The brake light switch might not be connected properly. Remove the brake light switch for 10 seconds and replace it to its original position.
brake pedal light switch.
It sounds as if the contact switch that controls the brake lights may be faulty or out of adjustment. Under the dash, look to where the brake pedal lever is suspended and you should see an electrical switch with a "plunger" that is ALMOST in contact with the pedal lever. This is the switch that senses when the brake pedal has been applied and activates the brake lights. It is, necessarily, a 'tight' adjustment. If it has slipped out of adjustment it may be sensing that the brakes are always 'on.' If not, then the switch may be worn out and needs to be replaced. The actual problem is your 3rd brake light. I had the same problem, my brake lights stayed on when it was out of Park. We replaced the brake light switch as recommended. Being very frustrated with the problem, I started to troubleshoot. We took off the 3rd brake unit and not only were the lights burned out, but the unit had started to melt. I went to a Ford Dealership and picked up the complete unit for just around $40.00. Now the problem has been solved. I hope this helps others.
Are you sure you need the fuse for the cruise control. My cruise control wasn't working, neither were my brake lights. All 7 bulbs were burnt out. When the brake lights were replaced the cruise control worked.
The brake light switch is located under the dash. It is connected to the upper arm on the Brake pedal
Running lights (left side): Fuse #47 -- Running lights (right side): Fuse #48 -- Brake lights: Fuse #54. Fuse panel is on the lower left side (underneath) the dashboard. NOTE: If it is your brake lights that are not working and fuse # 54 looks okay, check the brake light switch, it may have gone bad.
When you have your head lights turned on (the switch turned to the right all the way), pull that same switch out towards you
Most ford brake switches can be replaced with no tools. They are set up a few different ways, but usually you twist them a 1/4 turn and remove. It is located above the brake pedal under the dash.
The screws that hold the rear lights in place on a focus are inside behind the rear pillar trim
Check your brake pads.
Fuse number 54
If NONE of the brake lights are working (including the "high mount" center light, I'd check the stop light switch next. It is located up under the dashboard near the top of the brake pedal lever. CHeck to see that it is still in proper adjustment (barely touching the lever, and if it is, it may need replacement.
well ,it could be several things, i have heard of things like a varmit or animal eating away at the wires of a car or a shorted-circuit, blown fuse or fuse circuit.. but most often it as simple as a brake-switch gone bad...it is located most often just under the brake pedale in most vehicles. and usaually is less then $10 simple to replace. The BIG question, does your third brake light still work? If it does, check your turn signal switch. Primary brake lights are wired through the turn singal switch in order to cancel the break light when a turn singal is activated. I have never replace a turn singal switch on a Ford Focus so you should consult a repair manual on the proper procedure of replacing this switch, if it is deemed defective.