(1) A savings bank whose term will expire by limitation, at any time preceding the expiration of such term, by amendment of its articles, may extend its corporate term for a limited period of time or in perpetuity.

  (2) A savings bank whose term has expired, but which has not been wound up or dissolved and which has nevertheless inadvertently continued its active business beyond such term, may renew its corporate existence by amendment of its articles with the consent of at least 2/3 of its members or the holders of at least 2/3 of the outstanding shares. The officers and directors de facto shall do and perform all things required of officers and directors de jure as respects calling a special meeting of the shareholders and submitting to them the question of renewing the corporate existence.

  (3) A savings bank de facto shall not be permitted to renew its corporate life unless the action is taken within 3 years after its term has expired and renewal does not relieve the savings bank from any penalties that may have accrued against it under any law of this state.

  (4) A savings bank whose term has been extended or renewed shall be the same savings bank and have the same members, shareholders, directors, and officers, enjoy all the rights, privileges, immunities, and powers, and be subject to all the liabilities that it respectively possessed and was subject to before the extension or renewal of its existence.