check engine light RENAULT TWINGO 2018 User Guide
Page 180 of 232
5.10
For your safety, do not 
remove the bonnet holding 
straps.
Risk of the bonnet falling 
on the road surface.
Dipped/Main beam headlight
To change the bulb:
– disconnect wiring  1;
– remove cover  A;
–  unclip the spring  3 and remove the 
bulb.
Bulb type: H4.
It is  essential to use anti-U.V. 55W 
bulbs so as not to damage the plastic 
on the headlights.
Do not touch the bulb glass. Hold it 
by its base.
When the bulb has been changed, 
make sure you refit the cover correctly.
FRONT HEADLIGHTS: changing bulbs (1/2)
Direction indicator lights
Turn the bulb holder  2 a quarter of a 
turn and take out the bulb.
Bulb type: PY21W.
Once the bulb has been replaced, 
check that it is properly secured.
A
3
2
The bulbs are under pres-
sure and can break when 
replaced.
Risk of injury.
1
Please note when work-
ing close to the engine that 
it may be hot. The engine 
cooling fan may also start 
at any moment. The 
 warning 
light in the engine compartment re-
minds you of this.
Risk of injury.    
Page 202 of 232
5.32
On the roadPOSSIBLE CAUSESWHAT TO DO
Vibrations. Tyres not inflated to the correct pres-
sure, incorrectly balanced or dam-
aged. Check the tyre pressures: if this is not the 
problem, have them checked by an ap-
proved Dealer.
Coolant boiling in the coolant reservoir. Mechanical fault: damaged cylinder 
head gasket.Stop the engine.
Contact an approved Dealer.
Smoke under the bonnet. Short circuit or cooling system leak.Stop, switch off the ignition, stand away 
from the vehicle and contact an approved 
dealer.
The oil pressure warning light comes 
on:
while cornering or braking The level is too low. Top up the engine oil level (refer to the in-
formation on “Engine oil level: topping up/
filling” in Section 4).
is slow to go out or remains lit under 
acceleration Loss of oil pressure.
Stop the vehicle and contact an approved 
Dealer.
OPERATING FAULTS (3/6) 
Page 203 of 232
5.33
On the roadPOSSIBLE CAUSESWHAT TO DO
Steering becomes heavy. Assistance overheating.
Fault with the electric assistance 
motor.
Fault in the assistance system. Drive carefully at reduced speed, be aware 
of the level of force in the steering wheel 
needed to turn the wheels. Consult an ap-
proved dealer
The engine overheats. The coolant 
temperature indicator and the warn-
ing light 
®  come on. Engine cooling fan not working. Stop the vehicle, switch off the engine and 
contact an approved Dealer.
Coolant leaks. Check the coolant reservoir: it should con- tain fluid. If there is no coolant, consult an 
approved Dealer as soon as possible.
OPERATING FAULTS (4/6)
Radiator: If there is a lack of coolant, remember that it must never be topped up \
using cold coolant while the engine is 
very warm. After any procedure on the vehicle which has involved even partial drain\
ing of the cooling system, it must 
be refilled with a new mixture prepared in the correct proportions. Remi\
nder: only products approved by our Technical 
Department may be used for this purpose.