Audi A6 Typ 4G: Diesel fuel
Applies to: vehicles with diesel engine
Always use ULSD (Ultra Low Sulfur Diesel) No. 2.
The ULSD No. 2 meets the ASTM D975.
Diesel fuel with concentrations of biodiesel higher
than 5 % such as B ll, B20 or BIOO are strictly
prohibited.
Service station fuel pumps are labeled with the
correct fuel information for easy recognition by
the user. If the diesel fuel pump is not labeled
ask the station operator what fuel is being dispensed
before filling up your vehicle.
ULSD No. 2 may not be available outside the USA
and Canada. Be sure to check before traveling to
other countries.
ULSD No. 2 can become thicker in very cold temperatures,
and this can impair the engine's starting
and running. Depending on the season, gas
stations provide ULSD No. 2 that flows better in
cold temperatures so that you can continue operating
your vehicle as usual.
Note
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Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel filler flap.
If the power locking system should fail, you can
still open the flap manually - for detailed
Fig. 174 Right rear side of the vehicle: opening the fuel
filler door
Fig. 175 Fuel filler door with attached fuel cap
The fuel filler door is unlocked or locked by the
central locking system.
Openi
If the central locking system is faulty, the fuel
filler door can be unlocked manually.
Fig. 176 Right side trim in the luggage compartment : removing
the trim
Fig. 177 Luggage compartment: fuel fil
SEE MORE:
Overview - Additional Lamps and Controls Inside Passenger Compartment
1 - Front Cover
For the housing for the Automatic High Beam Assist Control Module
-J844- with Light Recognition Sensor -G399-
2 - Upper Cover
For Automatic High Beam Assist Control Module -J844-
3 
Specified Values for the Refrigerant Circuit Pressures
Note
Connect the Air Conditioning (A/C) service station. Refer to
→ Chapter "A/C Service Station, Connecting".
Observe the test requirements. Refer to
→ Chapter "Pressures, Checking".
- With the ignition switched