416 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
A 
Reserve fuel
The fuel level has dropped below 
the reserve mark.
Refuel at the next gas station 
(page 323).
Check gas cap
See Operator’s Manual
A loss of pressure has been de-
tected in the fuel system. The 
fuel cap may not be closed prop-
erly or the fuel system may be 
leaky.
Check the fuel cap (
page 323).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an au-
thorized Mercedes-Benz Light Truck Cen-
ter.
a
Hood open
 
Trunk open
You are driving with the hood or 
the tailgate open.
Close the hood (
page 326) or the tail-
gate (
page 120).
F
Key
Check battery
The SmartKey with 
KEYLESS-GO* batteries are 
discharged.
Change the batteries (
page 440).
Please do
not forget key
This display appears (for a maxi-
mum of 60 seconds) if the driv-
er’s door is opened with the 
engine shut off and no SmartKey 
in the starter switch.
This message is only a reminder.
Insert SmartKey in the starter switch.
Take the SmartKey with KEYLESS-GO* 
with you when leaving the vehicle. 
431 Practical hints
Where will I find ...?
Trunk area shown with spare wheel 
removed1Wheel bolt wrench with screwdriver
2Vehicle jack
3Collapsible wheel chock
4Spare fuses, fuse chart, fuse extractor
5Towing eye bolt
6Alignment bolt
7Wheel bolts for 17" light alloy rims or 
Minispare wheel1Wheel bolt wrench
2Screwdriver
3Interchangeable slot
Screwdriver2 is placed inside the handle 
of wheelbolt wrench1.Vehicle jack
iVehicles with scissors-type jack see 
separate instructions.
!To prevent damage, always disengage 
the elastic strap and lower the cargo 
compartment floor (
page 430) be-
fore closing the tailgate.
Warning!
G
The jack is designed exclusively for jacking 
up the vehicle at the jack take-up brackets 
built into both sides of the vehicle. To help 
avoid personal injury, use the jack only to lift 
the vehicle during a wheel change. Never 
get beneath the vehicle while it is supported 
by the jack. Keep hands and feet away from 
the area under the lifted vehicle. Always 
firmly set parking brake and block wheels 
before raising vehicle with jack.
Do not disengage parking brake while the 
vehicle is raised. Be certain that the jack is 
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack 
on level surface.
Make sure that the jack arm is fully seated 
in the jack take-up bracket. Always lower 
the vehicle onto sufficient capacity jack-
stands before working under the vehicle.