Fiat 500X 2019 Owner's Manual page 302

300 IN CASE OF EMERGENCY
Light Access
1 — Screws
2 — Access Door
3. Turn the bulb and bulb holder assembly counter-
clockwise and then remove it sliding it outwards.
4. Replace the bayonet-fitted bulb.
Bulb Assembly
1 — Bulb Holder
2 — Bulb
5. Finally, refit the inspection door, fully tightening fixing
screws.