5. Close the engine cover.
4.7.2.5 Checking the AdBlue/DEF tank level
NOTE: When the AdBlue level decreases to 5% or less, the torque and maximum
rotation speed of the engine is slowly decreased.
NOTE: When the AdBlue level decreases to approximately 0%, the torque and
maximum rotation speed of the engine is slowly decreased. Finally, after
approximately one hour, the engine decreases to idling speed and the torque is
heavily limited. This is to ensure that the exhaust fume emissions remain in the
allowable limits set by legislative authorities.
NOTE: Fill up the AdBlue/DEF tank in time because a too low AdBlue level may
even lead to service codes. This may happen especially in high temperature
environments.
1. Check the AdBlue/DEF level regularly.
GUID-FA376465-CCF0-4B19-919E-CF794279780F
1. Low AdBlue level indicator
Check the AdBlue tank level regularly. The AdBlue level (in percents) is
shown on the A-pillar display.
2. Fill the tank whenever it is possible, even if the tank is almost full.
GUID-3E4EF0E0-8042-4446-B6B7-FD787B1553E4
1. AdBlue/DEF tank cap
4. Maintenance
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