Iowa Code § 322A.21

A condition, stipulation, or provision in a franchise requiring a franchisee to waive compliance with or relieving a person of a duty or liability imposed by or a right provided by this chapter or order under this chapter is void. This section shall not affect the settlement of disputes, claims, controversies or civil lawsuits arising or brought pursuant to this chapter by written release or other written document where separate and adequate consideration is offered and accepted.