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CAUTION
■
Do not continue if for some reason it is not possible to fill with coolant un-
der the current circumstances! Switch off the engine and seek assistance from
a specialist garage.
■
If the expansion tank is empty, do not top up with coolant. The system could
fill with air - risk of engine damage,
stop driving! Switch off the engine and
seek assistance from a specialist garage.
■
The concentration of coolant additive in the coolant must never be under
40%.
■
Over 60% of coolant additive in the coolant reduces the antifreeze protec-
tion and cooling effect.
■
A coolant additive that does not comply with the correct specification can
significantly reduce the corrosion protection of the cooling system.
■
Any faults resulting from corrosion may cause a loss of coolant and can con-
sequently result in major engine damage.
■
Do not fill the coolant above the mark
A
» Fig. 110 on page 111.
■
If an error occurs, leading to the engine overheating, the help of a professio-
nal garage is to be sought - there is a risk of serious engine damage occurring.
■
Additional headlights and other attached components in front of the air inlet
impair the cooling efficiency of the coolant.
■
Never cover the radiator - there is a risk of the engine overheating.
Checking the coolant level
Fig. 110
Coolant expansion reservoir
Read and observe and on page 110 first.
The coolant expansion bottle is located in the engine compartment.
Coolant expansion reservoir » Fig. 110
Mark for the maximum permissible coolant level
Mark for the lowest permissible coolant level
A
B
The coolant level should be kept between the marks
A
and
B
.
The coolant can be checked and topped up, if the following conditions are sat-
isfied.
The vehicle is standing on a horizontal surface.
The engine is turned off.
The engine is not heated.
The bonnet is open.
Checking the level
›
Check the level of coolant in the coolant expansion bottle » Fig. 110.
If the engine is warm, the test result may be inaccurate. The level can also be
above the mark
A
» Fig. 110 .
In the event of the coolant level being too low, a warning light appears in the
instrument cluster
» page 35. We still recommend inspecting the coolant lev-
el directly at the reservoir from time to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the cooling sys-
tem. Do not merely top up the coolant. Have the cooling system checked by a
specialist garage.
Replenishing
Read and observe and on page 110 first.
The coolant expansion tank must always contain a small amount of coolant
» page 111, in section Introduction.
›
Place a cloth over the cap of the coolant expansion tank and unscrew the
cap carefully.
›
Replenish the coolant.
›
Turn the cap until it clicks into place.
Do not use an alternative additive if the specified coolant is not available. In
this case, use just water and have the correct mixing ratio of water and cool-
ant additive restored by a specialist garage as soon as possible.
Only top up with new coolant.
111
Inspecting and replenishing
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