Operation Manual

Problems with the transmission
Problem
Possible causes/consequences and M Solutions
The transmission has
problems shifting gear.
The transmission is losing oil.
X
Have the transmission checked at a qualified specialist workshop
immediately.
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.
The transmission is in emergency mode.
7G-TRONIC: it is only possible to shift into second gear and reverse
gear.
9G-TRONIC: it is only partly possible to engage the gears or the trans-
mission is in position N.
X
Stop the vehicle.
X
Shift the transmission to position P.
X
Switch off the engine.
X
Wait at least ten seconds before restarting the engine.
X
Shift the transmission to position D or R.
7G-TRONIC: If D is selected, the transmission shifts into second
gear, if R is selected, the transmission shifts into reverse gear.
X
Have the transmission checked at a qualified specialist workshop
immediately.
Problems with PLUG-IN HYBRID operation (Y page 254).
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.
!
Since ESP
®
engages automatically, the igni-
tion must be switched off (the SmartKey or
Start/Stop button must be in position 0 or 1)
if:
R
the electric parking brake is being tested
on a brake dynamometer
R
the vehicle is being towed with only one
axle raised (not permitted for vehicles with
4MATIC).
The brake system could otherwise be dam-
aged.
!
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. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling.
G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
Refueling
177
Driving and parking
Z