Fuses and relays Hyundai i20 (PB / GB; 2008 - 2021)

The i20 is a supermini hatchback produced by Hyundai since 2008. The model made its debut at the Paris Motor Show in October 2008 and is positioned between the i10 and i30 models. In this article we will understand in detail fuse box diagrams Hyundai i20 (first and second generation; PB / GB index) 2008, 2009, 2009, 2010, 2011, 2011, 2012, 2013, 2014, 2015, 2015, 2016, 2017, 2017, 2018, 2019, 2020, 2021 years of manufacture.

Here you will find the locations and photos of the mounting blocks. Also, we will separately mark the fuses responsible for the cigarette lighter and the fuel pump.

In the engine compartment

Location of underhood units.

Main fuse box

Located on the left side of the engine compartment, next to the battery.

Type 1

General view.

Name  Description
BATT 2 Instrument panel junction box (relay for electric drive glass lifters, fuses (SAFETY P / W - 15 A, HAZARD - 15 A))
BATT 1 Instrument Panel Junction Box (Tail Lamp Relays, Fuses (S / ROOF - 20 A, FOLDING - 10 A, DR LOCK - 20 A, STOP LP - 15 A, V / A HORN - 15 A, RR FOG LP - 10 A , FRT FOG LP - 10 A, power connector (ROOM - 10 A, AUDIO - 20 A))
C / FAN High speed cooling fan relay, low speed cooling fan relay
MAIN Alternator, fuses (ABS 1 - 40 A. ABS 2 - 40 A, RR HTD - 40 A, BLOWER - 40 A, MDPS - 80 A, A / CON 1 - 10 A)
ABS2 Multipurpose test connector, anti-lock brake system (ABS) control unit, electronic stability control (ESP) control unit
ABS 1 Multipurpose test connector, anti-lock brake system (ABS) control unit, electronic stability control (ESP) control unit
RR HTD Rear heating relay
BLOWER Fan relay
MDPS Electronic stability control (ESP) control unit
IGN 2 Ignition
ECU A Engine control module (ECM) (with manual transmission), transmission control module (PCM) (with automatic transmission), engine control relay (main relay)
F / PUMP Hyundai i20 fuel pump fuse
IGN 1 Egnition lock
HORN Horn relay
SNSR 1 Camshaft position sensor, fuel vapor storage purge control solenoid valve, oxygen sensor (upper, lower), immobilizer control unit, cooling fan low speed relay, cooling fan high speed relay
ECU B Engine Control Module (ECM) (with manual transmission), Transmission Control Module (PCM) (with automatic transmission)
DRL Ground (body electronic control module (BCM))
ECU 1 Engine Control Module (ECM) (with manual transmission), Transmission Control Module (PCM) (with automatic transmission)
INJ Injectors 1-4, idle speed control actuator, air conditioning relay, oil flow control valve (GAMMA)
A / CON2 Air conditioner control unit
A / CON 1 Air conditioner relay
Type 2

General view.

Decrtiption Amps
1 Empty -
2 Empty -
3 Ignition switch 50
4 Engine control relay 30
5 Fuel filter heater relay 30
6 Ignition switch 40
7 Horn relay 10
8 Empty -
9 Empty -
10 Oxygen sensor, Brake light switch, Air heater, Cooling fan, low speed relay / Cooling fan, high speed relay 10
11 Empty -
12 Ground 10
13 Fuel pressure regulator 10
14 Engine control unit 20
15 EGR, immobilizer control unit, engine compartment fuse and relay box, relays R1, R4, air conditioning relay, variable geometry turbine (VGT), camshaft position sensor 15
16 Empty -
17 Air-conditioning control unit 10
18 Empty -
19 Empty -
20 Air-conditioning relay 10
21 Fuse and relay box in passenger compartment, relay R2 and fuses 21, 22 50
22 Fuse and relay box in passenger compartment, relay R8 and  fuses 2 – 7, 25, 33, 34    50
23 Cooling fan, high-speed relay / Cooling fan, low-speed relay 30
24 Fuse and relay box in engine compartment, fuses 20, 25 – 29, 34, Generator 125
25 ESP control unit, Multi-purpose check connector, ABS control unit 40
26 ESP control unit, Multi-purpose check connector, ABS control unit 40
27 Rear heater relay 40
28 Blower relay 40
29 EPS control unit 80
30 Spare 25
31 Spare 20
32 Spare 15
33 Spare 10
34 Fuse and relay box No. 1 in engine compartment, relays R1 – R4 150
R1 Empty
R2 Blower relay
R3 Fuel filter heater
R4 Engine control unit
R5 Daylight running system relay
R6 Air-conditioning relay
R7 Starter relay
R8 Security alarm system relay
R9 Horn relay
R10 Cooling fan, low-speed relay
R11 Cooling fan, high-speed relay

Additional block

Fits on the right side of the engine compartment on i20 diesel models.


  • R1 - Glow plug relay;
  • R2 - PTC, relay 3;
  • R3 - PTC, relay 2;
  • R4 - PTC, relay 1;
  • 1 - PTC relay 3 50A;
  • 2 - PTC relay 2 50A;
  • 3 - PTC relay 1 50A;
  • 4 - Glow plug relay / Air heating 80A.

In the passenger compartment

Located at the bottom of the dashboard.

Type 1

First version of the unit.

Name Descripion
P / WDW -LH Power window main switch, driver's door power window automatic interlock assembly, right rear door glass control switch, front passenger door glass control switch (for right-hand drive vehicles)
S / HTD Front passenger seat heating switch, driver's seat heating switch
RR WIPER Rear window wiper motor, multifunction switch (wiper control switch)
H / LP RH Headlight right, dashboard (headlights on)
IGN 2 Headlight leveling switch, cabin temperature sensor, electronic body control module (BCM), air conditioning control module, sunroof control module, left/right headlights, engine compartment fuse and relay box (fuel filter heater relay (FFHS), daytime running light relay (DRL), blower relay), diesel fuse/relay box (heater relay PTC 2, heater relay PTC 3)
PCU Fuel filter warning sensor, air flow sensor, engine control module (ECM) (with manual transmission), transmission control module (PCM) (with automatic transmission)
STOP LP Brake Light Switch, Data Link Connector (DLC), Power Window Relay
A / BAG Seat Belt Not Fastened Sensor Module, SRS Control Module
HAZARD Alarm switch, alarm relay
SAFETY P / W Automatic blocking block of the electric drive glass of the driver's door lift
CLUSTER On-board computer, instrument panel (backlight), body electronic control module (BCM)
TCU Overdrive switch, pulse generator “A”, pulse generator “B”, vehicle speed sensor
IGN1 Alternator (KAPPA), Electric Power Steering (EPS) Control Unit, Tire Pressure Monitor
ABS Electronic stability system (ESP) switch, steering angle sensor, anti-lock brake system (ABS) control unit, ESP control unit, yaw angle sensor, engine compartment fuse and relay box (multi-purpose test connector)
IGN COIL Ignition coil (KAPPA), ignition coils Nos. 1 - 4 (GAMMA), capacitor (GAMMA)
B / UP LP Transmission mode switch (GAMMA), reversing lamp switch
A / BAG IND Dashboard (airbag lighting)
T / SIG LP Hazard switch
TAIL LP LH Daytime running light relay (DRL), license plate light, left rear combination light, left headlight
TAIL LP RH Headlight right, right rear combination lamp, lighting
ACC Electric drive of outside rear-view mirrors, audio system, on-board computer
C / LIGHT Hyundai i20 cigarette lighter fuse
RR FOG LP Rear fog lamp relay
B / A HORN Anti-theft alarm relay
DR LOCK Tailgate unlock relay, door lock / unlock relay, full door lock relay
FRT FOG LP Front fog lamp relay
FOLDING Power outside rearview mirror control switch
S / ROOF Sunroof control unit
START Engine Control Module (ECM) (for diesel vehicles), engine compartment fuse box and relays (starter relay, anti-theft alarm relay)

Type 2

General view of the Hyundai i20 interior fuse box.

Description Amps
R1 Rear heater relay
R2 Power window relay
R3 Front fog light relay
R4 Rear fog light relay
R5 Empty
R6 Door unlock relay / Door lock relay
R7 Tailgate unlocking relay / Tailgate lock relay
R8 Tail light relay
R9 Daylight running system relay
R10 Hazard warning light relay
1 Fuse and relay box in engine compartment (relays R7, R8), Engine control unit or not used 10
2 Sunroof control unit 20
3 Folding/unfolding function of exterior mirrors 10
4 Front fog light relay 10
5 Door lock relay, door lock relay, door unlock relay, tailgate unlock relay 20
6 Relay of the alarm system 15
7 Rear fog light relay 10
8 Not used 25
9 Cigarette lighter fuse 15
10 Audio, Trip computer, Electric mirrors 10
11 Lighting, right headlamp, rear combination lamp(s) 10
12 License plate light, Rear left combination light, Left headlight, Daylight running system relay 10
13 Hazard warning switch 10
14 Instrument panel 10
15 Rear light switch, transmission range selector switch 10
16 Condenser, Ignition coils 1 – 4 15
17 Fuse and relay box in engine compartment (diagnostic connector), ESP control unit, Electronic stability program (ESP) switch, Steering angle sensor, Yaw rate sensor, ABS control unit 10
18 EPS Control Unit, Tire Pressure Monitoring System Control Unit, Generator 10
19 Pulse generator, Vehicle speed sensor, Overdrive main switch 10
20 Instrument panel, trip computer, body control module (BCM) 10
21 Driver’s power window 15
22 Hazard warning light relay, Hazard warning switch 15
23 SRS control unit, Seat belt switch 10
24 Not used 25
25 Data link connector, Power window relay, Brake light switch 15
26 Mass air flow meter, engine control unit, powertrain control module (PCM), fuel filter warning 10
27 Fuse box No. 1 in engine compartment, relays R2, R3, Fuse and relay box in engine compartment, relays R2, R3, R5, Air-conditioning control unit, Headlights, Sunroof control unit, Body control unit (BCM), In-car temperature sensor, Headlight levelling switch 10
28 Instrument panel, Right headlight 10
29 Multifunction switch, Rear wiper motor 15
30 Heated front seat(s) switch 15
31 Driver's power window, Rear left power window switch, Passenger power window switch (right-hand drive), Power windows, main switch 25
32 Driver’s power window, Switch, rear right power window(s), Passenger’s power window switch (left-hand drive), Power windows, main switch 25
33 Open door, instrument panel, trip computer, air conditioner control unit, luggage compartment lighting, overhead console, front interior lamps, interior lighting, rear heater relay, tire pressure monitoring system control unit, body control module (BCM) 10
34 Audio 20
35 Left headlight 10
36 Powertrain control unit (PCM), Air-conditioning control unit, Electric mirrors, Engine control unit 10
37 Multifunction switch, Front wiper motor 25
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