Mercedes-Benz GLS Operator's Manual page 160
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Also See for GLS:
- Operator's manual (682 pages) ,
- Owner's manual (565 pages) ,
- Maintenance booklet (42 pages)
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Refueling
158
Problems with fuel and the fuel tank
Problem
Fuel is leaking from the
vehicle.
The engine does not
start.
The fuel filler flap cannot
be opened.
DEF (BlueTEC vehicles only)
General notes
To function properly, BlueTEC exhaust gas after-
treatment must be operated with the reducing
agent DEF. Adding DEF is one of the tasks per-
formed during maintenance.
Possible causes/consequences and M Solutions
G
WARNING
The fuel line or the fuel tank is faulty.
Risk of explosion or fire.
Apply the electric parking brake.
X
Switch off the engine.
X
Remove the SmartKey from the ignition lock.
X
or, on vehicles with KEYLESS‑GO:
Open the driver's door.
X
The vehicle electronics are now in key position u. This is the same
as the SmartKey having been removed.
Do not restart the engine under any circumstances.
X
Consult a qualified specialist workshop.
X
The fuel tank of a vehicle with a diesel engine has been run completely
dry.
Refuel the vehicle with at least 5.3 US qt (5 liters) of diesel.
X
Turn the ignition on for approximately ten seconds (
X
Start the engine continuously for up to ten seconds until it runs
X
smoothly.
If the engine does not start:
Turn the ignition on again for approximately ten seconds
X
(
page 140).
Y
Start the engine again continuously for up to ten seconds until it
X
runs smoothly.
If the engine does not start after three attempts:
Consult a qualified specialist workshop.
X
The fuel filler flap is not unlocked.
Unlock the vehicle (
X
The SmartKey battery is discharged or nearly discharged.
Unlock the vehicle using the mechanical key (
X
The fuel filler flap is unlocked, but the opening mechanism is jammed.
Consult a qualified specialist workshop.
X
page 77).
Y
When the supply of DEF is almost used up, the
Check Additive See Operator's Manual
message is shown in the multifunction display.
If you drive the vehicle faster than 10 mph
(16 km/h), the
Check Additive See Opera‐
tor's Manual
message goes out after approx-
imately one minute.
page 140).
Y
page 79).
Y
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