Check the bulbs, if they are okay it is prob the brake light switch located under the dash so the brake pedal arm contacts it
Check the fuses and if they are good then check the brake light switch.
It can be connection wires, bulbs or fuses.
have you checked your fuses?
Check the bulbs - they are doubloe filamented with the smaller being for brake/turn signals Check the fuses
A blown bulb. Check fuses and then start replacing the bulbs one by one.
The probable cause of the brake lights not working on your Renault is the brake light switch. The brake light switch can be found under the dashboard by the foot pedal.
The most likely cause is a defective brake light switch; It is located towards the top of the brake pedal.
Probably the wrong bulbs or the brake lights are getting stuck "on". Or maybe a combination of the two. Check that you have the right bulbs and check to make sure something isn't keeping the brake lights on. FriPilot
Next step would be to check the fuses
ya its called go to a mechanic you idiot
Check the brake light switch first. It is usually near the brake pedal under the dash. A bad turn signal switch can also cause this if the brake lights are also turn signal lights. If the brake lights are independent of the turn signals then disregard the switch problem. A good wiring diagram will help to diagnose the problem also. Check with dealership mechanics as they have access to diagrams.
If the brake lights & horn are on the same fused circuit the most likely cause of the problem is an open circuit before the fuse.