Skoda Octavia a7 fuse and relay

The third generation, Skoda Octavia a7 was produced in 2013, 2014, 2015, 2016 and 2017. After that, the car underwent restyling and with an updated exterior was produced in 2018, 2019, 2020, 2021 and to the present. As in previous generations, the model is available in two body styles: a liftback and a station wagon with gasoline and diesel engines. In this publication, we will show where the boxes with fuses and relays are located in the Skoda Octavia A7 car, their photographs and diagrams with an assignment of the purpose of the elements. Separately, we highlight the fuses for the cigarette lighter and washer.

octavia a7

The purpose of the fuses and their number may differ from the one presented and depend on the equipment and year of manufacture of the car.

Passenger compartment

It is located under the dashboard behind the glove compartment. To access, bend the sides slightly and pull towards you.

access to the fuse box

Photo of the box in the cabin of the Skoda Octavia A7

block in the cabin Skoda octavia a7

Diagram

block diagram in the cabin a7

Designation. Type 1.

F1Not used
F2Not used
F3Not used
F4Not used
F55A data bus interface diagnostics
F65A sensor of the device for monitoring the internal space of the vehicle-, tilt sensor of the vehicle
F710A rear window defogger relay, heater control unit, air conditioner control unit-, climate control system control unit, preselector sensor control unit, heated front glass relay, independent heater radio
F810A plug connection, 16-pin on socket for diagnostic installation, air humidity sensor, air humidity, rain and light recognition sensor, headlight switch
F915A four-wheel drive control unit
F1010A multimedia system control unit
F1125A rear seat heating control unit
F1220A information electronics control unit
F1325A front left seat belt switch control unit
F1430A fresh air blower control unit
F1510A electronic steering column lock control unit
F167.5A mobile phone preparation / 5A  two way mobile radio signal booster
F175A control unit in combined instruments
F18Reserve
F197.5A access interface and launch system
F205A 7 Steering column electronics control unit
F21Reserve
F2230A rear hood control unit
F2340A vehicle electrical system control unit
F2430A convertible roof control unit, roof blind control unit
F2530A door control unit, driver’s side, rear left power window motor
F2625A vehicle electrical system control unit (for vehicles with seat heating)
F2730A digital audio control unit
F2820A Trailer Recognition Control Unit
F29Reserve
F30Reserve
F3140A vehicle electrical system control unit
F327.5A parking assistant control unit, park assistant control unit
F335A Airbag off warning light, front passenger side, Airbag control unit
F347.5A headlight switch -E1-, reversing light switch -F4-, pressure sensor in the cooling circuit, rear seat heating control unit, auto-dimming interior rearview mirror -, inverter with socket, 12 V-230 V-, preparation for mobile phone installation, load relay, sound control unit in hard material
F3535A plug connection, 16-pin, on the diagnostic socket headlight range control, left headlight range control servomotor, right headlight range control servomotor, cornering light control unit and headlight range control, driver assist systems front camera, distance adjustment control unit
F3610A Right headlight
F3710A Left headlight
F3820A Trailer Recognition Control Unit
F3930A door control unit, front passenger side, rear right power window motor
F4020A Cigarette lighter fuse octavia a7, 12 V socket
F41Reserve
F4240A vehicle electrical system control unit
F4340A vehicle electrical system control unit
F4430A Trailer Recognition Control Unit
F4530A driver’s seat controller thermal fuse
F4630A inverter with socket, 12V-230V
F4715A rear window wiper motor
F48Reserve
F495A starter relay 1, starter relay 2, clutch pedal position sensor
F50Reserve
F5125A front right seat belt tensioner control unit
F52Reserve
F5330A heated rear window

The fuse number 40 at 20A is responsible for the cigarette lighter in the cabin and in the luggage compartment.

Relay

  • Rel 1 – Supply relay connector 15
  • Rel 2 – Rear window defogger relay
  • Rel 3 – Load relay

Designation. Type 2. Restyling.

  1. Not used
  2. Not used
  3. Not used
  4. Heated steering wheel
  5. Data bus
  6. Alarm sensor
  7. Climate control, heater, remote control receiver for autonomous heater, automatic transmission, rear window heating relay, ignition key removal lock (vehicles with automatic transmission)
  8. Light switch, rain sensor, diagnostic socket, decorative lighting, headlight control unit
  9. Four-wheel drive
  10. Infotainment display
  11. Lighting on the left
  12. Infotainment system
  13. Driver’s seat belt pretensioner
  14. Air conditioner and heater fan
  15. Electric steering column adjustment
  16. Phonebox, wireless phone charging
  17. Instrument cluster, emergency call
  18. Rear View Camera
  19. KESSY system
  20. Understeering’s shifter
  21. Adaptive dampers
  22. Trailer coupling
  23. Lift-and-slide sunroof
  24. Light on the right
  25. Central locking: front left door, power windows on the left, left outside rearview mirror: heating, mirror folding function, mirror element adjustment
  26. Heated front seats
  27. Interior lighting
  28. Trailer coupling
  29. SCR system (AdBlue®)
  30. Heated rear seats
  31. Not used
  32. Park assist system, park assist steering
  33. Airbag, hazard warning light switch
  34. ASR, ESC, tire pressure monitoring system, air conditioning, reversing light switch, auto-dimming mirrors, START-STOP system, heated rear seats, simposer
  35. Headlight range control, diagnostic connector, sensor (camera) behind the windshield, radar sensor
  36. Right headlight
  37. Left headlight
  38. Trailer coupling
  39. Central locking: front right door, power windows on the right, right outside rearview mirror: heating, mirror folding function, mirror element adjustment
  40. 12 V sockets (cigarette lighter)
  41. Front passenger seat belt pretensioner
  42. Central locking: rear doors, headlight washer, glass washer
  43. Audio amplifier
  44. Trailer coupling
  45. Electric seat adjustment
  46. 230 V sockets
  47. Rear window wiper
  48. Blind Spot Assistant
  49. Engine start, clutch pedal switch
  50. Opening the boot lid
  51. SCR system (AdBlue®)
  52. USB socket
  53. Heated rear window

In this embodiment, fuse number 40 is also responsible for the cigarette lighter, and 42 for the washer.

Engine compartment

Located on the left side of the engine compartment and covered with a protective cover, which is attached with 2 clips on the sides.

fuse box under the hood octavia a7

Photo for example

photo of the unit under the hood

Diagram

block diagram under the hood

FS – high power fuse block

Designation. Type 1.

F120A / 40A device control unit (automatic gearbox with automatic distance adjustment)
F240A ABS control unit
F320A / 30A Engine control unit
F45A / 10A motor electronics, low heat performance relay
F510A ignition off relay, engine electronics
F65A brake pedal switch
F75A coolant shut-off valve, gearbox coolant valve (for engine code CJSA, CJSB, SNNV) / 10A engine electronics (for engine code CJZB, CJZA, SIRA, CLHB, CLHA, CRVC, CKFC, CUPA)
F810A lambda probe, lambda probe after catalytic converter (for engine code CJZB, CJZA, CLHB, CLHA, CKFC, CUPA) / 15A lambda probe -G39-, lambda probe after catalytic converter -G130- (for engine code SIRA, CJSA , CJSB, STNV)
F95A control unit for temporary automatic glow plug -L 79-, heating resistor for engine oil sump ventilation -N79- (for diesel engines) / 10A Engine electronics (for engine codes CJSA, CJSB, СННВ) / 20A ignition (for engine codes CJZB, CJZA , SIRA)
F1015A fuel pump relay (for petrol engines) / 20A fuel pump control unit (for diesel engines)
F1140A heating element of additional air heater
F1240A heating element, auxiliary air heater
F1315A / 30A mechatronics gearbox with dual clutch gearbox
F1430A relay for heated windshield skoda oktavia a7
F1520A high pitched beep relay, high pitched beep, low tone beep
F1620A ignition off relay
F177.5A main relay, engine control unit, ABS control unit
F185A diagnostics of the data bus interface (for vehicles without independent heating without start-stop system), battery control and monitoring unit (for vehicles with independent insulation with start-stop system)
F1930A wiper motor control unit
F2010A anti-theft alarm beep
F2120A ABS device control unit
F225A engine control unit
F2330A starter
F2440A heating element of additional air heater
F25–
F26–
F27–
F28–
F29–
F30–
F3115A brake vacuum pump
F32–
F33–
F3430A windshield heating relay 2
F35–
F36–
F3720A Additional heater control unit -J364-
F38–

Relay

  • Rel 1 – Start relay 1
  • Rel 2 – Start relay 2
  • Rel 3 – Horn relay
  • Rel 4 – Relay for greater heat performance
  • Rel 5 – Main relay

Designation. Type 2.

  1. ESC, ABS, parking brake
  2. ESC, ABS
  3. Engine management system
  4. Radiator fan, oil temperature sensor, air mass meter, fuel pressure regulator, electric auxiliary heater, oil pressure regulator, exhaust gas recirculation valve, pre-glow system, SCR (AdBlue®)
  5. Ignition, CNG relay coil, injectors, fuel metering valve
  6. Brake pressure sensor
  7. Coolant pump, radiator louver, oil pressure regulator, gearbox oil pressure regulator,
    crankcase ventilation heater
  8. The Lambda probe
  9. Ignition, exhaust flap
  10. Fuel pump, ignition
  11. Additional electric heater
  12. Additional electric heater
  13. Heated Windshield – Left
  14. Heated windshield – right
  15. Sound signal
  16. Ignition, fuel pump, CNG relay
  17. ABS, ESC, engine control unit, heated windscreen relay
  18. Data bus, battery data module
  19. Windshield wiper
  20. Anti-theft alarm
  21. Automatic transmission
  22. Engine management system
  23. Starter
  24. Additional electric heater
  25. Reserve
  26. Reserve
  27. Reserve
  28. Reserve
  29. Reserve
  30. Reserve
  31. Brake vacuum pump
  32. Not used
  33. Oil pump automatic transmission
  34. Front axle inter-wheel differential
  35. Not used
  36. Not used
  37. Heater
  38. Not used

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