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2018 Seat León 5F Fuse Box Diagram

The 2018 Seat León (5F) has 2 fuse boxes. Choose the one you’re looking at.

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Dash panel fuse box (fuse holder C)

The holder is behind the fold-down cover at the driver's end of the dash panel, or in the glove box on right-hand-drive cars; take the cover off from its lower edge and the puller sits in a clip inside. This is the year the 5F's fuse numbers were shuffled: the 05.2017 handbook moved the left headlight feed from 31 to 11, the right headlight from 23 to 24, the sunroof onto 23, the interior lighting from 43 to 27 and the driving-mode selector from 13 to 52, and the 11.2017 edition put the SEAT Sound amplifier on 43.

The plate itself did not change. Its top row holds 1 on end at the far left, three relays and 2 on end at the far right. Under them the positions run in left-to-right rows: 3 beside 4 to 10 and 11 to 14; 15 to 21 beside 22; 23, then 24 to 28, then 29 over 30, then 31; 32 to 37 with 38, 39, 40 a step lower, 41 and 42; 43, 44, the tall 45 and 46 to 48; and finally 49, 50, 51 and 52 with 53 alone on the right-hand lobe over the two relays.

1233334555555561010107101010855597.57.57.51040404011202020121340404014101010157.57.57.5167.57.57.5177.57.57.5187.57.57.5192015151521151515223030302340404024303030252020202630303027252525282930317.57.57.532555337.57.57.534101010357.57.57.5367.57.57.53725252538303030392020204041404040423030304315151544151515454615151547485554950511515155230303053
No.FunctionAmpDescription
1Not used
2Not used
3Not used
43 AMINITaxi preparation
55 AMINIData bus diagnostic interface (gateway)
65 AMINIAutomatic gearbox selector lever
710 AMINIAir conditioning and heater control panel, heated rear window
810 AMINIDiagnostic connector, handbrake switch, light switch, reversing light, interior lighting, lit door sill
95 AMINISteering column electronics
107.5 AMINIRadio display
1140 AATOLeft headlight (this feed sat on position 31 until the 05.2017 edition)
1220 AATORadio
13Not used
1440 AATOFresh air blower for the air conditioning (30 A up to the 05.2016 edition)
1510 AMINIKeyless entry and start (KESSY)
167.5 AMINIConnectivity Box
177.5 AMINIInstrument cluster (5 A up to the 05.2017 edition)
187.5 AMINIRear view camera
197.5 AMINIKeyless entry and start (KESSY), second feed
20Not used
2115 AMINIHaldex all-wheel drive control unit (4Drive)
2215 AATOTrailer preparation
2330 AJCASEElectric sunroof (the right headlight feed sat here until the 05.2017 edition)
2440 AATORight headlight (the sunroof sat here until the 05.2017 edition)
2530 AATODriver's door control unit and the rear window regulator behind it
2620 AATOFront seat heating
2730 AATOInterior lighting (moved here from position 43)
2825 AATOTrailer preparation
29Not used
30Not used
31Not used
327.5 AMINIControl unit for the parking aid, front camera and radar sensor
335 AMINIAirbag control unit and the passenger airbag warning lamp
347.5 AMINIReversing light switch, climate sensor, auto-dimming mirror, rear USB sockets
3510 AMINIDiagnostic connector, headlight range control unit and its two adjuster motors
367.5 AMINIRight LED headlight (10 A up to the 05.2017 edition)
377.5 AMINILeft LED headlight (10 A up to the 05.2017 edition)
3825 AATOTrailer preparation
3930 AATOFront passenger's door control unit and the rear window regulator behind it
4020 AATO12 V socket and cigarette lighter
41Not used
4240 AATOCentral locking, through the onboard supply control unit
4330 AJCASESEAT Sound / Beats audio amplifier, CAN and MOST feed
4415 AATOTrailer preparation
4515 AATODriver's electrically adjustable seat
46Not used
4715 AATORear window wiper motor
48Not used
495 AMINIClutch position sender and the two starter motor relays
50Not used
51Not used
5215 AMINIDriving mode selection (moved here from position 13)
5330 AATOHeated rear window and its suppression filters

Engine compartment fuse box (fuse holder B)

You will find this holder on the electronics box at the left-hand end of the engine compartment, under a cover held by two locking tabs. It protects the engine management, the ABS unit, the starter and the auxiliary heater elements. The 11.2017 handbook drops the old 40/20 A rating for position 1 and prints a single 25 A instead — the only change to this box for the 2018 model year.

Column by column the numbers rise from the bottom of the plate towards the top: the left column ends at 3 and starts at 10, the middle column ends at 31 and starts at 38, the right column ends at 15 and starts at 21. Everything else sits around them — the cartridge pair 1 and 2 at the bottom left, 11 and 12 in the middle, 14 low on the right and 24 at the top, the flat 13 beside 14, and 23 above 22 at the top right. Six bolt-down terminals run along the bottom edge; the handbook neither numbers nor rates them.

High-current terminals (not numbered)25252514040402151515355547.57.57.555556555710101085559101010104040401140404012151515131415151515555167.57.57.517555183030301910101020215552230303023404040241515153132303030333435363738
No.FunctionAmpDescription
125 AJCASEABS / ESC control unit, second feed (40/20 A up to the 11.2016 edition)
240 AJCASEABS / ESC hydraulic control unit (40 A or 60 A according to equipment)
315 AATOEngine control unit: 15 A on petrol engines, 30 A on diesels
45 AATOEngine sensors: oil level and temperature sender, radiator fan control unit and engine valves (5 A or 10 A by engine)
57.5 AATOEngine sensors; gas shut-off valve relay and injectors on the 1.4 TGI (7.5 A or 10 A by engine)
65 AATOBrake pedal position sender
75 AATOEngine power supply: coolant valves and the charge air cooling pump (5 A or 10 A by engine)
810 AATOLambda probe heaters (10 A or 15 A by engine)
95 AATOEngine: ignition coils on petrol engines, glow period control unit and air mass meter on diesels (5, 10 or 20 A)
1010 AATOFuel pump control unit (10, 15 or 20 A by engine)
1140 AJCASEAuxiliary heater element (PTC), circuit 2
1240 AJCASEAuxiliary heater element (PTC), circuit 3
1315 AATOMechatronic unit of the DSG dual-clutch gearbox (15 A on 0D9, 30 A on 0CW)
14Not used
1515 AATOTreble and bass tone horns and the horn relay
165 AATOOil level sender and gas shut-off valves on the 1.4 TGI; ignition coils on the 1.8/2.0 TSI (5, 15 or 20 A)
177.5 AATOMain relay, engine control unit and ABS control unit
185 AATOTerminal 30 reference voltage, battery monitor control unit
1930 AATOWindscreen wiper motor control unit
2010 AATOAnti-theft alarm horn
21Not used
225 AATOEngine control unit, terminal 50
2330 AATOStarter motor
2440 AJCASEAuxiliary heater element (PTC), circuit 1
3115 AATOElectronic front differential lock of the Cupra
32Not used
3330 AATOAutomatic gearbox oil pump
34Not used
35Not used
36Not used
37Not used
38Not used