Fuses and relays Hyundai i20 (PB/GB), 2009 - 2021

The Hyundai i20 subcompact hatchback has been produced from 2008 to the present in 2 generations. The first generation was produced in 2009, 2010, 2011, 2012, 2013 and 2014. During this time, the model has been restyled. Since 2015, the 2nd generation of the car has been on sale. In this material, you will find a description of the fuses and relays of the 1st & 2nd generation with block diagrams and their locations. Note the cigarette lighter fuse.

The locations of the blocks for the 1st and 2nd generation are the same. There may be differences in the design and purpose of the elements of the fuse boxes and relays Check with your diagrams on the back of the protective cover.

In the passenger compartment

Located at the bottom of the dashboard.

General view.


Type 1

Type 2
Name Descripion
P / WDW -LH Main switch for electric glass lifts, automatic blocking unit for electric drive glass of the driver's door, glass control switch for the right rear door, glass control switch for the front passenger door (for right-hand drive vehicles)
S / HTD Front passenger seat heating switch, driver's seat heating switch
RR WIPER Rear window wiper motor, multi-function switch (wiper control switch)
H / LP RH Headlight right, dashboard (headlights on)
IGN 2 Headlamp leveling switch, interior temperature sensor, body electronic control module (BCM), air conditioning control module, sunroof control module, left / right headlights, fuse box and engine compartment relay (fuel filter heating relay (FFHS ), Daytime Running Light Relay (DRL), Blower Relay), Diesel Fuse / Relay Box (PTC 2 Heater Relay, PTC 3 Heater Relay)
PCU Fuel filter warning sensor, air flow sensor, engine control module (ECM) (with manual transmission), powertrain 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 Program (ESP) switch, steering angle sensor, anti-lock braking system (ABS) control unit, ESP control unit, yaw rate sensor, engine compartment fuse and relay box (multipurpose 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 lamp, left rear combination lamp, 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 Cigarette lighter
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 vehicles with diesel engine), fuse box and engine compartment relay (starter relay, anti-theft alarm relay)

The cigarette lighter fuse in the diagram is designated as C / LIGHT or POWER OUTLET.

In the engine compartment

Main fuse box

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


Type 1

Type 2
Name  Description
WATT 2 Instrument panel junction box (relay for electric drive glass lifters, fuses (SAFETY P / W - 15 A, HAZARD - 15 A))
WATT 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 unit (ECM) (with manual transmission), transmission control unit (PCM) (with automatic transmission), engine control relay (main relay)
F / PUMP Fuel pump relay
IGN 1 Egnition lock
HORN Horn relay
SNSR 1 Camshaft position sensor, fuel vapor storage purge control solenoid valve, oxygen sensor (up, downstream), immobilizer control unit, low speed cooling fan relay, high speed cooling fan relay
ECU B Engine control unit (ECM) (with manual transmission), transmission control unit (PCM) (with automatic transmission)
DRL Grounding (Body Electronic Systems (BCM) Control Unit)
ECU 1 Engine control unit (ECM) (with manual transmission), transmission control unit (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

Additional block

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

Here you can find elements responsible for the operation of the engine, such as:
- GLOW - Glow plug relay, air heater relay
- PTC - Additional heater relay

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