Hi i have sorted this problem on my 99 focus ghia check both your tail light bulbs someone put the wrong bulb in and i had the exact same problems you described the bulb for brake tail light has two steel connecters and and all other bulbs have one i put proper bulb in and the problem disappeared now lights working perfect and sidelights dont come on now when i brake change both brake tail.
2014 ford focus brake light bulb fault.
Even with a new bulb i still get the fault.
Sure enough i caught the left brake light out this time with the parking filament working fine.
Haven t checked fuses as i don t know which to check due to misplaced but here somewhere manual.
So i went to replace the oem bulb with a fresh bosch 3157 bulb from amazon.
I recently got a brake lamp fault.
I have a focus 2010.
Made a stop just about an hour ago and the notification came up again.
The front indicator does not work as well as right side brake light.
No bulb fault notification anyway.
Dear fellow escapees yesterday i was sitting at a red light in traffic with my 500 mile old 2014 fe titanium.
My wife hopped in the car to test the brakes.
Drove the car around today and it was fine all day.
The light changes green and about three seconds into my acceleration around 2nd or 3rd gear i hear the distinctly annoying beeping noise coming from the dash and the all too familiar fault code message appear on the driver display.
Equip cars trucks suvs with 2014 ford focus brake light mini bulb from autozone.
So i swopped the two bulb holders over but no change.
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