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Automatic transmission*
Problem
Possible causes/consequences and
X
X Solutions The transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at a qualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop the vehicle.
X Move the transmission to position P.
X Turn the key in the ignition to position 0(Y page 75) or press
the Start/Stop button* repeatedly until all indicator lamps in
the instrument cluster go out.
X Wait at least 10 seconds before restarting the engine.
X Move the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist work-
shop immediately. PARKTRONIC*
Problem
Possible causes/consequences and
X
X Solutions Only the red segments
in the PARKTRONIC
warning display are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds and
the indicator lamp in
the PARKTRONIC but-
ton lights up. PARKTRONIC has malfunctioned and has switched itself off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The PARKTRONIC sensors are dirty or there is interference.
X
Clean the PARKTRONIC sensors (Y page 243).
X Switch the ignition back on. Troubleshooting
293Practical advice
* optional
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Page 300 of 373

Problem
Possible causes/consequences and
X
X Solutions You have lost a key.
X
Have the key cancelled at a Mercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. The engine cannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating* or inte-
rior lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 319).
or
X Jump-start the vehicle (Y page 323).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the key.
The steering lock is mechanically blocked.
44
X Remove the key and reinsert it into the ignition lock. While doing
this, turn the steering wheel in both directions. The engine cannot be
started using KEYLESS
GO*. The key is in the
vehicle. A door is open. Therefore, the key cannot be detected as easily.
X
Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle using the key in the ignition lock. 44
Not vehicles with DIRECT SELECT selector lever. Troubleshooting
297Practical advice
* optional
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Page 305 of 373

in cloth) from the right-hand edge, pulling
it up and out.
X Press release button ;down and simul-
taneously move the selector lever out of
position P.
The selector lever can now be moved freely
until it is returned to position P.Resetting the active bonnet (pedes-
trian protection) after triggering
i The active bonnet is available for all mod-
els except the E 63 AMG. The bonnet is raised at the back by approx-
imately 50 mm when active bonnet :is trig-
gered. Covers ;are then no longer on hous-
ing =.
You can reset a triggered bonnet yourself.
! Do not try to press down the raised bon-
net at the back. Otherwise, the bonnet
could be damaged.
You can still continue driving with the active
bonnet triggered and have this reset at a
qualified specialist workshop. If you pull the
release lever of the bonnet, you must reset
the bonnet before you continue driving. Resetting
G
Risk of accident
If you pull the release lever of the bonnet and
do not reset the bonnet, it is not locked at the front when you close it. The bonnet may then
open when driving and block your view. If you
pull the release lever of the bonnet, you must
reset the bonnet before you continue driving. G
Risk of injury
There is a risk of injury if the bonnet is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Owner’s Manual
and observe the relevant safety notes.
X Open the bonnet (Y page 219). Example: Saloon
X
Swing the bonnet up in centre Awith both
hands, until the covers of both bonnet
actuators ;no longer move.
Significant resistance can be felt when the
covers are pressed back down.
X Release bonnet :.
X Check whether bonnet actuator covers ;
lie flat against housing =(arrow).
X If bonnet actuator covers ; ;lie flat
against the housing: close bonnet:
(Y page 219).
or
X If bonnet actuator covers ; ;do not lie
flat against the housing: swing up bon-
net :at left ?and then at right B. Swing302
Resetting the active bonnet (pedestrian protection) after triggeringPractical advice
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X
Slide cover :of positive terminal ;in
the direction of the arrow .
X Connect positive terminal ;on your vehi-
cle to positive terminal =of donor battery
B using the jump lead, beginning with your
own battery.
X Start the engine of the donor vehicle and
run it at idling speed.
X Connect negative terminal ?of donor bat-
tery Bto earth point Aof your vehicle
using the jump lead, Connect donor bat-
tery Bfirst.
X Start the engine.
X First, remove the jump lead from earth
point Aand negative terminal ?, then
from positive terminal ;and positive ter-
minal =, each time disconnecting from the
battery on your own vehicle first.
X Have the battery checked at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Towing and tow-starting
Points to remember
G
Risk of accident
If you have the vehicle towed, you must use a
rigid towing bar if:
R the engine is not running.
R there is a brake system malfunction.
R there is a malfunction in the power supply
or the vehicle's electrical system.
The power steering and the brake force boos-
ter do not work when the engine is not run-
ning. Greater braking force will then be
required and brake pedal travel will be longer.
If necessary, depress the brake pedal with full
force.
Before towing away, make sure that the steer-
ing can be moved and is not locked.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehicle. G
Risk of accident
The vehicle is braked when the HOLD function
or Distronic Plus* is activated. Therefore, 324
Towing and tow-startingPractical advice
* optional
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