Table of Contents
Most of the power circuits of the Czech station wagon and liftback are protected by fuses. Fan motors, fuel pump and other powerful current consumers are connected via relays.
Protective elements are installed in mounting blocks, which are located in the engine compartment and the passenger compartment. The information on the diagrams is relevant for the Skoda Octavia A5 models of 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013.
In the engine compartment
To access the engine compartment block, slide the latches to unlock the fuse box cover and remove the fuse box cover by lifting it up.
| Diagram | ||
|---|---|---|
 |
||
| No. | A | Decoding |
| 1 | - | Reserve |
| 2 | 5 | Steering column switches |
| 3 | 5 | Diagnostic connector |
| 4 | 30 | Hydroelectronic module ABS |
| 5 | 15 | Automatic gearbox control unit |
| 6 | 5 | Instrument cluster |
| 7 | - | Reserve |
| 8 | 15 | Audio system |
| 9 | 5 | Telephone |
| 10 | 5 | Engine control unit relay supply |
| 11 | 20 | Additional heater and ventilation control unit |
| 12 | 5 | Data bus control unit |
| 13 | 15 | The 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 | Sound signal |
| 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 |
|
| 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 gearbox control relay |
In the passenger compartment
Main fuse block
To gain access to the main cabin block, carefully pry off the cover with a screwdriver ( 1 ) and remove it ( 2 ).
| Assigment of fuses in the passenger compartment main box | ||
|---|---|---|
 |
||
| No. | A | Description |
| 1 | 10 | Diagnostic connector, engine control unit, fuel pump |
| 2 | 5 | Control unit ABS, ESP |
| 3 | 5 | Airbags |
| 4 | 5 | Heater, air conditioner, reversing light |
| 5 | 5 | Electro-corrector of headlights |
| 6 | 5 | Instrument cluster, automatic transmission control unit, electric power steering control unit, parking assistance |
| 7 | - | Empty |
| 8 | - | Empty |
| 9 | - | Empty |
| 10 | - | Empty |
| 11 | - | Empty |
| 12 | 10 | Central locking control unit |
| 13 | 10 | External lighting control unit, brake lights |
| 14 | 5 | Automatic gearbox control unit, gear selector lock |
| 15 | 7.5 | Interior lighting control unit |
| 16 | 10 | Climate control system |
| 17 | - | Optional equipment |
| 18 | 5 | Parking aid sensors |
| 19 | 5 | Trailer hitch control unit |
| 20 | 5 | Hill Start Assist |
| 21 | - | Empty |
| 22 | 40 | Climate control fan |
| 23 | 30 | Front window lifter |
| 24 | 25 | Cigarette lighter fuse Skoda Octavia A5 |
| 25 | 25, 30 |
Heated rear window. Additional heater |
| 26 | 20 | Trunk power outlet |
| 27 | 15 |
|
| 28 | - | Optional equipment |
| 29 | 10 | The engine control unit |
| 30 | 20 | Automatic gearbox control unit |
| 31 | 20 | Brake vacuum pump |
| 32 | 30 | Rear door windows |
| 33 | 25 | Electric sunroof |
| 34 | 20 | Comfort function control unit |
| 35 | 5 | Anti-theft system |
| 36 | 20 | Headlight washers |
| 37 | 20 | Heated front seats |
| 38 | 30 | Heated rear seat |
| 39 | - | Empty |
| 40 | 40 | Heating fan |
| 41 | 15 | Tailgate window wiper |
| 42 | 15 | Windscreen washer |
| 43 | 15 | Trailer coupling |
| 44 | 20 | Trailer coupling |
| 45 | 15 | Trailer coupling |
| 46 | 5 | Heated washer jets |
| 47 | 5 | Additional heater relay |
| 48 | - | Empty |
| 49 | 5 | Central light switch |
Auxilary relay block
An add-on board with relay modules is located under the steering wheel.
| Relay circuits (Type 1) | |
|---|---|
| Top board | |
 |
|
| No. | Description |
| D1 | Relay for an independent heater (for models with an independent auxiliary heater) or Relay for low heating capacity (for models with an additional resistive heater (PTC) |
| D2.1 | Horn |
| D2.2 | Fuel 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 (for models with additional resistive heater (PTC)) |
| 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 heating element (at engine lettering CAYC) |
| Bottom board | |
 |
|
| No. | Description |
| 1 | supply voltage relay (15) |
| 2 | rear window defogger relay |
| 3 | supply voltage relay (50) starter relay 1 |
| 4 |
|
| 5 | switching relay for contact X |
| Relay circuit (Type 2) | |
|---|---|
 |
|
| B4 | supply voltage (30) |
| B5 | heated rear window |
| B6 | horn |
| B7 | window washer pump 1 |
| B8 | window washer pump 2 |
| B9 | switching relay for X contact |
