Coolant Level - CITROËN DS 4 Handbook

Coolant level

The coolant level should be close
to the "MAX" mark but should never
exceed it.
When the engine is warm, the temperature of
the coolant is regulated by the fan.
In addition, as the cooling system is pressurised,
wait at least one hour after switching off the
engine before carrying out any work.
To avoid any risk of scalding, unscrew the cap
by two turns to allow the pressure to drop. When
the pressure has dropped, remove the cap and
top up the level.
Fluid specification
The coolant must conform to the
manufacturer's recommendations.
The cooling fan may start after
switching off the engine: take care
with articles and clothing that might
be caught by the fan blades.
Screenwash / headlamp
wash fluid level
To check the level or top up the
fluid on vehicle fitted with headlamp
washers, immobilise the vehicle and
switch of the engine.
F Open the bonnet and secure it with the
stay.
F Open the screenwash reservoir filler cap.
F Take and pinch the level gauge to block its
breather.
F Remove the gauge completely from
the reservoir to read the level in the
transparent section.
F Top up if necessary.
F Refit the filler cap to the reservoir and
close the bonnet.
Specification of the fluid
To ensure optimum cleaning and to avoid
freezing, the fluid should never be topped up or
replaced by plain water.
In wintry conditions, the use of a fluid
with an ethyl alcohol or methanol base is
recommended.
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