Fiat 500X Owner's Handbook Manual page 140

TYPES OF BULBS
The vehicle is equipped with the following bulbs:
Glass bulbs (type A): they are press-fitted. Pull to extract.
Bayonet-type bulbs (type B): to remove them from their holder, press
the bulb and turn it anticlockwise, then extract it.
Tubular bulbs (type C): release them from their contacts to remove.
Halogen bulbs (type D): to remove the bulb, turn the connector to the
side and pull it out.
Halogen bulbs (type E): to remove the bulb, turn it anticlockwise.
Xenon gas discharge bulb (type F): to remove the bulb, contact a
Fiat Dealership.
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