Location of BAS components
1 - The main brake cylinder; 2 - Vacuum pipe; A1e17 - ABS fault indicator lamp; A1e39 - Signal light EA; A1e47 - BAS / ESP fault indicator lamp; A1e48 - BAS / ASR malfunction indicator lamp; A1e49 - BAS / ETS fault indicator lamp; A7 / 7 - Vacuum amplifier; A7 / 7b1 - BAS diaphragm displacement sensor; A7/7s1 - BAS system switch; A7 / 7u1 - Solenoid valve of the BAS system; N48 - BAS system control unit; Y61 - Brake Master Cylinder Shift Valve
Brake Assist Diaphragm Sensor
The location of the BAS system components is shown in the illustrations.