Opel Vauxhall Astra K (2015 – 2022) fuse and relay

Opel Astra K represents the 5th generation of Astra which was produced in 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. Also known under the name Vauxhall Astra K and Holden Astra K. During this time, the model was restyled. In this publication you can find a description of fuses and relays of the Astra K with fuse box diagrams, their locations and photo examples of execution. Let’s highlight the cigarette lighter fuse.

Astra K

The purpose of fuses and relays may differ from those presented and depend on the year of manufacture, the level of electrical equipment and the region of delivery of your vehicle.

Passenger compartment

Inside the car, the fuse and relay box is located in the middle of the center console, behind the protective cover.


If the fuse cover has a power connector, it must be removed using an adapter and a screwdriver, which should be located in the glove compartment.

Photo example

photo 1


Diagram 1


12019-2022: Heated rear seats (only for vehicles without audible alarm)
2Climate control system, fan
3Electric driver’s seat
42016–2018: Cigarette lighter/ socket at front
2019-2022: Power passenger seat
6Front electric windows
72016-2019: ABS
8Heated steering wheel
9Body control module
10Rear electric windows
12Body control module
13Heated seats (only on vehicles without audible alarm)
14Exterior mirror
15Body control module
16Body control module
17Body control module
18Body control module
19Data link connector
20Airbag system
21Climate control system
22Central locking, rear door
23Electronic key system
24Power seat memory function
25Steering wheel with airbag system
26Ignition switch/ steering column lock
27Body control module
28USB connector
292016–2018: Not used
2019-2022: Cigarette lighter/ socket in front.
30Selector lever
31Rear window wiper
32Transmission control module
33Anti-theft alarm / Sound alarm
34Parking Assist / Side Blind Zone Alert / Infotainment System / USB Port
36Information display/instrument cluster/ CD player
37Infotainment system, radio

Depending on the year of manufacture, fuse number 29 or 4 may be responsible for the operation of the cigarette lighter.

Engine compartment

Under the hood in the engine compartment on the left side there is a main box with fuses and relays.



Diagram 2


1 – F6UB 500A • Starter M64
5 – F5UB 80A • Engine control unit K20 (LVK/LVL/LWQ/LWV)
6 – F4UB 80A • K43 Power steering control module (NJ0/NJ1)
7 – F3UB 100A • Additional electric heater E40 (C32)
8 – F2UB 80A • Cooling fan motor G10

F1UA30A • Starter relay KR27
F2UA40A • KR27C Starter gear solenoid relay
B52A Heated oxygen sensor 1 (LE1/LE2/LFE/LV7/LWC)
E41 Engine coolant thermostat heater (LE1/LE2/LWC)
K20 Engine Control Module (LV7)
M98 Intake manifold service valve actuator (LVK/LVL)
Q12 Evaporative emissions purge solenoid valve (LE1/LE2/LFE/LV7/LWC)
Q40 Turbocharger wastegate solenoid valve (LE1/LE2/LFE/LWC)
Q42 Turbocharger wastegate solenoid valve (LE1/LE2/LFE/LWC)
Q44 Engine oil pressure control solenoid valve
Q45 Piston Cooling Oil Injector Solenoid Valve (LVK/LVL/LWQ/LWV)
Q47 Exhaust gas recirculation (LVK) cooler bypass solenoid valve
Q56 Coolant pump clutch (LE1)
F4UA25A • K20 Engine Control Module
KR31 Coolant Pump Relay – Auxiliary (LWC)
M96 Active radiator air flap drive (VRI)
F6UA20A • K71 Transmission Control Module (MJA)
F7UA10A • Not used
K20 Engine Control Module (LFE/LV7/LWC)
K103 Fuel injector control module (LFE)
F9UA10A • KR29 A/C compressor clutch relay
F10UA10A • Not used
K39 Rear door control module (estate with TC2)
K171 Hands-free rear door sensor control module (station wagon with TC2)
Q51D Seat Lumbar Support Valve Assembly – Actuator (AVK)
Q51P Seat lumbar support valve assembly – passenger (AVU)
F13UA7.5A • KR31 Coolant Pump Relay – Auxiliary
F14UA5A • Not used
F15UA10A (without diesel) 15A (diesel)
B52A Heated Oxygen Sensor 1 (LVK/LVL/LWQ/LWV)
B52B Heated oxygen sensor 2
B75C Multi-function intake air sensor (without diesel engine)
B280 Automatic transmission battery solenoid valve (MNU with KL9)
F16UA  7.5A (Diesel)15A (without Diesel)
K20 Engine Control Module (Diesel/LE1/LE2/LFE/LWC)
K103 Fuel injector control module (LFE)
Q17A Fuel injector 1 (LV7)
Q17B Fuel injector 2 (LV7)
Q17C Fuel injector 3 (LV7)
Q17D Fuel injector 4 (LV7)
T8A Ignition coil 1 (LE1/LE2/LFE/LV7/LWC)
T8B Ignition Coil 2 (LE1/LE2/LFE/LV7/LWC)
T8C Ignition Coil 3 (LE1/LE2/LFE/LV7/LWC)
Ignition coil T8D 4 (LE2/LFE/LV7/LWC)
F17UA15A • Engine control unit K20 (without LV7)
F18UA5A • Not used
F19UA10A • Not used
F20UA40A • Not used
F21UA30A • Not used
F22UA50A • K17 Electronic brake control module
KR6 Rear window washer pump relay
KR11 Windshield washer pump relay
F24UA25A • Not used
F25UA30A • Fuel heater relay KR22 (LVK/LWQ/LWV)
F26UA40A • K71 Transmission control module (MJA)
F27UA40A • K39 Rear door control module (estate with TC2)
F28UA30A • Not used
R14L Rear window defroster noise filter – left (US3)
E18 Rear heater grille
F30UA7.5A • Not used
F31UA7.5A • Not used
E40 Additional electric heater (C32)
K33 HVAC control module
K111 Fuel pump drive control module (LE1/LE2/LFE/LWC/LWQ/LWV)
P43 Collision warning indicators (UEU)
Shift lever S3 (MJA)
Power transformer T19 (KL9)
F33UA10A • Do not use
F34UA15A • Horn P12
F35UA20A • Additional power socket X80C – truck (wagon)
F36UAF36UA 10A (T4A) 15A (T4L)
E4F Headlight – right high beam (T4A)
E67R Multi-function LED – right headlight (T4L)
F37UA10A • E4E Headlight – high beam left (T4A)
F38UA5A • K26 Headlight control unit (T4L)
E29LF Fog Lamp – Front Left (T3U)
E29RF Fog Lamp – Front Right (T3U)
F40UA5A • K56 Serial Data Gateway Module
E11A Fuel heater/ water in fuel sensor (diesel)
Q56 Coolant pump coupling (diesel)
M29L Headlight range control drive – left (TR6)
M29R Headlight range control drive – right (TR6)
S30 Headlight switch (TR6)
F43UA20A • KR23A Fuel pump relay (LV7/LVK/LVL/LWQ/LWV)
A10 Interior rear view mirror (DD8)
B87 Rear view camera (UVC)
K68 Trailer lighting control module (VQ9)
X80G Auxiliary Power Outlet – Instrument Panel
F45UA15A • M29L Headlight range control drive – left (T4L)
F46UA5A • P16 Instrument cluster
F47UA15A • K60 Steering column lock module (BTM)
F48UA20A • Rear wiper relay KR7
A9A Outside rearview mirror – driver (DWE/DWF)
A9B Outside rear view mirror – passenger (DWE/DWF)
F50UA15A • M29R Headlight range control drive – right (T4L)
F51UA15A • E67L Multifunction LED – left headlight (T4L)
K20 Engine Control Module
K103 Fuel injector control module (LFE)
K71 Transmission control module (MJA)
Q8 Control Solenoid Valve Assembly (M2D)
T12 Automatic Transmission Assembly (MNP/MNU)
F53UA30A • KR121 reducer control module relay
F54UA30A • M79 Wiper motor module
F55UA30A • Not used
F56UA7.5A • Not used
F57UA15A •  Not used


  • K01 – Starter relay KR27 – M64 starter
  • K02 – KR29 A/C compressor clutch relay – Q2 A/C compressor clutch
  • K03 – Engine management system ignition relay
  • K04 – Sensor supply voltage relay
  • K05 – Starter gear solenoid relay KR27C – M64 starter
  • K06 – Fuel heater relay KR22 – E11A Fuel heater/water in fuel sensor (LVK/LWQ/LWV)
  • K07 – Not used
  • K08 – Not used
  • K09 – Relay for reagent control module KR121 K115
  • K10 – Fuel pump relay KR23A – Fuel pump G12
  • K11 – Not used
  • K12 – KR49R Headlight low beam relay – right
  • K12 – KR48 High beam relay
  • K13 – KR49L Low beam relay – left
  • K14 – Main ignition relay
  • K15 – Rear heater relay KR5

The relays listed below are maintenance-free printed circuit board (PCB) relays and are located inside the unit.

K16 – Horn relay KR3
K17 – KR196B Sensor 2 Supply Voltage Relay – K115 Reductant Control Module
K18 – KR46 Front fog lamp relay
K19 – KR31 Coolant pump relay – auxiliary
K19 – KR196C Sensor 3 Supply Voltage Relay (K111 Fuel Pump Driver Control Module, B136 Exhaust Particulate Matter Sensor, B195A Nitrogen Oxide Sensor 1, B195B Nitrogen Oxide Sensor 2 (LVL)
K20 – Not used
K21 – KR6 Rear window washer pump relay
K22 – KR11 Windshield washer pump relay
K23 – KR7 Rear wiper relay

The items listed below are diagnostic test points for the relay on the printed circuit board.

TP19-1 – Coolant pump relay KR31 – auxiliary
TP19-2 – Coolant pump relay KR31 – auxiliary
TP21 – Rear window washer pump relay KR6
TP22 – KR11 Windshield washer pump relay
TP23 – Rear wiper relay KR7

Luggage compartment

In the trunk, on the left side there is another fuse box.

location 2


Diagram Astra K


22016-2018: DC/AC inverter
3Trailer module
42016-2018: Power passenger seat
62016-2018: Long-range warning module
92016-2018: Heated rear seats (on vehicles without audible alarms)
102016-2019: Service
12Heated front seats (on vehicles with audible alarms)
13Rear seat heating (on vehicles with audible alarm)
15Seat ventilation
16Trailer socket
17Trailer socket
21Power folding rear seats.
22Electric rear door


If you know how to make the material better, write in the comments.

Comments 1

  • I have a 2018 diesel Astra estate. The fuse box which is supposed to be in the luggage compartment is not there. Would you be able to suggest any other places it could be located.
    I am trying to stop the “Service vehicle soon” message to stop. It’s been serviced, but it won’t cancel.

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