Turn on the ignition but do not start the car, press the button on the end of the wiper arm until the "miles to next service" is displayed on the odometer. Then press and hold the trip reset button until the display resets to 18000. This should also turn out the service and stop light. Turn off the ignition then restart the car.
If your car has serv (amber ) and stop (red) lights showing it could the immobiliser.
My 1996 Laguna lights come on and car won't start. Car needs to be started within a certain time period of doors being unlocked.
Using key lock all doors then re-open this should reset system.
I have had stop light on until car is started 3 times successfully (resets codes)
its the tyre pressure sensor
After a repair has been made on a Renault Laguna the service light will need to be reset. To do this plug the diagnostic tool into the computer and reset the light.
time for a service!
Both DCi and DXi Renault HGV vehicles the service reset is a manual procedure using the dashboard instruments.
fix airbag fault & serv light will go out
Renault Clio 2 electric problem with dashboard, THE LIGHT ON THE DASH IS NOT ILLUMINATING
On the Laguna 3 press the upper button on the right hand stalk until the service panel appears Hold the button in for several seconds and the panel will flash with the new mileage interval Release button andne service spanner light will go out Enjoy!
sounds like your turbo is faulty
changeing side light bulb
Dunno for sure but there's a very useful explanation for lag 2 air con control unit light on Renault forum, with pictures! worked a treat for mine.
Behind front off side light in engine bay, in Laguna 11 Hatchback 1.8ltr
How to remove drivers' side light cover