Volvo V60 Plug-In Hybrid Owner's Manual page 263

dependent function which automatically limits
the option of using electric operation with the
PURE or HYBRID drive mode in low tempera-
tures. If such a situation occurs then the die-
sel engine will be running the whole time.
Diesel fuel thermal resistance is a measure of
the usefulness of the fuel at low tempera-
tures. Normally, the diesel fuel's thermal
properties are adapted to the climate zone
and season in which it is distributed and sold.
See also information about diesel fuel (p.
282).
The automatic limitation in low temperatures
increases gradually depending on the age of
the fuel in the tank. When the car has recently
been refuelled there is no limitation, but it
increases the older the fuel in the tank
becomes, counted in months.
The purpose of the function is, in low outside
temperatures, to allow the car to consume
fuel at such a rate that fresh fuel - with the
correct thermal resistance - can/must be
added before the critical temperature for the
current fuel is reached.
Fuel age
Old diesel fuel (from approx. 5 months and
older) in combination with condensation can,
in some circumstances, lead to algal and
bacterial growth in the fuel system and/or oxi-
dation of the fuel with the risk of operational
disruption as a result.
To avoid such problems, the car has a built-in
function which checks the age of the fuel. In
connection with this, a self-explanatory text
message may appear, for example:
•
Aged fuel Start diesel engine to
consume fuel
•
Aged fuel Engine will run to consume
fuel
•
Aged fuel Fill up fuel tank
Follow the recommended action where
appropriate.
Related information
•
Drive systems (p. 257)
08 Starting and driving
08
261