Patent ID: 8306825

Claim:
A voice guidance system for a vehicle providing voice guidance about operation procedures for an in-vehicle system, said voice guidance system comprising: a use checking means for checking whether an in-vehicle system will be used; a voice outputting means for outputting voice guidance about a predetermined operation required to use the in-vehicle system; an operation result checking means for checking whether a user has performed said predetermined operation on the in-vehicle system; a determination result storing means for storing a determined result of the operation result checking means; and a changing means for, when the use checking means determines that the in-vehicle system will be used, causing the voice outputting means to output the voice guidance if the stored determination indicates that the user has not previously performed the predetermined operation and causes the voice outputting means not to output the voice guidance if the stored determination result indicates that the user has previously performed the predetermined operation, wherein the determination result storing means erases a stored determination result indicating that a user has performed the predetermined operation in the past when the operation result checking means determines that the user has currently failed to perform the predetermined operation.