Late models of the car
Examination
If the brake light does not come on, first check the fuse. Then check the bulbs. If the bulbs are OK, then you need to check the switch.
Remove the footwell trim (above the pedals).
Disconnect the plug from the brake light switch by pressing the mounting tabs.
Turn on the ignition. Short the contacts in the plug for the brake light switch with a piece of wire. If the brake light does not light, replace the brake light switch.
Removal
Remove the screws and remove the lower trim in the driver's footwell.
Remove the plug from the switch by pressing the mounting tabs.
Press the brake pedal. Pull the push rod (1) and bushing (2) fully forward.
In this position, squeeze the mounting brackets and pull the switch back out of the mounting.
Installation
Insert the switch with the sleeve fully pulled out into the support of the part and snap it into place.
Slide the red mounting sleeve into the switch until the collar of the sleeve rests against the pedal support.
Put the plug on and secure it.
Check if the brake light comes on when the ignition is on.
Install the bottom trim.