2024 BMW I4 Suspension Problems

Mechanical failure on the car air suspension especially on back left of the car. Car parked overnight and it automatically lowered and driving it out of the drive way there was no error that popped out on low suspension until driving out of drive way. That caused the scratch on left side under carriage. Dealer refused to run diagnostics to determine true cause of issue until we pay for the diagnosis although this car is newly purchased and covered under warranty period. Dealer is trying to put the blame on me although it is a malfunction with the cars air suspension. Read that this problem happens to i4’s often on forums and I don’t feel safe driving the car until this issue is resolved but I’m unable to proceed without proper diagnosis from BMW service.