Iowa Code § 322G.11
This chapter, except for the requirements of section 322G.12, does not impose any liability on a franchised motor vehicle dealer or create a cause of action by a consumer against a dealer. A dealer shall not be made a party defendant in any action involving or relating to this chapter, except as provided in this section. The manufacturer shall not charge back or require reimbursement by the dealer for any costs, including but not limited to any refunds or vehicle replacements, incurred by the manufacturer pursuant to this chapter, in the absence of a finding by a court that the related repairs had been carried out by the dealer in a manner substantially inconsistent with the manufacturer's published instructions. A manufacturer who is found by a court to have improperly charged back a dealer because of a violation of this section is liable to the injured dealer for full reimbursement plus reasonable costs and any attorney's fees.
Iowa Code § 322G.11
91 Acts, ch 153, §11; 95 Acts, ch 45, §7