Question

which symbol warns that there is something wrong with your alternator? *

Explanation:

The alternator is related to the vehicle's electrical system and battery charging. The battery symbol (Option 4) typically indicates issues with the charging system (including the alternator). Option 1 is for brake system, Option 2 for tire pressure, Option 3 for oil.

Answer:

Option 4. The battery - shaped symbol (with + and -) warns about alternator/charging system issues.