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Problems with the transmission
Problem
Possible causes/consequences and MM Solutions
The transmission has
problems shifting gear.
The transmission is losing oil.
X
Have the transmission checked at a qualified specialist workshop
immediately.
7G-TRONIC:
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.
The transmission is in emergency mode.
It is only possible to shift into second gear and reverse gear.
X
Stop the vehicle.
X
Shift the transmission to position j.
X
Switch off the engine.
X
Wait at least ten seconds before restarting the engine.
X
Shift the transmission to position h or k.
If h is selected, the transmission shifts to second gear; if k is
selected, the transmission shifts to reverse gear.
X
Have the transmission checked at a qualified specialist workshop
immediately.
9G-TRONIC:
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.
The transmission is in emergency mode.
It is only partly possible to engage the gears, or the transmission is in
position i.
X
Stop the vehicle.
X
Shift the transmission to position j.
X
Switch off the engine.
X
Wait at least ten seconds before restarting the engine.
X
Shift the transmission to position h or k.
X
Have the transmission checked at a qualified specialist workshop
immediately.
Transfer case
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always trans-
mitted to both axles.
!
Performance tests may only be carried out
on a 2-axle dynamometer. The brake system
or transfer case could otherwise be damaged.
Contact a qualified specialist workshop for a
performance test.
!
Because ESP
®
is an automatic system, the
engine and ignition must be switched off
(SmartKey in position 0 or 1 or Start/Stop
button in position 0 or 1) when the electric
parking brake is being tested on a brake dyna-
mometer (maximum 10 seconds).
Braking triggered automatically by ESP
®
may
seriously damage the brake system.
!
Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised, as
doing so will damage the transmission.
Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. Risk of fire and
explosion by improper handling of fuel.
You must avoid fire, open flames, smoking
and creating sparks. Switch off the ignition
before refueling and, if present, switch off the
auxiliary heating.
150
Refueling
Driving and parking
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