№ |
Amps |
Function/component |
1 |
– |
not assigned |
2 |
7.5A |
2018-2020:
USB connection 1 |
3 |
7.5A |
2016-2020:
Left washer jet heater element
Right washer jet heater element |
4 |
10A |
DC/AC converter with socket, 12V – 230V
Voltage stabiliser
Starter relay 1 (with start-stop)
Starter relay 2 (with start-stop) |
5 |
10A |
Electronically controlled damping control unit |
6 |
10A |
2015-2020:
Blind Spot Monitor control unit
Blind Spot Monitor control unit 2 |
7 |
– |
not assigned |
8 |
– |
not assigned |
9 |
7.5A |
Warning lamp for airbag deactivated on front passenger side
Airbag control unit |
10 |
5A |
2013-2020 (taxi):
Taximeter
Mirror taximeter
Voltage stabiliser
Taxi alarm remote control, control unit |
11 |
10A |
All-wheel drive control unit |
12 |
10A |
Left gas discharge (xenon) bulb |
13 |
5A |
2010-2015:
Electromechanical parking brake button
Oil level and oil temperature sender
Reversing light switch
Operating unit in front of centre console
High-pressure sender
Parking aid control unit
Interior mirror
Front camera for driver assist systems |
13 |
5A |
2015-2020:
Operating unit in front of centre console
Reversing light switch
High-pressure sender
Trailer detector control unit
Air quality sensor
Adaptive cruise control unit
Parking aid control unit
Park assist steering control unit
Front camera for driver assist systems
Automatic anti-dazzle interior mirror |
14 |
7.5A |
2010-2015:
Light switch
Trailer detector control unit
Control unit for electromechanical parking brake
ABS control unit
Brake light switch
Power steering control unit
Engine/motor control unit
Data bus diagnostic interface
Control unit in dash panel insert |
14 |
7.5A |
2015-2016:
Light switch
ABS control unit
Control unit in dash panel insert
Trailer detector control unit
Power steering control unit
Data bus diagnostic interface
Engine/motor control unit |
14 |
7.5A |
2016-2020:
Light switch
ABS control unit
Control unit in dash panel insert
Operating unit in front of centre console
Power steering control unit
Switch module 2 in centre console
Data bus diagnostic interface
Engine/motor control unit
Electromechanical parking brake button
Oil level and oil temperature sender |
15 |
10A |
2010-2015:
Auxiliary heater operation relay
Diagnostic connection
Front left headlight, not xenon
Front right headlight, not xenon
Control unit for cornering light and headlight range control
Switch and instrument illumination regulator
Ar mass meter |
15 |
10A |
2015-2020:
Switch and instrument illumination regulator
Control unit for cornering light and headlight range control
Front left headlight, not xenon
Front right headlight, not xenon
Diagnostic connection |
16 |
10A |
Right gas discharge (xenon) bulb |
17 |
5A |
2010-2015:
Mobile telephone operating electronics control unit
Emergency call module control unit and communication unit |
17 |
5A |
2015-2020:
Emergency call module control unit and communication unit (LHD) |
18 |
7.5A |
2010-2015:
Taxi alarm remote control, control unit
Data transmission control unit |
19 |
– |
not assigned |
20 |
5A |
ABS control unit |
21 |
5A |
2010-2016:
2nd heat exchanger switch-off valve |
21 |
5A |
2016-2020:
Electromechanical parking brake button
Selector lever |
22 |
7.5A |
Light switch
Rain and light sensor
Reversing camera system control unit
Diagnostic connection |
23 |
7.5A |
2010-2015:
Selector lever sensors control unit
Electromechanical parking brake button
Climatronic control unit
Air conditioning system control unit
Operating and display unit for rear air conditioning system
Rear blower regulation sender
Remote control receiver for auxiliary coolant heater |
23 |
7.5A |
2015-2020:
Operating and display unit for rear air conditioning system
Rear blower regulation sender
Climatronic control unit
Remote control receiver for auxiliary coolant heater
2nd heat exchanger switch-off valve (2016-2020) |
24 |
7.5A |
Entry and start authorisation control unit |
25 |
7.5A |
Selector lever
Mechatronic unit for dual clutch gearbox |
26 |
5A |
2010-2016:
Air quality sensor |
27 |
– |
not assigned |
28 |
15A |
Rear window wiper motor |
29 |
30A |
2010-2015:
12V socket
12V socket 3
Blocking diode |
29 |
20A |
2015-2020:
Blocking diode
Cigarette lighter
12V socket
12V socket 2
12V socket 3
Onboard supply control unit (T52c/21)
Terminal 75 diagnosis feedback |
30 |
30A |
2010-2015:
Cigarette lighter
12V socket 2
Onboard supply control unit (T52c/21)
Terminal 75 diagnosis feedback |
30 |
20A |
2015:
Cigarette lighter
12V socket 2 |
30 |
30A |
2015-2020:
Blower relay |
31 |
– |
not assigned |
32 |
– |
not assigned |
33 |
– |
not assigned |
34 |
– |
not assigned |
35 |
– |
not assigned |
36 |
30A |
2010-2015:
Control unit for electromechanical parking brake |
36 |
5A |
2015-2016:
Two-way signal amplifier for mobile telephone/data services
Storage compartment with interface for mobile telephone |
36 |
20A |
2016-2020:
Control unit 1 for information electronics |
36 |
30A |
2020:
Right sliding door control unit |
37 |
10A/25A |
2010-2011:
Two-way radio
or
Sliding sunroof adjustment control unit |
37 |
25A |
2011-2020:
Sliding sunroof adjustment control unit |
38 |
10A/30A |
2010-2011:
Taximeter
Interior light switch
Taxi sign switch
Taxi alarm active button
Mirror taximeter
Front interior light button
or
Sunroof roller blind control unit |
38 |
30A |
2011-2020:
Sunroof roller blind control unit |
39 |
5A/7.5A |
Steering column electronics control unit |
40 |
5A |
2010-2015:
Multimedia system control unit |
40 |
5A |
2016-2020:
Two-way signal amplifier for mobile telephone/data services
Storage compartment with interface for mobile telephone |
41 |
5A |
Dash panel insert |
42 |
15A |
Electronically controlled damping control unit |
43 |
30A |
2010-2017:
Driver seat lumbar support adjistment switch
Front passenger seat lumbar support adjistment switch |
44 |
25A/30A |
Fresh air blower relay (LHD)
Heated rear window relay |
45 |
30A |
Front passenger door control unit
Rear right door control unit |
46 |
30A |
Driver door control unit
Rear left door control unit |
47 |
10A |
2011-2020 (taxi):
Interior light switch
Taxi sign switch
Taxi alarm active button
Mirror taximeter (2011-2015)
Front interior light button (2013-2015) |
48 |
15A |
Alarm horn
Interior monitoring sensor
Onboard supply control unit (T52c/1)
Terminal 30, Anti-theft alarm supply |
49 |
30A |
2010-2015:
Control unit for electromechanical parking brake |
49 |
7.5A |
2015-2020:
Relay for reducing agent metering system (diesel)
Delivery unit for reducing agent metering system (diesel) |
50 |
30A |
Onboard supply control unit (T52b/1)
Terminal 30, central locking supply |
51 |
30A |
Heated front seats control unit |
52 |
20A |
2010-2011:
Headlight washer system relay
Headlight washer system pump |
52 |
30A |
2011-2020:
Rear fresh air blower |
53 |
30A |
DC/AC converter with socket, 12V – 230V |
54 |
5A/10A |
Control unit for electronic steering column lock |
55 |
25A |
2010-2013:
Trailer voltage supply control unit |
55 |
20A |
2013-2020:
All-wheel drive control unit |
56 |
30A |
2010-2013:
Trailer detector control unit |
56 |
30A |
2015-2020:
Control unit for reducing agent metering system (diesel) |
57 |
10A |
2011-2015:
Two-way radio |
58 |
25A |
2010-2015:
Special vehicle control unit |
58 |
30A |
2015-2020 (taxi):
Voltage stabiliser |
58 |
20A |
2020:
Control unit 1 for information electronics (RHD) |