Checking Coolant Level - Mercedes-Benz Light Truck ML 320 Operator's Manual

Checking Coolant Level

To check the coolant level, the vehicle
must be parked on level ground and
the engine stopped.
Check coolant level only when coolant
is cold.
The coolant should reach the COLD
LEVEL mark in the reservoir.
Adding Coolant
If coolant has to be added, a 50/50
mixture of water and MB
anticorrosion/antifreeze should be
added.
After adding coolant, close cap until
you can hear it click a few times.
The drain plugs for the cooling
system are located on the left and
right side of the engine block directly
above the engine mounts and at the
bottom of the radiator.
Anticorrosion/antifreeze, see Coolants
in Index.
Warning!
In order to avoid possible serious
burns or injury:
• Use extreme caution when
opening the hood if there are any
signs of steam or coolant leaking
from the cooling system, or if the
coolant temperature gauge
indicates that the coolant is
overheated.
• Do not remove pressure cap on
coolant reservoir if engine
temperature is above 194°F (90°C).
Allow engine to cool down before
removing cap. The coolant
reservoir contains hot fluid and is
under pressure.
• Using a rag, slowly open cap
1
approximately / turn to relieve
2
excess pressure. If opened
immediately, scalding hot fluid
and steam will be blown out
under pressure.
• Do not spill antifreeze on hot
engine parts. Antifreeze contains
etnylene glycol which may burn if
it comes into contact with hot
engine parts.
103