hi if look at pedal box at where brake pedal is pivoted just above is the brake lights switch with a plug two wires ? unplug then use a wire /paper clip ? and connect the two wire terminals of plug this bypasses switch and lights should come on? if so then remove/unscrew switch fro box and you may find the nylon plunger is stuck in? you can free and lube it so it will come out / in ok then b4 refitting connect the plug and check it operates on and off lights ? ie when out lights on when pushed in lights off

there is a tsb for the brake switch in 06 sonatas. it must be adjusted or replaced by dealership. is your check engine light on, if so its probably code p0504