To the specified intervals in the "scheduled maintenance chart" (sect. 4 - 2) Check the coolant level contained in the expansion reservoir, on the right side of the vehicle.
The coolant level must be between the max. And min marks on the tank.
If the level is low, top up with the recommended coolant.
Remove the filler cap (1) and top up with new coolant to the specified level.
Refit the plug (1).

For optimal operating conditions (coolant mixture starting to freeze at -20 C), the recommended fluid antifreeze should be mixed with water in the following percentages: antifreeze: 35 to 40% of the volume; water: 65 to 60% of the volume.
Important
Very hard water with a high mineral salt content can damage the engine.
Increase the amount of antifreeze to up to 55% volume in the case of very cold climates.
Important
Solutions with less than 30% of antifreeze will not provide sufficient protection against corrosion.
Changing and cleaning the air filters
Changing the coolantAir temperature sensor
Introduction
The engine control system on the diavel uses a sensor that measures air
temperature. This sensor has a resistance of
ntc type (negative temperature coefficient), that reduces its own value when the
temperature increases. The air
temperature sensor allows the engine control unit t ...
Units of measurement modification function
This function allows you to change the units of measurement
of the displayed values.
To access the function it is necessary to view the "setting" menu page 48, using
button (1, fig. 14) ?"" or (2, fig.
14) ?" " select the "set units" function
and pre ...
Removal of the cylinder heads
Using the tool code 88713.2676, Undo the nuts (21) on the cylinder head stud
bolts.
Remove the cylinder head nuts (21) and special washers (22).
Remove the cylinder head assembly by lifting it off the engine studs.
Repeat the same procedure for the other cylinder head. ...