Volvo VNL Operator's Manual page 126

Air Filter Blocked (option)
When the telltale lights, the engine air filter
is blocked. A blocked filter will cause
higher fuel consumption and black smoke.
To replace air filter, see the Operator's
Manual, Maintenance and Engine.
Too Cold for Engine Brake (Volvo Engine Only)
Position 2 of the engine brake should not
be switched on until the engine has become
warm (over 110 F [45 C]). If position 2 is
selected and the engine is too cold, this
symbol will be shown (however, VEB is
not activated).
Fault in Preheating
See page 249 for more information on the
Volvo engine preheater.
Graphic Display
T3008843
T3009355
T3008841
121