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.
Renault Clio 2 electric problem with dashboard, THE LIGHT ON THE DASH IS NOT ILLUMINATING
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.
How to remove drivers' side light cover
Behind front off side light in engine bay, in Laguna 11 Hatchback 1.8ltr
Try asking at www.renaultforums.co.uk :-)
time for a service!
Alternator bad or wiring fault to alternator.
Bring to a shop that has an ABS scanner to determine the problem
under the engine beside the paseneger wheel, blue connector
Engine