Fuses and relay Ford Focus Mk1 (C170), 1998–2005

First-generation Ford Focus (European and North American models; chassis code C170) was produced from 1998 through 2005, receiving one mid-cycle facelift. Below, you will find fuse and relay box diagrams, location descriptions, and circuit assignments for the Mk1 Ford Focus. The fuse assigned to the "Cigarette lighter" is highlighted in bold.

Fuse assignments and circuit protection ratings may vary depending on the model year and target market (European vs. North American specifications).

The Ford Focus Mk1 features two primary junction boxes: one inside the passenger compartment and another in the engine compartment.

In the passenger compartment

Located on the driver’s side of the dashboard, behind the glove box or lower access cover.

Diagram
No.	Fuse Description
30	10A – Exterior lighting switch / 7.5A ABS control module
31	15A – Audio system / Radio
32	15A – Turn signals / 10A Exterior lighting switch
33	20A – Horn, power seat adjustment, sunroof / 15A Anti-theft alarm system
34	20A – Sunroof, horn
35	7.5A – Interior lighting, power exterior mirrors
36	7.5A – Electronic control modules, instrument cluster, A/C control module, alarm ('02–'04)
37	25A – Power windows (left side)
38	25A – Power windows (right side)
39	15A – Power seat adjustment / 10A Reversing lights, automatic transmission control
40	10A – Reversing lights / 25A Power windows, central locking
41	7.5A – Audio system (auxiliary / memory)
42	15A – Brake lights (stop lamps)
43	15A – Power windows, rear window wiper
44	20A – Front fog lights
45	7.5A – Air conditioning system, air recirculation flap
46	7.5A – ABS control module / 15A Cigarette lighter
47	15A – Cigarette lighter / 7.5A Parking lights (left)
48	10A – Data Link Connector (DLC / Diagnostic port) / 7.5A Parking lights (right)
49	25A – Heated rear window (defroster)
50	7.5A – Heated exterior mirrors, audio system, instrument cluster, central timer module
51	7.5A – Heated exterior mirrors
52	15A – Heated front seats
53	10A – Reversing lights, heated windshield washer nozzles
54	15A – Brake lights
55	25A – Front power windows / 20A Windshield wipers
56	20A – Windshield wipers / 25A Power side windows
57	7.5A – Side marker / position lights (right)
58	7.5A – Side marker / position lights (left) or air conditioning, blower motor
59	10A – Exterior lighting switch, electronic control module, instrument cluster
60	7.5A – Airbag control module (SRS)
61	7.5A – Electronic control modules, instrument cluster
62	7.5A – License plate lights 15A – Heated front seats
63	20A Central locking
Depending on the model year, either Fuse 46 or Fuse 47 (15A) powers the cigarette lighter socket.
R1	Starter relay
R2	Rear window wiper relay
R3	Windshield wiper relay
R4	Power socket (cigarette lighter) relay
R5	Reserved / Spare
R6	Reserved / Spare
R7	Horn relay
R8	Battery saver relay
R9	Heated rear window / heated mirrors relay
Please note: Fuse 63 is located on the back of the junction box module.

In the engine compartment

Located beneath the protective cover on the left side of the engine compartment.

Diagram
No.	Circuit / Component Protected
1	40A – Main power supply circuit
2	30A – Engine cooling fan (A/C system)
3	30A – Engine cooling fan (2.0L)
4	50A – Heated windshield
5	60A – Diesel glow plugs
6	30A / 50A – Radiator cooling fan (A/C system)
7	40A – Main power supply to vehicle electrical system
8	30A – Ignition switch, starter motor
9	20A – Engine Control Module (ECM / PCM)
10	10A – Battery charging monitor, Data Link Connector (DLC)
11	30A – Anti-lock Braking System (ABS)
12	15A – Fuel pump / high-pressure fuel pump (Diesel)
13	30A – Headlight washer system
14	10A – Daytime running lights (DRL)
15	10A – A/C compressor clutch
16	10A – Low beam headlight (left)
17	10A – Low beam headlight (right)
18	10A – Heated Oxygen Sensor (HO2S / Lambda probe)
19	10A – Daytime running lights (position lights)
20	10A – Engine management system
21	20A – Anti-lock Braking System (ABS)
22	15A – Daytime running lights (low beam)
23	20A – Auxiliary heater, anti-theft system backup power (ST170)
24	30A – Glow plugs / subwoofer amplifier (ST170)
25	15A – Daytime running lights (DRL)
26	10A – High beam headlight (left)
27	10A – High beam headlight (right)
28	10A – Heated windshield relay / auxiliary heating (Diesel)
29	30A – Radiator cooling fan (A/C system)
64	30A – Blower motor / heater fan
D1	Engine Control Module (ECM) diode
D2	Cooling fan diode
D4	Cooling system diode
No.	Relay Designation
R1	Ignition relay
R2	Glow plugs / Secondary Air Injection (SAI) pump relay
R3	Heated windshield / cooling fan relay
R4	Headlight washer relay
R5	High beam headlight relay
R6	Low beam headlight relay
R7	Fuel pump relay
R8	Engine Control Module (ECM) relay
R9	Cooling fan / pre-heating relay
R10	Glow plugs / cooling fan (Stage 2) relay
R11	A/C compressor clutch relay
R12	Daytime Running Lights (DRL) relay
R13	Front fog lights / starter relay
R14	Xenon / HID headlight relay
R15	Cooling fan relay (high speed)
R16	Cooling fan relay (low speed)