Control unit required for OEM upgrade of Xenon headlights for VW Amarok. Please contact a local VW dealer to replace the on-board control unit. Connect the vehicle to a VW diagnostic machine. The current coding must be copied to the new control unit. After replacing the vehicle's keys, they must be reactivated. Package contents: Control unit. Note: Xenon headlights can only be retrofitted to vehicles equipped with the 7H0937090X on-board network control unit. Not suitable for the USA.