Fiat 500L Owner's Handbook Manual page 6

SYMBOLS
Some vehicle components have coloured labels whose symbols indicate precautions to be observed when using this
component.
A plate summarising these symbols can also be found under the bonnet.
VEHICLE CHANGES/ALTERATIONS
IMPORTANT Any change or alteration of the vehicle might seriously affect its safety and road holding, thus causing accidents,
in which the occupants could even be fatally injured.