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Volkswagen Polo (9N; 2002-2009) fuses and relays

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In this article, we consider the fourth-generation Volkswagen Polo (mk4/9N), produced from 2002 to 2009. Here you will find fuse box diagrams of Volkswagen Polo 2002, 2003, 2004, 2005, 2006, 2007, 2008, and 2009, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout VW Polo mk4 (2002-2009)

Passenger Compartment Fuse Box

Fuse Box Location

The fuse panel is located behind an access panel on driver’s side edge of the instrument panel.

Fuse Box Diagram

Assignment of the fuses in the instrument panel
AmpsFunction/component
110ARear window wiper motor
25ALicence plate light
35ARear left fog light bulb
Trailer socket, rear fog light
45ACruise control system switch
Clutch pedal switch
Brake pedal switch
Radiator fan relay
Fuel pump control unit
55AEngine control unit
Exhaust gas recirculation
65AHeadlight range control regulator
77.5A/5A2002-2004:
Exhaust gas recirculation
Air-mass meter
Oil level sensor
Electrohydraulic steering
Crankcase breather heater element
2005-2009:
Oil level and oil temperature sender
Power steering control unit
Crankcase breather heater element
85AOnboard power supply control unit
Mirror heating
910A2002-2004 (FSI):
Lambda probe
Crankcase heater
Pressure regulating valve
105AMobile telephone operating electronics control unit (2006-2009)
Control unit with display for radio and navigation system
Onboard power supply control unit
Radio
115AMirror adjustment switch
Folding exterior mirror control unit
125ARight tail light bulb
Right side light bulb
135ALeft side light bulb
Left tail light bulb
1410ACrankcase breather heater
Secondary air pump relay
Exhaust gas recirculation
Intake manifold flap
Hall sender
1510AMulti-function switch
Automatic gearbox control unit
1610Alntermittent wiper switch
Onboard power supply control unit
Rear window wiper motor
Windscreen and rear window washer pump
175AEngine control unit
185AClimatic, Climatronic, radiator fan control unit, navigation, circulation pump, illumination of functions, interior monitor sensor, mirror
1910AReversing light switch
Parking aid control unit
Left washer jet heater element
Right washer jet heater element
Selector lever illumination (2002-2004)
205AControl unit in dash panel insert
2110ARight main beam bulb
2210ALeft main beam bulb
2310ATraction control system switch
TCS and ESP button
Tyre pressure monitor display button
Steering angle sender, only models with ESP
ABS control unit
2410A/15A2002-2006:
Onboard supply control unit, tank filler flap locking motor
Onboard supply control unit, central locking motor in rear lid
2006-2009:
Heated driver seat regulator
Heated front passenger seat regulator
Heated front seats control unit
2510AInjectors
Camshaft adjuster
Thermostat heater
Fuel purging valve
2610A2002-2004: Brake lights
2005-2009: Coolant pump relay (only BJX)
275ASteering angle sender
Control unit in dash panel insert
2810AOnboard supply control unit, relay for interior lights
Door warning lamp relay
295AClimatronic control unit
Air conditioning system control unit
Mobile telephone operating electronics control unit
16-pin connector, diagnostics connection
305AOnboard power supply control unit, shift lock, rain sensor
3125ADriver door control unit
Driver side window regulator motor
3215A2002-2004:
Seat heating
2005-2009:
Brake light switch
Brake light suppression relay
3315AAlarm horn
3415A/20A2002-2004:
Socket in luggage compartment (Variant)
2005-2006:
12V socket
2006-2009:
Cigarette lighter
12V socket
Blocking diode
3520ASliding sunroof adjustment control unit
3625AFresh air blower switch
Fresh air blower control unit
3715A/20AIgnition transformer
3825ARear left door control unit
3925AFront passenger side door control unit
4010A/20A/30AEngine control unit
4115AFuel pump
4215A/20ANOx regulator, Lambda probe, exhaust gas cooling
4315ARight headlight dipped beam bulb
Right headlight range control motor
4415ALeft fog light bulb
Right fog light bulb
4515AEngine control unit
4620AOnboard power supply control unit
Automatic intermittent wash and wipe relay
4720A/30AOnboard power supply control unit
Heated rear window
4815AOnboard power supply control unit, Turn signals
4910A/15A2002-2006:
Cigarette lighter
2006-2009:
Onboard supply control unit, tank filler flap locking motor
Onboard supply control unit, central locking motor in rear lid
5015A2002-2004:
Central locking
2005-2009:
Anti-theft alarm ultrasonic sensor
Comfort system central control unit
5115AControl unit with display for radio and navigation system
Dipped headlight control unit, on/off for Coming home system
Radio
5220AHeadlight washer system relay
Onboard supply control unit
Treble tone horn, Bass tone horn
5325ARear right door control unit
5415ALeft headlight dipped beam bulb
Headlight range control motor

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Relay panel

The relay panel is located under the driver’s side of the instrument panel.

AmpsDescription
12002-2004:
Driving school mode relay
2005-2009:
Secondary air pump relay (engine code BJX)
Folding exterior mirror control unit
22005-2009:
Folding exterior mirror control unit
Driving school mode relay
3Glow plug relay (Diesel engines)
Motronic current supply relay (2002-2007)
4Fuel pump relay
52002-2004:
Warning lamps relay
2005-2007:
Door warning lamps relay
Brake light suppression relay
6Headlight washer system relay
72002-2004: Starter inhibitor relay
2005-2009: Dipped headlight control unit, on/off (coming home system)
8Low heat output relay (Diesel engines)
Coolant pump relay (2005-2007, engine code BJX)
9High heat output relay (Diesel engines)
10Motronic current supply relay
Radiator fan relay (engine codes ASZ, BLT)
Current supply relay (2002-2004)
11X-contact relief relay
12Fuel supply relay
13Fuel pump relay (Petrol engines)
1440ADiesel engines fuses:
Heater element fuse 1
Heater element fuse 2
Heater element fuse 3
152002-2004:
Diesel direct injection system relay
2005-2009:
Terminal 30 voltage supply relay (Diesel engines)
Motronic current supply relay (Petrol engines, not engine codes BUD, BTS)
Fuel pump relay (2005-2007, engine codes BMD, BME)
F110ATrailer socket
F215AHeated driver seat regulator
Heated front passenger seat regulator
Heated driver seat control unit
Heated front passenger seat control unit
F310A/5ADriving school mode
Footwell light switch
Warning buzzer switch
Control unit in dash panel insert (South Africa, from 2006, 5A)
F410ADriving school mode
12V socket

Engine Compartment Fuse Box

Fuse Box Location

The main fuse box located on top of the battery in the engine compartment.

Fuse Box Diagram

Version 1

AmpsFunction/component
S162175AAlternator
S163110AFuse holder B
S16450APower steering control unit
S17650AGlow plug activation control unit
Engine glow plugs
Secondary air pump motor
S17740ARadiator fan (models with air conditioning system or Climatronic)
S17840AABS control unit
S17925AABS control unit
S18030ARadiator fan
S267--
S2685AOnboard power supply control unit
S2695ARadiator fan control unit
S270--
S2715AAutomatic gearbox control unit
S272--
S273--
S274--
Version 2

AmpsFunction/component
S162175AAlternator
S163110AFuse holder B
S16440ARadiator fan (models with air conditioning system or Climatronic)
S17640AABS control unit
S17750APower steering control unit
S17850AGlow plug activation control unit
Engine glow plugs
Secondary air pump motor
S17925AABS control unit
S18030ARadiator fan
S2675ARadiator fan control unit
S26810AABS control unit
S2695AOnboard power supply control unit
S2705ADiesel direct injection system control unit (models with engine code BMT)

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