Mercedes-Benz R-Class 2009 Owners Manual - Manual (Page 334)

Vehicle status messages in the multifunction display
332
Display messages Possible cause/consequence Possible solution
¿ The fuel level is low. X Refuel at the next gas station.
4 Reserve Fuel The fuel level has dropped below the
reserve mark. X Refuel at the next gas station.
4 Ultra Low-sulfur
Diesel Fuel Only
Vehicles with diesel engine only:
The fuel level has dropped below the
reserve mark. X Refuel at the next gas station.
X Only use commercially available vehicular
ULTRA-LOW SULFUR DIESEL FUEL (15 ppm
SULFUR MAXIMUM).
4 Gas Cap Open A loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky. X Check the fuel cap ( Y page 245).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system
checked at an authorized Mercedes-Benz
Center.
ò Replace air filter The air filter is clogged. X Have the air filter checked at an authorized
Mercedes-Benz Center.
] Clean Fuel Filter There is water in the fuel filter. X Have the water drained at an authorized
Mercedes-Benz Center as soon as possible.
û Check Additive
See Operator's
Manual
The AdBlue ® supply is almost depleted. X Have the AdBlue ® tank refilled as soon as
possible ( Y page 375).
Contact an authorized Mercedes-Benz Center.
Practical hints