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.
Contents
Locations
Diagram
Designation
- ABS computer and dynamic stabilization systems
- Fuel injection computer
- Accumulator battery
- Automatic transmission computer
- CD changer
- Renault card reader
- Central switching unit
- Air conditioner computer
- Radio and navigation equipment
- Central display
- Power window control unit
- Speech synthesizer computer
- Side impact sensor
- Airbag computer
- Dashboard
- Steering wheel lock computer
- Salon central unit
- Battery discharge warning lamp corrector
- Computer for storing adjustments of the driver’s seat
- Parking aid computer
Engine compartment
The main box in the engine compartment is next to the battery.
Diagram
Circuit breakers
| 1 | (7.5A) Automatic transmission |
| 2 | – |
| 3 | (30A) Engine management |
| 4 | (5A / 15A) Automatic transmission |
| 5 | (30A) Brake servo vacuum pump relay (F4Rt) |
| 6 | (10A) Engine management |
| 7 | – |
| 8 | – |
| 9 | (20A) Air conditioning system |
| 10 | (20A / 30A) Anti-lock braking system / stability control system |
| 11 | (20A / 30A) Buzzer (s) |
| 12 | – |
| 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
- Coolant heater relay
- Cooling fan motor relay (without A / C)
- Not used
- Not used
- Brake servo vacuum pump relay
- Fuel pump relay
- Diesel heater relay
- Fuel interlock relay
- A / C Fan Low Speed Relay
- Air conditioner fan relay
- Thermoplunger relay 2
Relay Type 2
- Not used
- A / C Fan Low Speed Relay
- Not used
- Not used
- Not used
- Fuel pump relay
- Heater relay (fuel gas ventilation system)
- Fuel pump relay
- A / C Fan Low Speed Relay
- A / C blower motor relay
- Not used
The entire electrical circuit is protected by a main fuse located on the positive battery cable.
Passenger compartment
Box 1 (main)
Located on the left side at the end of the dashboard.
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).
Diagram
Assignment
| 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 |
| F26 | – |
The fuse number 24 at 15A is responsible for the cigarette lighter.
Relay circuit
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.
Diagram
Designation
| 17 | Power window relay |
| 3 | Power seat relay |
| 4 | Daytime running headlight warning lamp relay |
| 5 | Daytime running light relay |
| 6 | Headlight washer pump relay |
| 7 | Brake 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 |
| F31 | Not used |
| F32 | Not used |
| F33 | – |
| 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.
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.
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?
Thankyou.