SIMOS 3.4A ECU Files for Audi & VW

SIMOS 3.4A is a Continental/Siemens petrol engine control unit used by the VAG group. We currently have 7 SIMOS 3.4A files in stock and 4 hardware numbers. Each one is an original read from a working unit. Vehicles that use this unit here include Audi and VW. Frequent models: A4 and PASSAT. Available as Immo Off and Original File files. Always compare the software number on your label with the number in the file title: two units with the same ECU type can still need different software. Missing your version? Request the file with the label numbers and we will source it.