Highline door control parts for Seat Leon 5F Some vehicles require the replacement of door control parts when retrofitting folding side mirrors Among other things, a diagnostic system (e.g. ODIS) is required for replacing the units Control unit Scope of delivery: Door control unit, front left Door control unit, front right Note: Only the coding of the factory-installed door control parts needs to be adopted. The material may partly come from vehicles of tested and have undergone a full functional test