Fuses and relays Skoda Octavia (A5; 2004 - 2013)

The second generation Octavia was introduced in March 2004. The model was based on the Volkswagen Group A5 (PQ35) platform. In this article we will understand in detail fuse box diagrams Skoda Octavia (codename A5) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 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

To gain access to the mounting block located in the engine compartment, slide the catches to unlock the cover and lift up to remove it.

Diagram
No.	A	Decoding
1	-	Reserve
2	5	Handlebar switches
3	5	Diagnostic connector
4	30	Hydroelectronic module ABS
5	15	Automatic transmission control unit
6	5	Instrument cluster
7	-	Reserve
8	15	Audio system
9	5	Telephone
10	5	Engine control unit relay supply
11	20	Auxiliary heater and ventilation control unit
12	5	Data bus control unit
13	15	engine control unit
14	20	Ignition
15	5, 15	Oxygen concentration sensor, fuel pump relay, glow plug relay
16	30	ABS control unit
17	15	Horn (beep)
18	30	Sound amplifier
19	30	Windshield wipers
20	-	Reserve
21	15	Oxygen concentration sensor
22	5	Clutch / Brake Pedal Switch
23	5, 10, 15	Auxiliary air pump, high-pressure fuel pump, mass air flow sensor
24	10	EGR valve
25	30	Right headlight
26	30	Left headlight
27	40	Additional air pump, preheating
28	40	Starter
29	50	Terminal supply 30
30	50	Clamp X *
R1	-	Radiator fan motor relay
R2	-	Automatic transmission control relay

In the passenger compartment

Here there are two units responsible for the protection of the vehicle's electrical circuits.

Main fuse block

To gain access to the main cabin unit, carefully pry up the cover with a screwdriver and remove it.

Diagram
No.	A	Description
1	10	Diagnostic connector, engine control unit, fuel pump
2	5	ABS, ESP control unit
3	5	Safety Airbags
4	5	Heater, air conditioner, reversing light lamp
5	5	Electric headlight corrector
6	5	Instrument cluster, automatic transmission control unit, electric power steering control unit, parking assist system
7	-	Empty
8	-	Empty
9	-	Empty
10	-	Empty
11	-	Empty
12	10	Central locking control unit
13	10	Outdoor lighting control unit, brake lights
14	5	Automatic transmission control unit, gear selector lock
15	7.5	Interior lighting control unit
16	10	Climate control system
17	-	Optional equipment
18	5	Parking assist sensors
19	5	Traction control unit
20	5	Hill start assist system
21	-	Empty
22	40	Climate control fan
23	30	Front power windows
24	25	Cigarette lighter fuse Skoda Octavia A5
25	25, 30	Rear window heater. Additional heater
26	20	Plug socket in the luggage compartment
27	15	Fuel pump relay, fuel injectors
28	-	Additional equipment
29	10	engine control unit
30	20	Automatic transmission control unit
31	20	Brake system vacuum pump
32	30	Rear power windows
33	25	Electric sunroof
34	20	Comfort function control unit
35	5	Anti-theft system
36	20	Headlight washers
37	20	Front seat heating
38	30	Rear seat heating
39	-	Empty
40	40	Heating fan
41	15	Tailgate window wiper
42	15	Windshield washer
43	15	Traction hitch
44	20	Traction hitch
45	15	Traction hitch
46	5	Heated windshield washer nozzles
47	5	Additional heater relay
48	-	Empty
49	5	Center light switch

Auxilary relay block

An add-on board with relay modules is located under the steering wheel.

Relay diagrams (Type 1)
Top board
No.	Description
D1	Independent heater relay (on models with independent auxiliary heater) or Relay for low heat output (for models with auxiliary resistance heater (RTS))
D2.1	Horn
D2.2	Fuel (Gasoline) pump relay (for BUD, CGGA, BSE, BSF, CMXA, CHGA engines) /  Additional fuel pump relay -J832- (for CLCA, CLCB, CFHF, CFHC, CEGA engines)
D3	Relay for high heat output (on models with optional resistance heater (RTS))
D3.1	Fresh air blower (for models with independent auxiliary heater)
D3.2	Additional heater fuel pump relay -J749- (on models with independent additional heater)
D4	Starter
D5.1	Wiper relay
D5.2	relay for the heating element (for motor letter designation CAYC)
Bottom board
No.	Description
1	supply voltage relay (15)
2	rear window heater relay
3	supply voltage relay (50) starter relay 1
4	gasoline pump relay (pressure building in the supply system) -(for BUD, CGGA, BSE, BSF, CMXA, CHGA engines) fuel pump relay (for diesel engines)
5	switching relay for contact X

Relay diagram (Type 2)
B4	supply voltage (30)
B5	rear window heating
B6	horn
B7	window washer pump 1
B8	window washer pump 2
B9	switching relay for X contact