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battery is loosing power, probably there is power thief
Your alternator is defective and not recharging the battery. Have the alternator checked.
Alternator bad or wiring fault to alternator.
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.
its the tyre pressure sensor
sounds like your turbo is faulty
remove egr and clean it.refit should cure the promblem.EGR STANDS FOR EXHAUST GAS RECIRCULATER.
changeing side light bulb
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 :-)
under the engine beside the paseneger wheel, blue connector