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When the key is turned to position 2 in the ignition
lock, the fuel filter indicator lamp in the
instrument cluster lights up for about 7 seconds. It
must go out when the engine is running.
If water in fuel indicator lamp does not go out or
comes on with the engine running, drain the water
from the fuel filter as soon as possible.
NOTE: Should the water in fuel indicator lamp
still not go out after the fuel filter has been drained, the
cause should be examined by an authorized Sprinter
Dealer.
If the indicator lamp does not light up for about
7 seconds with the key in the ignition lock in position 2,
there is a malfunction in the water separator system.
Have the cause rectified by an authorized Sprinter
Dealer.