2021 Hyundai Elantra Owner’s Manual — Side Repeater Lamp Replacement (if equipped)

If the LED lamp (1) does not operate, have the vehicle checked by an authorized HYUNDAI dealer.
The LED lamps cannot be replaced as a single unit because it is an integrated unit. The LED lamps has to be replaced with the unit.
A skilled technician should check or repair the LED lamp, for it may damage related parts of the vehicle.