Common indications of this issue with LED bulbs including intermittent working or flickering, fast flashing or not working at all - as well as the display on your dashboard! This is because LED car bulbs use such low power (less than 1w in most cases) that the car can not feel any resistance in the cuircuit and thinks that the bulbs have blown - hence the warning on the dash display. These bulbs have been designed with built in circuitry that fools the onboard computer that the bulb is now working.
These bulbs are available in a Side facing version as well - see here for details.
These bulbs are only available in bright white and are sold as a pair
