Electrical equipment
Specifications
In this manual: Electrical equipment
~7min read
Starting and charging
BATTERY
It is located in the passenger compartment, under the front passenger's footwell.
Voltage:
12 volts.
Starting capacity: 680 amps.
Capacity:
74 amp-hours.
ALTERNATOR
Three-phase alternator with built-in electronic regulator, driven from the crankshaft by a belt shared with all the accessories. It is located at the rear right of the engine and is accessible from underneath the vehicle after removing the undertray.
Alternator charging current:
At 2,000 rpm:
- maximum: 140 A.
- minimum: 110 A.
Lighting and signalling
EXTERIOR LIGHTING
FRONT AND SIDE LIGHTS
Main headlamps:
- low beam (halogen): H7 55 watts
- low beam (xenon): D2S 35 watts
- high beam: H7 55 watts
Fog lamps: H11 55 watts
Position lights: W 5 watts
Turn signal lights: PY 21 watts
Mirror repeater lights: light-emitting diodes
REAR LIGHTS
Position lights: P 21 / 5 watts
Brake lights: P 21 watts
Fog light: P 21 watts
Turn signal lights: PY 21 watts
Reversing light: P 21 watts. Additional brake light: LED
License plate lights: C 5 watts
Electrical protection
FUSES AND RELAYS
The fuses and relays are located in 2 separate places (Fig.1):
- the fuses (F1) are located under the front passenger footwell, in front of the battery,
- the relays (K100) are located in the passenger compartment, under the dashboard, on the right-hand side.
Location of fuses (F1) and relays (K100) in the passenger compartment
Fig. 1
FUSE BOX (F1)
Passenger compartment fuse assignment (Fig.2)
| Fuses | Rating | Protected functions |
| 1 | 10 | Brake light switch (S9/1) |
| 2 | 25 | Heated rear window (R1) |
| 3 | 7.5 | Instrument cluster (A1) / Electronic anti-theft switch EZS (N73) |
| 4 | 15 | Electronic anti-theft switch EZS (N73) / Electric steering lock control module (N26/5) |
| 5 | 7.5 | HAU control module and keypad (N18) (manual climate control) or KLA keypad and control module (N22) (automatic climate control) |
| 6 | 15 | Left horn (H2) / Right horn (H2/1) |
| 7 | 25 | Fuel pump relay (relay K) |
| 8 | 25 | Roof control unit control module (N70) |
| 9 | 40 | ESP and BAS control module (N47-5) |
| 10 | 40 | Heater / air conditioning blower motor |
| 11 | 40 | Engine relay terminal 87 (relay L) |
| 12 | 5 | Steering column module (N80) / Multifunction steering wheel |
| 13 | 25 | Front left door control module (N69/1) |
| 14 | 25 | Front right door control module (N69/2) |
| 15 | 25 | ESP and BAS control module (N47-5) |
| 16 | 10 | Diagnostic connector (X11/4) / PTS control module (N62) (Parktronic system) |
| 17 | 5 | Rotary light switch (S1) |
| 18 | 7.5 | Reversing light switch (S16/2) (on manual gearbox 711 and 716) |
| 19 | 5 | Micromechanical yaw rate sensor AY transmitter (B24/15) |
| 20 | 7.5 | Restraint system control module (N2/7) |
| 21 | 30 | Starter relay (relay M) |
| 22 | 7.5 | Instrument cluster (A1) |
| 23 | 7.5 | Washer nozzle heater (R2/1) |
| 24 | 7.5 | Electric power steering (ES) control module (N68) |
| 25 | 7.5 | Brake light switch (S9/1) / ESP and BAS control module (N47-5) |
| 26 | 7.5 | Electronic selector module (N15/5) (on automatic gearbox 722) |
| 27 | 10 | CVT (continuously variable transmission) control module (Y3/9n1) (on automatic gearbox 722) |
| 28 | 5 | Rotary light switch (S1) / Compass |
| 29 | 30 | SAM control module (N10) |
| 30 | 25 | Terminal 87F relay (relay N) (Automatic gearbox / ESP system) |
| 31 | 5 | Central Gateway control module (N93) (vehicles up to 30.11.05) / Rotary light switch (S |
| 32 | - | - |
| 33 | 15 | Radio (A2) or radio and navigation unit (A2/56) or COMAND display and control unit (A40/3) |
| 34 | 25 | Rear left door control module (N69/3) (with electric windows) |
| 35 | 25 | Rear right door control module (N69/4) (with electric windows) |
| 36 | 7.5 | Mobile phone connection block (X39/37) (with phone prewiring) / Trailer control module (N28/3) (with towing hitch) |
| 37 | 7.5 | Restraint system control module (N2/7) / Passenger seat occupancy sensor (B41/1) or passenger seat occupancy sensor with child seat detection (B48) |
| 38 | 25 | |
| 39 | 25 | Front wiper motor (M6/1) |
| 40 | 7.5 | Roof control unit control module (N70) |
| 25 | Roof system motor (M12/2) (with slatted roof) | |
| 41 | 15 | Tailgate wiper motor (M6/4) / Radio |
| 42 | 7.5 | Glove box light with switch (E13/2) / Left and right vanity mirror lights (E14/5) / Floor light switch (S18/7) and pedal actuation indicator switch (S146) (on driving school vehicle) |
| 43 | 7.5 | CDI control module (N3/9) (via end socket terminal 87M1e (Z7/35)) |
| 44 | 20 | CDI control module (N3/9) (via end socket terminal 87 M2e (Z7/36)) |
| 45 | 25 | CDI control module (N3/9) |
| 46 | 7.5 | UHI (universal hands-free interface) control module (N123/1) and network compensator E (A28/3) (with phone prewiring) |
| 47 | 7.5 | UHI (universal hands-free interface) control module (N123/1) and mobile phone connection block (X39/37) (with phone prewiring) / Voice command system control module (SBS) (N41/3) |
| 48 | 7.5 | EDW/anti-towing protection/volumetric protection control module (N26/6) and alarm signal horn with backup battery (H3/1) (with anti-theft alarm) |
| 49 | 40 | Roof control unit control module (N72/1) and front left seat heating cushion (R13/1) and front left backrest heating cushion (R13/2) and front right seat heating cushion (R13/3) and front right backrest heating cushion (R13/4) (with front seat heating) |
| 50 | 7.5 | CD player (A2/6) (with 6-CD changer) |
| 51 | 7.5 | Restraint system control module (N2/7) |
| 52 | 7.5 | Spare |
| 53 | 30 | (R3/1) / Luggage compartment power outlet (X58/1) |
| 54 | 25 | Sound system amplifier (N40/3) and Bassbox speaker (H4/17) (with sound system) |
| 55 | 10 | Front left headlight unit (E1) (with bi-xenon) |
| 56 | 10 | Front right headlight unit (E2) (with bi-xenon) |
| 57 | ' | ' |
| 58 | 25 | Trailer control module (N28/3) (with towing hitch) |
| 59 | 25 | Trailer control module (N28/3) (vehicles up to 31/05/2005) or AHV 13-pin socket (X58) (vehicles from 1/06/2005) (with towing hitch) |
| 60 | 20 | Driver seat connector block (X55/3) |
| 61 | 20 | Passenger seat connector block (X55/4) |
| 62 | 25 | Terminal 15 (2) relay (relay O) (Towing hitch / Front lights) |
| 63 | ' | ' |
| 64 | 80 | Engine / engine compartment wiring harness connector (X26/29) |
| 65 | 80 | Electric power steering (ES) control module (N68) |
| 66 | 60 | SAM control module (N10) |
| 67 | 50 | Terminal 15R (2) relay (relay A) (Luggage compartment power outlet / Front seats) |
| 68 | 60 | Radiator fan motor (M4/7) |
| 69 | 50 | / Glove box light / Front and rear wipers / Vanity mirrors / Roof control unit) |
| 70 | 60 | Terminal 15 (1) relay (relay G) (Restraint system / Washer nozzle heater / Air conditioning / Instrument cluster / Rotary light switch / Starter / Electric power steering / Towing hitch / ESP system / Reversing lights / Heater / air conditioning blower motor / Phone) |
| 71 | 150 | Auxiliary PTC heater (R22/3) |
| 72 | 60 | Terminal 30 end socket (Z4/3) (Taxi) |
Passenger compartment fuse layout
Fig. 2
RELAYS (K100)
Passenger compartment relay assignment (Fig.3)
| Relays | Assignments |
| A | Terminal 15R (2) relay |
| B | Terminal 15R relay (1) |
| C | Horn relay |
| D | Rear window heater relay |
| E | Wiper relay (speed 1/2) |
| F | Windshield wiper relay (on/off) |
| G | Terminal 15 relay (1) |
| H | ' |
| I | ' |
| K | Fuel pump relay |
| L | Engine relay, terminal 87 |
| M | Starter relay |
| N | Terminal 87F relay |
| O | Terminal 15 relay (2) (with option: xenon, mobile phone) |
The letter 'J' is not used.
15: Switched positive.
15/R: Switched positive, in ignition positions 1, 2 and 3.
Location of interior relays Fig. 3
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