Never carry out any work on the engine or in the engine compartment if you are not familiar with the requisite procedures and general safety requirements, or if you only have access to incorrect operating equipment, service fluids, and unsuitable tools . The work should be carried out by a qualified workshop if you are uncertain. Please ensure that the following are checked regularly, preferably every time you fill the tank:

Windscreen washer fluid level Windscreen wiper and washer Windscreen wipers Windscreen washer .

Engine oil level Engine oil Engine oil Engine compartment Engine oil_5 Oil see Engine oil_5 .

Engine coolant level Coolant Coolant Engine compartment Coolant_5 Engine coolant see Coolant_5 .

Brake fluid level Braking, stopping and parking Brakes Parking .

Tyre pressure Wheels and tyres Wheels and tyres Tyres see Wheels and tyres_0 .
Information on changing bulbs .
Checks when filling the tank
FuelDiesel particulate filter
First read and observe the introductory information
and safety warningsThe diesel particulate filter filters out soot particles
in the exhaust gas. The soot particles gather in the filter and are burnt under
high temperatures periodically (regeneration). Heat produced can
warm the engine.
...
CAN Bus Wires, Repairing
Unshielded two-strand wiring -1-
and -2- with a cross section of
0.35 mm2 or 0.5 mm2
can be used as CAN bus wiring.
The color coding of CAN bus wires can be found in the
following table:
...
A/C without Magnetic Clutch with Torsion-Elastic Clutch
Caution
Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
system.
Only use tools and materials approved by the
manufactu ...