Work around the vehicle and lubricate the hinges of the bonnet, doors and tailgate with a light machine oil. Check for the security and operation of all hinges, latches and locks (adjust where necessary) and check the operation of the central locking system if fitted. Where applicable, check the condition and operation of the tailgate struts, renewing them if either is leaking or no longer able to obtain secure struts for the tailgate in the raised position.