| -T6o- (A) | Designation | | -T20a- (B) | Designation | | -T16a- (C) | Designation | | -T32a- (D) | Designation |
| 1 | | | 1 | Driver door contact switch -F2- | | 1 | | | 1 | Central locking SAFE function warning lamp -K133- |
| 2 | | | 2 | | | 2 | Driver side automatic anti-dazzle exterior mirror -Y20- | | 2 | |
| 3 | Driver side window regulator motor -V147- | | 3 | | | 3 | Driver side turn signal repeater bulb in exterior mirror -L131- | | 3 | |
| 4 | | | 4 | | | 4 | | | 4 | Terminal 58 |
| 5 | | | 5 | Front left central locking actuator -F131- | | 5 | Driver side mirror adjustment motor -V17-
Driver side mirror adjustment motor -V149- | | 5 | Terminal 31 |
| 6 | Driver side window regulator motor -V147- | | 6 | Front left central locking actuator -F131- | | 6 | | | 6 | |
| | | | 7 | | | 7 | Driver side automatic anti-dazzle exterior mirror -Y20- | | 7 | |
| | | | 8 | Interior mirror -EX5- | | 8 | | | 8 | Light 1 for front left door background lighting -L199-
Driver side door interior handle illumination bulb -L146-
Light 2 for front left door background lighting -L203- |
| | | | 9 | | | 9 | | | 9 | |
| | | | 10 | | | 10 | Driver side fold-in mirror motor -V121- | | 10 | |
| | | | 11 | | | 11 | Heated exterior mirror on driver side -Z4- | | 11 | |
| | | | 12 | Driver door central locking motor -V56- | | 12 | | | 12 | |
| | | | 13 | Driver door central locking SAFELOCK function motor -V161- | | 13 | | | 13 | Central locking button -E600- |
| | | | 14 | B507 Connection (convenience CAN bus, low), in interior wiring harness | | 14 | | | 14 | |
| | | | 15 | B506 Connection (convenience CAN bus, high), in interior wiring harness | | 15 | Driver side fold-in mirror motor -V121- | | 15 | |
| | | | 16 | | | 16 | Driver side mirror adjustment motor -V17- | | 16 | |
| | | | 17 | Interior mirror -EX5- | | | | | 17 | |
| | | | 18 | | | | | | 18 | |
| | | | 19 | Terminal 30 | | | | | 19 | |
| | | | 20 | Terminal 31 | | | | | 20 | |
| | | | | | | | | | 21 | |
| | | | | | | | | | 22 | |
| | | | | | | | | | 23 | |
| | | | | | | | | | 24 | Mirror adjustment switch -E43-
Mirror adjustment changeover switch -E48- |
| | | | | | | | | | 25 | Adjustment switch for mirror with fold-in feature -E168- |
| | | | | | | | | | 26 | |
| | | | | | | | | | 27 | |
| | | | | | | | | | 28 | Central locking button -E600- |
| | | | | | | | | | 29 | |
| | | | | | | | | | 30 | |
| | | | | | | | | | 31 | Front right window regulator switch in driver door -E81- |
| | | | | | | | | | 32 | Front left window regulator switch -E40- |
| -T73a- (A) | Designation | | -T46a- (B) | Designation | | -T73b- (C) | Designation |
| 1 | Terminal 30 | | 1 | Right headlight dipped beam bulb -M31- | | 1 | Terminal 30 left light supply |
| 2 | Heated seat cushion for driver seat -Z6- | | 2 | Right headlight main beam bulb -M32-
Right static cornering light -M52- | | 2 | |
| 3 | Tank filler flap release -EX13- - | | 3 | | | 3 | Bulb 2 for rear right turn signal -M81- |
| 4 | Tank filler flap release -EX13- + | | 4 | Left daytime running light bulb -L174- | | 4 | Terminal 15 |
| 5 | Heated seat cushion for front passenger seat -Z8- | | 5 | Right fog light bulb -L23-
Right static cornering light -M52- | | 5 | Left headlight dipped beam bulb -M29- |
| 6 | Rear right door central locking motor, lock -V215- | | 6 | | | 6 | Left tail light bulb -M4-
Right tail light bulb -M2- |
| 7 | Rear right door central locking motor, lock -V215- | | 7 | Windscreen and rear window washer pump -V59- | | 7 | |
| 8 | | | 8 | Windscreen and rear window washer pump -V59- | | 8 | Right brake and tail light bulb -M22- |
| 9 | Rear lid central locking motor -V53- | | 9 | Left washer jet heater element -Z20-
Right washer jet heater element -Z21- | | 9 | Bulb 2 for rear left turn signal -M80- |
| 10 | | | 10 | Front left side marker bulb -M33- | | 10 | Left brake and tail light bulb 2 -M58- |
| 11 | | | 11 | Reversing light switch -F4- | | 11 | Left reversing light bulb -M16- |
| 12 | Term. 31 | | 12 | Front right brake pad wear sender -G35- | | 12 | Glove compartment light -W6- |
| 13 | Terminal 15 voltage supply relay -J329- | | 13 | Brake fluid level warning contact -F34- | | 13 | |
| 14 | Terminal 15 voltage supply relay -J329- Signal line | | 14 | Bonnet contact switch -F387- | | 14 | |
| 15 | Sliding sunroof adjustment control unit -J245- , LIN bus | | 15 | | | 15 | Light switch -E1- , dipped beam position |
| 16 | Convenience CAN bus high | | 16 | Coolant shortage indicator sender -G32- | | 16 | Light switch -E1- , automatic headlight control position |
| 17 | Convenience CAN bus low | | 17 | | | 17 | |
| 18 | | | 18 | | | 18 | |
| 19 | | | 19 | Ambient temperature sensor -G17- , -
Coolant shortage indicator sender -G32- , -
Windscreen washer fluid level sender -G33- , - | | 19 | Switch and instrument illumination regulator -E20- |
| 20 | | | 20 | Front right turn signal bulb -M7- | | 20 | |
| 21 | | | 21 | Right side light bulb -M3-
Front right side marker bulb -M34- | | 21 | Driving program button -E598- |
| 22 | | | 22 | Front right headlight -MX2- , xenon shutter | | 22 | |
| 23 | | | 23 | Front left headlight -MX1- , xenon shutter | | 23 | |
| 24 | | | 24 | Horn relay -J413- | | 24 | Heated rear window relay -J9- |
| 25 | | | 25 | | | 25 | |
| 26 | | | 26 | | | 26 | |
| 27 | | | 27 | Ambient temperature sensor -G17- | | 27 | |
| 28 | | | 28 | Windscreen washer fluid level sender -G33- | | 28 | Rain and light sensor -G397-
Humidity sender -G355- |
| 29 | | | 29 | | | 29 | |
| 30 | Rear right door central locking motor, lock -V215- , safe | | 30 | Wiper motor control unit -J400- | | 30 | |
| 31 | Central locking button -E600- | | 31 | Anti-theft alarm system horn -H8- | | 31 | Rear right turn signal bulb -M8- |
| 32 | Rear lid handle release button -E234- | | 32 | Right daytime running light bulb -L175- | | 32 | Interior monitoring switch -E183- |
| 33 | Rear right door contact switch -F11- | | 33 | | | 33 | |
| 34 | Rear left door central locking motor, lock -V214- , safe | | 34 | | | 34 | Driving program button -E598- |
| 35 | Rear left door contact switch -F10- | | 35 | | | 35 | |
| 36 | Rear left door central locking motor, lock -V214- , safe + | | 36 | Front left turn signal bulb -M5- | | 36 | |
| 37 | Rear right door central locking motor, lock -V215- , safe + | | 37 | | | 37 | |
| 38 | | | 38 | | | 38 | |
| 39 | | | 39 | Left headlight main beam bulb -M30-
Left static cornering light -M51- | | 39 | |
| 40 | | | 40 | Anti-theft alarm system horn -H8- | | 40 | Front right seat temperature sender -G345- |
| 41 | | | 41 | | | 41 | |
| 42 | | | 42 | | | 42 | Hazard warning light switch -EX3- |
| 43 | Light switch -E1- | | 43 | | | 43 | Front left seat temperature sender -G344- |
| 44 | Ignition/starter switch -D- , terminal 15 | | 44 | | | 44 | |
| 45 | | | 45 | Left fog light bulb -L22-
Left static cornering light -M51- | | 45 | |
| 46 | Light switch -E1- , zero position | | 46 | Headlight washer system pump -V11- | | 46 | |
| 47 | Ignition/starter switch -D- , terminal 15 | | | | | 47 | |
| 48 | Rear right door contact switch -F11- | | | | | 48 | Indicator lamp for hazard warning light -K6- |
| 49 | Heated rear window button -E230- | | | | | 49 | |
| 50 | Rear left door contact switch -F10- | | | | | 50 | |
| 51 | Button for deactivating interior monitoring and vehicle inclination sensor -E616- | | | | | 51 | Start/Stop operation button -E693- |
| 52 | Rear lid contact switch for anti-theft alarm -F123- | | | | | 52 | |
| 53 | Terminal 31 | | | | | 53 | |
| 54 | Ignition/starter switch -D- , terminal S | | | | | 54 | |
| 55 | Switch and instrument illumination regulator -E20- | | | | | 55 | |
| 56 | | | | | | 56 | Front left seat temperature sender -G344- |
| 57 | High-level brake light bulb -M25- | | | | | 57 | |
| 58 | | | | | | 58 | Brake light switch -F- |
| 59 | Left number plate light -X4-
Right number plate light -X5- | | | | | 59 | |
| 60 | Rear left turn signal bulb -M6- | | | | | 60 | Start/Stop operation button -E693- |
| 61 | Rear window wiper motor -V12- | | | | | 61 | |
| 62 | Rear window wiper motor -V12- | | | | | 62 | Terminal 58d |
| 63 | Terminal 31 | | | | | 63 | Terminal 31 |
| 64 | Right reversing light bulb -M17- | | | | | 64 | |
| 65 | Right brake and tail light bulb 2 -M59- | | | | | 65 | |
| 66 | Terminal 30, right light supply | | | | | 66 | |
| 67 | | | | | | 67 | Front interior light -WX1- |
| 68 | Rear left door central locking motor, lock -V214- | | | | | 68 | |
| 69 | Rear left door central locking motor, lock -V214- | | | | | 69 | |
| 70 | | | | | | 70 | |
| 71 | Left brake and tail light bulb -M21- | | | | | 71 | |
| 72 | Rear left fog light bulb -L46-
Rear right fog light bulb -L47- | | | | | 72 | Front left footwell light -K268-
Front right footwell light -K269- |
| 73 | Terminal 30, central locking supply | | | | | 73 | Terminal 30 |
| | -T18a- (A) | Designation | -T26e- (B) | Designation |
| | 1 | | 1 | |
| | 2 | Front left sender for park assist steering on left side of vehicle -G568-1) | 2 | Front parking aid warning buzzer -H22-2) |
| | 3 | Front centre left parking aid sender -G254- | 3 | Park assist steering button -E581- |
| | 4 | Front right parking aid sender -G252- | 4 | Warning light for park assist steering -K241- |
| | 5 | | 5 | |
| | 6 | | 6 | Rear left parking aid sender -G203- |
| | 7 | | 7 | Rear centre right parking aid sender -G205- |
| | 8 | | 8 | Rear right park assist steering sender -G717-1) |
| | 9 | | 9 | Rear parking aid warning buzzer -H15-2) |
| | 10 | Front right parking aid sender -G252-
Front centre right parking aid sender -G253-
Front centre left parking aid sender -G254-
Front left parking aid sender -G255-
Front left sender for park assist steering on left side of vehicle -G568-1)
Front right sender for park assist steering on right side of vehicle -G569-1) | 10 | Front parking aid warning buzzer -H22-2) |
| | 11 | Front left parking aid sender -G255- | 11 | |
| | 12 | Front centre right parking aid sender -G253- | 12 | |
| | 13 | Front right sender for park assist steering on right side of vehicle -G569-1) | 13 | Terminal 31 |
| | 14 | Front right parking aid sender -G252-
Front centre right parking aid sender -G253-
Front centre left parking aid sender -G254-
Front left parking aid sender -G255-
Front left sender for park assist steering on left side of vehicle -G568-1)
Front right sender for park assist steering on right side of vehicle -G569-1) | 14 | Terminal 15 |
| | 15 | | 15 | Rear parking aid warning buzzer -H15-2) |
| | 16 | | 16 | Parking aid button -E266- |
| | 17 | | 17 | Parking aid warning lamp -K136- |
| | 18 | | 18 | Rear left parking aid sender -G203-
Rear centre left parking aid sender -G204-
Rear centre right parking aid sender -G205-
Rear right parking aid sender -G206-
Rear left park assist steering sender -G716-1)
Rear right park assist steering sender -G717-1)
|
| | | | 19 | Rear left park assist steering sender -G716-1) |
| | | | 20 | Rear centre left parking aid sender -G204- |
| | | | 21 | Rear right parking aid sender -G206- |
| | | | 22 | Rear left parking aid sender -G203-
Rear centre left parking aid sender -G204-
Rear centre right parking aid sender -G205-
Rear right parking aid sender -G206-
Rear left park assist steering sender -G716-1)
Rear right park assist steering sender -G717-1)
|
| | | | 23 | B664 Connection (running gear sensors CAN bus, low), in main wiring harness |
| | | | 24 | B663 Connection (running gear sensors CAN bus, high), in main wiring harness |
| | | | 25 | |
| | | | 26 | |
| -T20d- (A) | Designation | | -T20d- (A) | Designation |
| 1 | Terminal 30 | | 11 | Terminal 31 |
| 2 | Terminal 30 | | 12 | Terminal 31 |
| 3 | B698 Connection 3 (LIN bus) in main wiring harness | | 13 | B549 Connection 2 (LIN bus) in main wiring harness |
| 4 | | | 14 | Terminal 15 |
| 5 | B407 Connection 2 (convenience CAN bus, low), in main wiring harness | | 15 | B398 Connection 2 (convenience CAN bus, high), in main wiring harness |
| 6 | B390 Connection 1 (powertrain CAN bus, low), in main wiring harness | | 16 | B383 Connection 1 (powertrain CAN bus, high), in main wiring harness |
| 7 | B109 Connection 1 (CAN bus extended low), in main wiring harness | | 17 | B108 Connection 1 (CAN bus extended high), in main wiring harness |
| 8 | B664 Connection (running gear sensors CAN bus, low), in main wiring harness | | 18 | B663 Connection (running gear sensors CAN bus, high), in main wiring harness |
| 9 | Diagnostic connection -U31- | | 19 | Diagnostic connection -U31- |
| 10 | A179 Connection (infotainment CAN bus, low), in dash panel wiring harness | | 20 | A178 Connection (infotainment CAN bus, high), in dash panel wiring harness |
| -T12f- (M) | Designation | | -T12g- (K) | Designation | | -T12c- (L) | Designation |
| 1 | B769 Connection 2 (diagnostic CAN bus, high), in main wiring harness | | 1 | Interface for external multimedia units -R215-1)
Connection for external audio sources -R199-1) | | 1 | Telephone microphone -R38- |
| 2 | Display unit for front information display and operating unit control unit -J685- | | 2 | Interface for external multimedia units -R215-1)
Connection for external audio sources -R199-1) | | 2 | |
| 3 | | | 3 | Interface for external multimedia units -R215-1)
Connection for external audio sources -R199-1) | | 3 | |
| 4 | | | 4 | Interface for external multimedia units -R215-1)
Connection for external audio sources -R199-1) | | 4 | |
| 5 | | | 5 | Interface for external multimedia units -R215-1) | | 5 | |
| 6 | A178 Connection (infotainment CAN bus, high), in dash panel wiring harness | | 6 | Interface for external multimedia units -R215-1) | | 6 | Rear overhead view camera -R246- |
| 7 | B799 Connection 4 (diagnosis), in main wiring harness | | 7 | Interface for external multimedia units -R215-1)
Connection for external audio sources -R199-1) | | 7 | Telephone microphone -R38- |
| 8 | Display unit for front information display and operating unit control unit -J685- | | 8 | Interface for external multimedia units -R215-1)
Connection for external audio sources -R199-1) | | 8 | |
| 9 | | | 9 | Interface for external multimedia units -R215-1) | | 9 | |
| 10 | | | 10 | Interface for external multimedia units -R215-1) | | 10 | |
| 11 | | | 11 | Interface for external multimedia units -R215-1) | | 11 | |
| 12 | A179 Connection (infotainment CAN bus, low), in dash panel wiring harness | | 12 | Interface for external multimedia units -R215-1) | | 12 | Rear overhead view camera -R246- |
| -T16j- (A) | Designation | | -T16k- (B) | Designation | | -T20e- (C) | Designation |
| 1 | Left temperature flap control motor -V158- | | 1 | Potentiometer for defroster flap control motor -G135-
Potentiometer for left temperature flap control motor -G220-
Potentiometer for right temperature flap control motor -G221-
Potentiometer for front air distribution flap control motor -G642-
Potentiometer for fresh air/recirculated air, air flow flap control motor -G644- | | 1 | Sunlight penetration photosensor -G107- |
| 2 | Left temperature flap control motor -V158- | | 2 | Potentiometer for left temperature flap control motor -G220- | | 2 | |
| 3 | Defroster flap control motor -V107- | | 3 | Potentiometer for right temperature flap control motor -G221- | | 3 | Sunlight penetration photosensor -G107- |
| 4 | Defroster flap control motor -V107- | | 4 | Potentiometer for defroster flap control motor -G135- | | 4 | |
| 5 | Front air distribution flap control motor -V426- | | 5 | Potentiometer for front air distribution flap control motor -G642- | | 5 | B506 Connection (convenience CAN bus, high), in interior wiring harness |
| 6 | Front air distribution flap control motor -V426- | | 6 | | | 6 | B507 Connection (convenience CAN bus, low), in interior wiring harness |
| 7 | | | 7 | Potentiometer for fresh air/recirculated air, air flow flap control motor -G644- | | 7 | |
| 8 | | | 8 | Footwell vent temperature sender -G192- | | 8 | |
| 9 | Fresh air/recirculated air, air flow flap control motor -V425- | | 9 | | | 9 | Sunlight penetration photosensor -G107- |
| 10 | Fresh air/recirculated air, air flow flap control motor -V425- | | 10 | | | 10 | |
| 11 | Right temperature flap control motor -V159- | | 11 | Evaporator temperature sensor -G308- | | 11 | |
| 12 | Right temperature flap control motor -V159- | | 12 | | | 12 | |
| 13 | | | 13 | | | 13 | Left vent temperature sender -G150- |
| 14 | | | 14 | Potentiometer for defroster flap control motor -G135-
Footwell vent temperature sender -G192-
Potentiometer for left temperature flap control motor -G220-
Potentiometer for right temperature flap control motor -G221-
Evaporator temperature sensor -G308-
Potentiometer for front air distribution flap control motor -G642-
Potentiometer for fresh air/recirculated air, air flow flap control motor -G644- | | 14 | Right vent temperature sender -G151- |
| 15 | | | 15 | | | 15 | |
| 16 | | | 16 | | | 16 | A209 Connection 1 (LIN bus) in dash panel wiring harness |
| | | | | | | 17 | Sunlight penetration photosensor -G107-
Left vent temperature sender -G150- ,
Right vent temperature sender -G151- |
| | | | | | | 18 | Air conditioner compressor regulating valve -N280- |
| | | | | | | 19 | Terminal 31 |
| | | | | | | 20 | Terminal 30 |
| -T6ah- (A) | Designation | | -T20b- (B) | Designation | | -T16l- (C) | Designation | | -T32b- (D) | Designation |
| 1 | | | 1 | | | 1 | Front passenger side entry light in exterior mirror -W53- | | 1 | |
| 2 | | | 2 | | | 2 | | | 2 | |
| 3 | Front passenger side window regulator motor -V148- | | 3 | | | 3 | Front passenger side turn signal repeater bulb -L132-
Heated exterior mirror on front passenger side -Z5- | | 3 | Light for passenger door ambient lighting -W87- |
| 4 | | | 4 | | | 4 | Front passenger side mirror adjustment motor -V25-
Front passenger side mirror adjustment motor -V150- | | 4 | Terminal 58 |
| 5 | | | 5 | Front passenger door contact switch -F3- | | 5 | Front passenger side mirror adjustment motor -V25-
Front passenger side mirror adjustment motor -V150- | | 5 | Terminal 31 |
| 6 | Front passenger side window regulator motor -V148- | | 6 | Front passenger door central locking actuator for SAFELOCK function -F244- | | 6 | | | 6 | |
| | | | 7 | | | 7 | Front passenger side mirror adjustment motor -V25- | | 7 | |
| | | | 8 | Interior mirror -EX5- | | 8 | Front passenger side mirror adjustment motor -V150- | | 8 | Light for passenger door ambient lighting -W87- |
| | | | 9 | | | 9 | Front passenger side fold-in mirror motor -V122- | | 9 | |
| | | | 10 | Rear right window regulator motor -V27- | | 10 | Front passenger side fold-in mirror motor -V122- | | 10 | |
| | | | 11 | Front passenger door central locking motor -V57-
Front passenger door central locking SAFELOCK function motor -V162- | | 11 | Front passenger side turn signal repeater bulb -L132- | | 11 | |
| | | | 12 | Front passenger door central locking SAFELOCK function motor -V162- | | 12 | | | 12 | |
| | | | 13 | Front passenger door central locking motor -V57- | | 13 | Front passenger side mirror adjustment motor -V25- | | 13 | Central locking button -E600- |
| | | | 14 | B407 Connection 2 (convenience CAN bus, low), in main wiring harness | | 14 | Front passenger side mirror adjustment motor -V25-
Front passenger side mirror adjustment motor -V150- | | 14 | |
| | | | 15 | B398 Connection 2 (convenience CAN bus, high), in main wiring harness | | 15 | Heated exterior mirror on front passenger side -Z5- | | 15 | |
| | | | 16 | | | 16 | Front passenger side mirror adjustment motor -V150- | | 16 | |
| | | | 17 | Interior mirror -EX5- | | | | | 17 | |
| | | | 18 | | | | | | 18 | |
| | | | 19 | Terminal 30 | | | | | 19 | |
| | | | 20 | Terminal 31 | | | | | 20 | |
| | | | | | | | | | 21 | |
| | | | | | | | | | 22 | |
| | | | | | | | | | 23 | |
| | | | | | | | | | 24 | |
| | | | | | | | | | 25 | |
| | | | | | | | | | 26 | |
| | | | | | | | | | 27 | |
| | | | | | | | | | 28 | Central locking button -E600- |
| | | | | | | | | | 29 | |
| | | | | | | | | | 30 | |
| | | | | | | | | | 31 | |
| | | | | | | | | | 32 | Front passenger side window regulator button -E716- |
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