2011 Vauxhall Astra radio, indicator noise, windscreen wash & seatbelt noise no longer work after a jump start.

Would first make sure all fuses are okay a sudden jump start on a dead battery can sometimes blow fuses

You have more than one fuse boxes in different locations .I would check all relevant fuses first .

Vauxhall Astra 6th Generation (Astra J) – (2010 – 2012) – fuse box diagram
Year of production: 2010, 2011, 2012

Engine compartment fuse box
Insert a screwdriver into the opening as far as it will go and tilt it sideways. Open the cover upwards and remove. The fuse box has two different fuse assignments depending on the load compartment fuse box variant,

Fuse assignments in conjunction with load compartment fuse box version A
Opel Astra H - bezpieczniki - komora silnika
Vauxhall Astra (Astra J) – fuse box -engine compartment
Number Circuit
1 ABS
2 ABS
3 3 Interior fan climate control system
4 Interior fan, heating, air conditioning system
5 Radiator fan
6 Radiator fan
7 Central locking system
8 Windscreen washer system, tailgate
9 Heated rear window, heated exterior mirror
10 Diagnostics plug
11 Instruments
12 Mobile telephone, Infotainment system, display
13 Courtesy light
14 Windscreen wiper
15 Windscreen wiper
16 Horn, ABS, brake light switch, air conditioning system
17 Diesel fuel filter or air conditioning system
18 Starter
19 —
20 Horn
21 Engine electronics
22 Engine electronics
23 Headlight range adjustment
24 Fuel pump
25 —
26 Engine electronics
27 Heating, air conditioning system
28 —
29 Power steering
30 Engine electronics
31 Rear window wiper
32 Brake light switch
33 Headlight range adjustment, light switch, clutch switch, instrument, driver’s door module
34 Control unit, steering column module
35 Infotainment system
36 Cigarette lighter, front power outlet
Fuse assignments in conjunction with load compartment fuse box version B
Number Circuiy
1 ABS
2 ABS
3 Interior fan electronic climate control
4 Interior fan heating and air conditioning system
5 Radiator fan
6 Radiator fan
7 Windscreen washer system
8 Horn
9 Headlight washer system
10 —
11 —
12 —
13 Fog light
14 Windscreen wiper
15 Windscreen wiper
16 Control module electronics, Open&Start system, ABS, brake light switch, TwinTop
17 Diesel fuel filter heating
18 Starter
19 Transmission electronics
20 Air conditioning system
21 Engine electronics
22 Engine electronics
23 Adaptive forward lighting, headlight range adjustment
24 Fuel pump
25 Transmission electronics
26 Engine electronics
27 Power steering
28 Transmission electronics
29 Transmission electronics
30 Engine electronics
31 Adaptive forward fighting, headlight range adjustment
32 Brake system, air conditioning system, clutch switch
33 Adaptive forward lighting, headlight range adjustment, light switch
34 Control unit, steering column module
35 Infotainment system
36 Mobile telephone, Infotainment system, display
Load compartment fuse box
The fuse box is behind a cover. Do not store any objects behind the cover. Depending on the equipment, there are two different fuse boxes.

Saloon 5-door, Caravan, Van
To open, turn both catches with a coin and fold down cover .

Saloon 3-door
To open, fold the cover upwards.

Saloon 4-door
To open, twist catch anti-clockwise and fold down cover

TwinTop
To open, pull the two knobs, remove the clips and fold the cover upwards.

Fuse box version A
Opel Astra H - bezpieczniki - bagażnik - wersja A
Vauxhall Astra (Astra J) – fuse box – load compartment – version A
Number Circuit
1 Fog light
2 –
3 Load compartment power outlet
4 Reversing lights
5 Rear power windows
6 Air conditioning system
7 Front power windows
8 Heated exterior mirrors
Fuse box version B

Opel Astra H - bezpieczniki - bagażnik - wersja B
Vauchall Astra (Astra J) – fuse box – load compartment – version B
Number Circuit
1 Front power windows
2 —
3 Instruments
4 Heating, air conditioning system, electronic climate control
5 Airbags
6 —
7 —
8 —
9 —
10 —
11 Heated rear window
12 Rear window wiper
13 Parking assist
14 Heating, air conditioning system
15 —
16 Seat occupancy recognition, Open&Start system
17 Rain sensor, tyre pressure monitoring system, interior mirror
18 Instruments, switches
19 —
20 CDC
21 Heated exterior mirrors
22 Sun roof
23 Rear power windows
24 Diagnostics plug
25 —
26 Electrical foldable exterior mirrors
27 Ultrasonic sensor, anti-theft alarm system
28 —
29 Cigarette lighter, front power outlet
30 Rear power outlet
31 —
32 —
33 Open&Start system
34 Sun roof, TwinTop
35 Rear power outlet
36 Socket for towing equipment
37 —
38 Central locking system, terminal 30
39 Left seat heating
40 Right seat heating
41 —
42 —
43 —
44 —
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.