The BOO (Brake On/Off) Switch may need to be replaced. If it is bad, it would cause the brake lights to NOT illuminate when the brake pedal is applied.
Check your brake light switch at hte brake pedal.
Blown fuse, bulb, or bad brake light switch.
Check the bulbs, fuse & brake light switch on the pedal.
A bad ground wire is the most common cause of turn signals and brake lights not working. The ground wire connection might be corroded.
Check the bulbs - they are doubloe filamented with the smaller being for brake/turn signals Check the fuses
Check the switch on the brake pedal
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.
On a 1999 GEO Tracker, a bad fuse can cause the headlights and dash lights to blink. A bad voltage regulator or alternator can also cause lights to blink and flicker.
burned out bulb, blown fuse, wiring
Blown fuse, both lights are burnt out, There is a wiring or ground issue.