Renault Laguna 2 – fuse and relay

Renault Laguna 2nd generation was produced in 2001, 2002, 2003, 2004, 2005, 2006 and 2007. During this time, the car underwent a facelift: the radiator grille was slightly changed, and the handling and safety were also improved. In this article you will find information on the location of all electronic control units, as well as a designation of fuse and relay box for a Renault Laguna 2 generation car with diagrams and photographs.

Renault lagoon 2 logo



Diagram of all blocks Renault Laguna 2


  1. ABS computer and dynamic stabilization systems
  2. Fuel injection computer
  3. Accumulator battery
  4. Automatic transmission computer
  5. CD changer
  6. Renault card reader
  7. Central switching unit
  8. Air conditioner computer
  9. Radio and navigation equipment
  10. Central display
  11. Power window control unit
  12. Speech synthesizer computer
  13. Side impact sensor
  14. Airbag computer
  15. Dashboard
  16. Steering wheel lock computer
  17. Salon central unit
  18. Battery discharge warning lamp corrector
  19. Computer for storing adjustments of the driver’s seat
  20. Parking aid computer

Engine compartment

The main box in the engine compartment is next to the battery.

block under the hood


Block diagram under the hood

Circuit breakers

1(7.5A) Automatic transmission
3(30A) Engine management
4(5A / 15A) Automatic transmission
5(30A) Brake servo vacuum pump relay (F4Rt)
6(10A) Engine management
9(20A) Air conditioning system
10(20A / 30A) Anti-lock braking system / stability control system
11(20A / 30A) Buzzer (s)
13(70A) Coolant Heaters – If Equipped
14(70A) Coolant Heaters – If Equipped
15(60A) Cooling fan motor control
16(40A) Headlamp washers, heated rear window, multifunction control module
17(40A) Anti-lock braking system / stability control system
18(70A) Combination switch, daylight system, multifunction control box
19(70A) Heater / air conditioner, multifunction control unit
20(60A) Battery current monitor relay (some models), combination switch (some models), daytime running lights, multifunction control box
21(60A) Power seats, multifunction control module, fuse / relay box, center console, sunroof
22(80A) Heated windshield (some models)
23(60A) Windshield wiper, electric parking brake

Relay Type 1

  1. Coolant heater relay
  2. Cooling fan motor relay (without A / C)
  3. Not used
  4. Not used
  5. Brake servo vacuum pump relay
  6. Fuel pump relay
  7. Diesel heater relay
  8. Fuel interlock relay
  9. A / C Fan Low Speed ​​Relay
  10. Air conditioner fan relay
  11. Thermoplunger relay 2

Relay Type 2

  1. Not used
  2. A / C Fan Low Speed ​​Relay
  3. Not used
  4. Not used
  5. Not used
  6. Fuel pump relay
  7. Heater relay (fuel gas ventilation system)
  8. Fuel pump relay
  9. A / C Fan Low Speed ​​Relay
  10. A / C blower motor relay
  11. Not used

The entire electrical circuit is protected by a main fuse located on the positive battery cable.

lagoon 2 block for akb

Passenger compartment

Box 1 (main)

Located on the left side at the end of the dashboard.


block photo

On the back of the protective cover there will be an up-to-date fuse assignment diagram and spare fuses (if they are of course preserved).


Scheme 1


F1(20A) High beam headlights
F2(10A) Parking brake switch, ignition reader, multifunction control module, starter switch
F3(10A) Headlight range control unit, headlight range control unit (xenon headlights), windshield washer nozzle heaters, instrument cluster, voice synthesizer
F4(20A) Anti-theft system, automatic transmission (AT), central locking, heater / air conditioning system, rain sensor, interior air temperature sensor fan, interior rearview mirror, parking system, reversing lights, switch lights, windshield wiper motor
F5(15A) Interior lamps
F6(20A) Air conditioning, automatic transmission (AT), door lock, cruise control, diagnostic connector (DLC), power door mirrors, power windows, switch lights, brake lights, washers / wipers windshield
F7(15A) Headlamp leveling control module (xenon headlights), headlight range control, instrument cluster, LH headlamp – low beam
F8(7.5A) Right front dimensions
F9(15A) Direction indicators / hazard warning lights
F10(10A) Audio, power seats, power windows, instrument cluster, navigation, telematics
F11(30A) Air conditioning, fog lights, instrument cluster, voice synthesizer
F12(5A) SRS system
F13(5A) Anti-lock braking system (ABS)
F14(15A) Buzzer (s)
F15(30A) Driver’s door control module, power door mirrors, power windows
F16(30A) Passenger door control module, power windows
F17(10A) Rear fog lamps
F18(10A) Heated door mirrors
F19(15A) RH headlamp-low beam
F20(7.5A) Audio CD changer, instrument panel grille illumination, glove compartment illumination, instrument cluster rheostat, interior lamps, front left-hand dimensions, license plate lamps, navigation system, switch illumination
F21(30A) Rear window washer, high beam
F22(30A) Central locking
F23(15A) Accessory power connectors
F24(15A) Auxiliary equipment socket (rear),  cigarette lighter
F25(10A) Electric steering column lock, heated rear window, front seats, rear window lockout

The fuse number 24 at 15A is responsible for the cigarette lighter.

Relay circuit

Relay in salon

Circuits protected

  • R2 Heated rear window
  • R7 Front fog lamps
  • R9 Windscreen wipers
  • R10 Windscreen wipers
  • R11 Rear window wiper / reversing lights
  • R12 Door lock
  • R13 Door lock
  • R17 Rear window wiper
  • R18 Temporary activation of interior lighting
  • R19 Additional electrical equipment
  • R21 Engine start inhibit
  • R22 “Plus” after ignition feed
  • R23 Accessories / optional audio system / rear door power windows
  • SH1 Rear door power window shunt
  • SH2 Shunt for front power windows
  • SH3 Headlamp low beam shunt
  • SH4 Parking light circuit shunt

Box 2 (optional)

This unit is located in the passenger side dashboard behind the glove box (glove compartment). The hotel part can be located on the fuse and relay box.

laguna 2 block 2


Diagram of an additional block in the dashboard


17Power window relay
3Power seat relay
4Daytime running headlight warning lamp relay
5Daytime running light relay
6Headlight washer pump relay
7Brake light cut-off relay
F26(30A) Trailer socket
F27(30A) Luke
F28(30A) Power window regulator, rear left
F29(30A) Power window regulator, rear right
F30(5A) Steering wheel position sensor
F31Not used
F32Not used
F34(20A) Driver and passenger seat heating fuse
F35(20A) Heated front seats
F36(20A) Power seat – driver’s side
F37(20A) Power passenger seat

Box 3

Another fuse located under the ashtray on the center console.

Ashtray block

This fuse protects the power supply circuit of: Diagnostic connector, Car radio, Air conditioning ECU, Seat memory ECU, Combined display (clock / outside temperature / car radio), Navigation ECU, Tire pressure monitor ECU, Central communication unit, security alarm system.

Comments 6

  • my 2001 renault laguna 3.0 front windows working fine rear windows not working from front or back buttons

  • My Laguna 3.0 V6,07 starts fine when cold but once operating temp is reached there is no cranking when start button pressed. Allow to cool down, sometimes an hour or two and car starts.

    • Same issue, Laguna 1.9 dci grandtour here. Don’t know if you fixed yours, but.. popular suspects are the relays by the drivers’ knee/feet on my left hand drive Laguna. The main fuse on top of the battery (replaced, 2 euro, problem still exists). Bad contacts or bad solenoid on the starter motor. Car not recognising that the steering lock has been released. Temporary solution is to wiggle the steering wheel a little after the card has been inserted but before you hit the start button. That’s as far as I have got! She’s lovely once she starts!! 😂😂

  • Useful, thanks!

  • Do we know why after a replacement Chinese mirror switch the mirror folding is not working?Tried genuine one but still not folding. All other mirror functions work

  • Where do I find the fuse for the alarm system on my 2007 Laguna please?

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