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Info guides and mods

451 Fortwo Fuse Layout

Modification Details




451 Petrol & Diesel Fuse Layout






No   Amp. Colour
1 Engine 25 A Neutral
2 Windscreen wipers 25 A Neutral
3 Window lifter motor, left and right 20 A Yellow
4 Heater blower 25 A Neutral
5 Fog lights, LED DRLs 10 A Red
6 Parking lights right, instrument lights, licence plate lights 7.5 A Brown
7 Parking lights left 7.5 A Brown
8 Engine 25 A Neutral
9 Engine 7.5 A Brown
10 Engine 15 A Blue
11 ESP 25 A Neutral
12 Switches, obd, indicators, fog tail light, transmission, light stalk, speedo 10 A Red
13 Not used empty empty
14 Intercooler fan 15 A Blue
15 Audio, subwoofer, interior light 15 A Blue
16 Electric fuel pump 15 A Blue
17 Rear window wiper (coupe only) 15 A Blue
18 ESP, power steering, airbag, speedo cluster 10 A Red
19 ECU, OBD, transmission 7.5 A Brown
20 A/C, wing mirror adjustment, washer pump, audio, SE Drive, wiper stalk 10 A Red
21 12v Power socket 15 A Blue
22 Low beam light, r. 7.5 A Brown
23 Low beam light, l. 7.5 A Brown
24 Brake lights, light sensor, light stalk 15 A Blue
25 High beam right 7.5 A Brown
26 High beam left 7.5 A Brown
27 Engine 7.5 A Brown
28 Rear window heater/engine fan (coupe only) 40 A Orange
29 Soft top (cabrio only) 30 A Green
30 Relay for automated gearbox 40 A Orange
31 Horn, central locking 20 A Yellow
32 Not used empty empty
33 Ignition/Starter motor 50 A Red
34 ESP 40 A Orange
35 Power steering 30 A Green
36 (R1) Heated mirrors - switched live 5 A Black/Blue
37 (R2) Spare - switched live _ _
38 (R3) Spare - switched live _ _
39 (R4) Spare - switched live _ _
40 (R5) Spare - permanent live _ _
41 (R6) Spare - permanent live _ _
42 (R7) Spare - permanent live _ _
43 (R8) Spare - permanent live _ _
44 (R9) Heated seats - permanent 20 A Yellow

If you find a blown fuse then ensure that you replace it with a fuse of the same rating, the above is merely a guide.

Unusual Fuse Blowing

Fuse 9

Check the wiring to the lambda sensor(s) to ensure that it's not rubbing and shorting on any metal.

Fuse 18

Check the wires coming from the seat belt clip.


451 ED (Electric Drive) Fuse Layout




 
No   Amp. Colour
1 Not used empty empty
2 Windscreen wipers 25 A Neutral
3 Window lifter motor, left and right 20 A Yellow
4 Heater blower 25 A Neutral
5 Fog lights, LED DRLs 10 A Red
6 Parking lights & Tail lights right, speedo lights, licence plate lights 7.5 A Brown
7 Parking lights & tail lights left  7.5 A Brown
8 Electric motor components, A/C 25 A Neutral
9 Electric motor components, brakes 7.5 A Brown
10 Electric motor components 15 A Blue
11 ESP 25 A Neutral
12 Switches, obd, indicators, SE drive, light stalk, heated wing mirrors, alarm, rain and light sensor, dash pods, central locking, speedo 10 A Red
13 Not used empty empty 
14 Not used empty empty
15 ED safety circuit 15 A Blue
16 Not used empty empty
17 Rear window wiper (coupe only) 15 A Blue
18 ESP, power steering, restraint system 10 A Red
19 Motor controller, transmission, stop/start, sound generator 7.5 A Brown
20 A/C, mirror adjuster, screen washer pump, stereo, heated seats,
rear driving lights, wiper stalk, dash switches
10 A Red 
21 12v Power socket 15 A Blue
22 Low beam light, r. 7.5 A Brown
23 Low beam light, l. 7.5 A Brown
24 Brake lights, fog light 15 A Blue
25 High beam right 7.5 A Brown
26 High beam left 7.5 A Brown
27 Motor components 7.5 A Brown
28 Rear window heater (coupe only)  40 A Orange
29 Soft top (cabrio only) 30 A Green
30 Transmission control unit, front radiator fan 40 A Orange
31 Horn, central locking 20 A Yellow
32 Not used empty empty
33 Ignition lock 50 A Red
34 ESP Controller 40 A Orange
35 Power steering controller 30 A Green
36 (R1) Mirror heaters 7.5 A Brown
37 (R2) Empty _ _
38 (R3) Empty _
39 (R4) Empty _ _
40 (R5) Motor components 10 A Red
41 (R6) Radio system, subwoofer, cabrio roof 15 A Blue
42 (R7) Interior lighting 5 A Light brown
43 (R8) Amplifier (stereo upgrade) 20 A Yellow
44 (R9) Seat heater controller 25 A Neutral

If you find a blown fuse then ensure that you replace it with a fuse of the same rating, the above is merely a guide.

Credits

Alex Z for sending me scans of his manual.
Google translate so I could double check my German to English.

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