Mercedes Ghost Computer 1/ 0155 458232 Part Number; It refers to the steering computer associated with the brake system (PML / ETS / ABS Control Module). It is an electronic control unit that regulates steering stiffness, the anti-slip system, and the brakes. 2/ A0125459532 General Control Computer or Basic Module Control Unit / Fuse General Control Module). This part is often compatible with classic Mercedes S-Class cars (W140) such as S320 and S500 models made between 1992 and 1995.