BMW i8 faulty lower radiator blinds with unknown resolution on BMW i8

Some BMW i8 owners report experiencing issues with faulty lower radiator blinds, which can trigger the Check Engine light. Damage to these blinds may not be covered under warranty if caused by external factors, such as rocks. Repair costs can be significant, with dealers quoting around $1,100 for parts and labor, while alternative sources like eBay may offer the part for approximately $150. Owners often find that running a computer diagnostic can reveal specific fault codes related to control deviation and performance problems. Initial repair attempts frequently involve replacing the top radiator blind actuator; however, this may not resolve the issue if wiring or blockages are also at fault. Additionally, some owners encounter challenges with warranty claims due to BMW's policies regarding damaged radiator blinds.