Renault 2005 Megane Owner's Manual page 222

OPERATING FAULTS
On the open road
• Abnormal white smoke from the
exhaust.
• Vibrations.
• Coolant boiling in the expansion
bottle.
5.34
(continued)
CAUSES
Mechanical fault: damaged cylinder
head gasket.
Tyres not inflated to correct pressures,
incorrectly balanced or damaged.
Mechanical fault: cylinder head gasket
blown, faulty coolant pump.
Engine cooling fan not working.
REMEDIAL ACTION
Stop the engine.
Contact a RENAULT Dealer.
Check tyre pressures. If this is not the
problem, have them checked by a
RENAULT Dealer.
Stop the engine.
Contact a RENAULT Dealer.
Check appropriate fuse, otherwise
contact a RENAULT Dealer.