A1 General module

Connector overview

NumberX-pin, colorDescription
X25354-pin, blackConnector B General module
X25426-pin, blackConnector C General module
X33215-pin, blackConnector A General module

Pin assignments at connector X253

PinTypeDescription / Signal typeConnection /
Measuring notes
1EWindshield wipe signal 1Wiper/washer switch
   
2 Not used 
   
3EWindshield wipe signal 2Wiper/washer switch
   
4EOpen window signalPassenger's power window switch
   
5EOpen window signalSwitch block, driver's door
   
6ETrunk lid open signalTrunk lid locking switch
   
7ECentral arrest (ZV)Global locking switch
   
8EInterior lights signalElectrochromic interior rear-view mirror with integrated interior lights
   
9E/AK-bus signal lineK-bus splice
   
10 Not used 
   
11AWiper control IWiper relay
   
12AHeadlight wash controlHeadlight washer module
   
13ALock motor signalLock switch, driver's door
   
14 Not used 
   
15ACentral arrest (ZV)Central locking drive, glovebox
   
16ACentral arrest (ZV)Lock switch, front passenger's door
   
17AUnlock motor signalZV drive rear lid
   
18AInterior lightsInterior lights splice
   
19ESignal Windshield washingWiper/washer switch
   
20EDriver's door unlock signalLock switch, driver's door
   
21 Not used 
   
22EDriver's door lock signalLock switch, driver's door
   
23 Not used 
   
24 Not used 
   
25EPassenger's door contact signalLock switch, front passenger's door
   
26EDriver's door contact signalLock switch, driver's door
   
27MTerminal 31Ground connector X1863
   
28 Not used 
   
29 Not used 
   
30AWiper control IWiper relay
   
31ASignal, release fuel filler flapCentral locking fuel tank access flap relay
   
32ACentral arrest signalLock switch, driver's door
   
33AUnlock motor signalLock switch, front passenger's door
   
34AUnlock motor signalCentral locking drive, glovebox
   
35 Not used 
   
36 Not used 
   
37ESignal, lock gloveboxMicroswitch for glovebox
   
38 Not used 
   
39ESignal Headlight washer systemWiper/washer switch
   
40EClose window signalPassenger's power window switch
   
41EClose window signalSwitch block, driver's door
   
42ETrunk lid contactZV drive rear lid
   
43ASignal, release fuel filler flapTrunk lid locking switch
   
44 Not used 
   
45EWipers in motion signalWiper motor
   
46 Not used 
   
47ETerminal 30Fuse F37
   
48 Not used 
   
49ERemote control signal Central locking system (ZV)Electrochromic interior rear-view mirror with integrated interior lights
   
50 Not used 
   
51AUnlock motor signalLock switch, driver's door
   
52 Not used 
   
53 Not used 
   
54ALock motor signalLock switch, front passenger's door
   

Pin assignments at connector X254

PinTypeDescription / Signal typeConnection /
Measuring notes
1 Not used 
   
2 Not used 
   
3 Not used 
   
4 Not used 
   
5ASignal, DWA statusTilt sensor
   
6ETilt signalTilt sensor
   
7ESignal, front lid contactUnderhood light switch
   
8AActivation Antitheft alarm hornAnti-theft horn (DWA)
   
9 Not used 
   
10 Not used 
   
11 Not used 
   
12 Not used 
   
13 Not used 
   
14 Not used 
   
15 Not used 
   
16 Not used 
   
17 Not used 
   
18 Not used 
   
19 Not used 
   
20 Not used 
   
21 Not used 
   
22 Not used 
   
23AActivation, DWA-LEDElectrochromic interior rear-view mirror with integrated interior lights
   
24EInterior protectionInterior protection control module
   
25 Not used 
   
26EChangeover to front passenger's sideMirror adjustment switch
   

Pin assignments at connector X332

PinTypeDescription / Signal typeConnection /
Measuring notes
1ETerminal 30Fuse F46
   
2AActivation Washer pumpWasher pump
   
3AConsumer cut-off signalConsumer cut-off splice
   
4ACentral arrest (ZV)Central locking drive, center console tray
   
5 Not used 
   
6AOpen window signalPassenger's window motor
   
7AOpen window signalDriver's window motor
   
8ETerminal 30Fuse F39
   
9ETerminal 30Fuse F38
   
10ETerminal 30Fuse F36
   
11AUnlock motor signalCentral locking drive, center console tray
   
12 Not used 
   
13AClose window signalPassenger's window motor
   
14AClose window signalDriver's window motor
   
15MTerminal 31Ground X10012