Bulb - Hatchback
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The Center High Mounted Stop Lamp (CHMSL) contains LED bulbs. The service procedure for these LED bulbs is to replace the LED lamp assembly. Refer to LAMP, CENTER HIGH MOUNTED STOP, INSTALLATION .