Smart Roadster (2003 – 2005) – fuse box diagram

Year of production: 2003, 2004, 2005

Fuse box, front

№	A	Consumers
1	25	Starter
2	20	Windscreen wipers, washer pump
3	20	Heater blower, seat heater
4	30	Power windows, L. & R.
5	7.5	Light switch
6	7.5	Parking lights/tail lights, R.
7	7.5	Parking lights/tail lights, L.
8	20	Terminal 87/3 master relay (engine)
9	10	Terminal 87/2 master relay (engine)
10	15	Terminal 87/1 master relay (engine)
11	7.5	Instrument cluster, safety cluster, OBD, Horn (only with leather sport steering wheel with steering wheel rocker switch system)
12	15	Radio CD, interior light
13	15	Fog lamps
14	25	ESP valves
15	15	Charge air cooler, Air conditioning compressor
16	10	Electric fuel pump
17	15	Rear window wiper
18	7.5	Airbag triggering device, ESP
19	7.5	Mirror adjustment
20	15	Radio, CD, instrument cluster, tachometer, OBD, backup lamp, CD changer
21	15	Power socket, Cigarette lighter
22	7.5	Low beam light, R.
23	7.5	Low beam light, L.
24	7.5	High beam light, R.
25	7.5	High beam light, L./combined light
26	15	Brake light
27	7.5	Engine control unit
28	30	Rear window heater/engine fan
29	30	Soft top
30	40	Manual gearbox
31	30	Horn, central locking, rear lid remote unlocking
36	–	Backup fuse 15
37	15	Backup fuse 15 (W450, glass sliding roof)
38	–	Backup fuse 15
39	–	Backup fuse 15
40	–	Backup fuse 30
41	–	Backup fuse 30
42	–	Backup fuse 30
43	25	Backup fuse 30
44	25	Backup fuse 30, seat heater

Fuse box, rear

№	A	Consumers
32	30	Secondary air injection pump (emission control)
33	50	Ignition switch
34	50	ESP control unit
35	30	Steering assist control unit

Retaining frame with plug positions for relay

No.	Switched function
A	Wiper system relay
B	Fog lamp relay
C	Left heated seat control unit
D	Right heated seat control unit

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.