How do you replace seatbelt in infiniti G35?

To replace the seatbelt in an Infiniti G35, first, ensure the vehicle is turned off and the battery is disconnected for safety. Remove the lower trim panel and any necessary bolts to access the seatbelt assembly. Detach the old seatbelt from the anchor points, install the new seatbelt by securing it to the same anchor points, and reassemble the trim panel. Finally, reconnect the battery and test the seatbelt to ensure it functions properly.