2020 MERCEDES-BENZ METRIS engine

Problems with the engine
Problem
Possible causes/consequences and
M SolutionsThe engine does not
start.
The starter motor can
be heard. There is a malfunction in the fuel supply.
X
Turn the key back to position g in the ignition lock before
attempting to start the engine again.
X Start the engine again.
Please bear in mind that lengthy and frequent starting attempts
will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. The engine does not
start.
The starter motor can
be heard. The reserve
fuel warning lamp is lit
and the fuel gauge is at
0. The fuel tank has been run dry.
X Refuel the vehicle. The engine does not
start.
The starter motor can-
not be heard. The on-board voltage is too low. The battery is too weak or dis-
charged.
X Jump-start the vehicle ( Y page 272).
If the engine cannot be jump-started, the starter motor is faulty.
X Consult a qualified specialist workshop. The engine does not
start.
The starter motor can-
not be heard. The battery is discharged or faulty.
X
Check the battery for damage.
X Charge the battery (Y page
262).The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine management system.
X Only depress the accelerator pedal slightly.
Unburnt fuel may otherwise get into the catalytic converter and
damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. Automatic transmission
Important safety notes
G
WARNING
The vehicle can suddenly accelerate if the
engine speed is above the engine idling
speed and you then select transmission position h or k. There is a risk of an acci-
dent.
When engaging transmission position
h or
k at a standstill, always keep the brake
pedal depressed firmly and do not depress
the accelerator pedal at the same time. 130
Automatic transmission
Driving and parking

G
WARNING
The automatic transmission switches to neu-
tral position N when you switch off the
engine. The vehicle may roll away. There is a
risk of an accident.
Before switching off the engine, always
switch to parking position P. Prevent the
parked vehicle from rolling away by applying
the parking brake.
! When the engine is switched off, rolling in
idle i can damage the power transmission
and result in transmission damage.
Always observe the instructions and safety
notes under "Tow starting and towing away"
( Y page
274).
Bear in mind that power transmission between
the engine and the transmission is interrupted
when the engine is switched off. For this rea-
son, shift the automatic transmission to trans-
mission position j before switching off the
engine when the vehicle is stationary. Apply
the parking brake to prevent the vehicle from
rolling away. DIRECT SELECT lever
Overview of the transmission shift
system j
Park position with parking lock
k Reverse gear
i Neutral
h Drive
The DIRECT SELECT lever is on the right of the
steering column.
The DIRECT SELECT lever always returns to its
original position. The display in the instrument cluster shows the current transmission posi-
tion j, k, i or h (Y page

132).
Selecting transmission positions !
If the engine speed is too high or the vehi-
cle is coasting, do not shift the automatic
transmission directly from h to k, from
k to h or directly to j. Otherwise, the
automatic transmission may be damaged.
! Only move the automatic transmission to
k when the vehicle is stationary.
X If park position j is selected, depress the
brake pedal to change the transmission
position.
X Drive position h: push the DIRECT
SELECT lever down beyond the 1st point of
resistance.
X Reverse gear k: push the DIRECT SELECT
lever upwards beyond the 1st point of
resistance.
X Neutral i: push the DIRECT SELECT lever
up or down as far as the 1st point of resist-
ance.
i When you switch off the engine, the auto-
matic transmission automatically shifts into
neutral i.
X Park position j: push the button of the
DIRECT SELECT lever in the direction of the
arrow j.
Park position j is engaged automatically in
the following situations:
R if you pull out the key.
R if you open the driver's door when the vehi-
cle is stationary or when driving at a very
low speed and the transmission is in posi-
tion h or k.
To maneuver with an open driver's door, open
the driver's door while stationary and engage
transmission position h or k again.
If you want the automatic transmission to
remain in neutral i after you switch off the
engine, you must leave the key in the ignition
lock. Automatic transmission
131
Driving and parking Z

Transmission positions
B Park position
This prevents the vehicle from roll-
ing away when stopped. Only shift
the transmission to
j when the
vehicle is stationary.
The automatic transmission shifts
to j automatically in the following
situations:
R if you pull out the key.
R if you open the driver's door
when the vehicle is stationary or
when driving at a very low speed
and the transmission is in posi-
tion h or k.
The parking lock should not be used
as a brake when parking. Always
apply the parking brake as well
once you have parked the vehicle. C Reverse gear
Only shift the transmission to
k
when the vehicle is stationary. A Neutral
No power is transmitted from the
engine to the drive wheels. Releas-
ing the brakes will allow you to
move the vehicle freely, e.g. by
pushing or towing.
If ESP
®
is deactivated or faulty: shift
the transmission to position i if
the vehicle is in danger of skidding,
e.g. on icy roads.
When you switch off the engine, the
automatic transmission automati-
cally shifts into neutral i.
! When the engine is switched
off, rolling in idle i can damage
the power transmission and
result in transmission damage. 7 Drive
The automatic transmission
changes gear itself. All forward
gears are available.
You can influence gearshifts with
your choice of drive program. You
can also restrict the shift range. Transmission position and drive pro-
gram display
:
Drive program
; Current transmission position or
current gear in drive program M
= Shift range, if restricted
The transmission positions and current drive
program : are shown at the bottom of the
instrument cluster display. The current trans-
mission position is highlighted.
In drive program M, the transmission position
indicator shows the current gear in position D
( Y page
135).
If you restrict the shift range, the transmission
position indicator shows the current transmis-
sion position plus restricted shift range =,
e.g. D2 ( Y page 133).
The arrows in the transmission position display
show how and into which transmission posi-
tions you can change using the DIRECT
SELECT lever. Changing gear
The automatic transmission adapts to your
individual driving style by continuously adjust-
ing its shift points. These shift point adjust-
ments take into account the current operating
and driving conditions. If the operating or driv-
ing conditions change, the automatic transmis-
sion reacts by adjusting the gearshift program.
When the automatic transmission is in trans-
mission position h, it shifts the individual
gears automatically.
This depends on the following factors:
R the drive program selected ( Y page 134)
R any restriction in the shift range
(Y page

133)
R the position of the accelerator pedal
R the road speed
You can also change gear manually if you
select drive program M (Y page 135).132
Automatic transmission
Driving and parking

Shift ranges
:
To shift down and restrict the shift range
; To shift up and derestrict the shift range
In transmission position h and drive pro-
grams E and C, you can use the steering wheel
paddle shifters to change gear yourself and
restrict or derestrict the shift range of the
automatic transmission.
X To shift down and restrict the shift
range:
briefly pull left steering wheel paddle
shifter :.
The automatic transmission shifts to the
next gear down, depending on the gear cur-
rently engaged. The shift range is also
restricted.
The transmission position indicator also
shows the set shift range, e.g. D2. The auto-
matic transmission shifts only as far as the
relevant gear.
or X Pull and hold left steering wheel paddle
shifter :.
The automatic transmission will shift to a
range which allows easy acceleration and
deceleration. To do this, the automatic
transmission shifts down one or more gears
and restricts the shift range.
The transmission position indicator also
shows the set shift range, e.g. D2. The auto-
matic transmission shifts only as far as the
relevant gear.
The automatic transmission does not shift
down if you pull the left steering wheel pad-
dle shifter whilst traveling at too high a
speed. If the maximum engine speed for the
restricted shift range is reached and you
continue to depress the accelerator pedal,
the automatic transmission will shift up
automatically. This protects the engine from
overrevving. X
To shift up and extend the shift range:
briefly pull right steering wheel paddle
shifter
;.
The automatic transmission shifts to the
next gear up, depending on the gear cur-
rently engaged. This derestricts the shift
range at the same time.
If the display shows only transmission posi-
tion h, the shift range restriction is can-
celed.
X To derestrict the shift range: pull and hold
right steering wheel paddle shifter ;.
The automatic transmission shifts up one or
more gears depending on the gear currently
engaged. At the same time, the shift range
restriction is canceled and the display
shows transmission position D .
Shift ranges and driving situations =
Use the engine's braking effect.
5
Use the braking effect of the engine
on steep downhill gradients and for
driving:
R on steep mountain roads
R in mountainous terrain
R in arduous conditions 4
Use the braking effect of the engine
on extremely steep downhill gradi-
ents and long downhill stretches.
Drive programs
General notes You can use the program selector button to
choose between different drive programs for
the automatic transmission, depending on the
engine. Engine management and the gearshift-
ing characteristics of the automatic transmis-
sion change depending on which drive pro-
gram is selected. Thus, a more comfort-orien-
ted, a more economical, or a sportier driving
style is supported, depending on the wish of
the driver. Selecting drive program M deacti-
vates automatic gearshifting, requiring that
you change gear manually.
After the engine is started, the automatic
transmission automatically switches to drive
program C (Comfort) for a comfortable and
economical driving style. Automatic transmission
133Driving and parking Z

Program selector button
X
Press the É program selector button
repeatedly until the desired drive program is
selected.
The display shows the letter of the selected
drive program at the top of the transmission
position indicator (Y page
132).M Manual Manual gearshifting
C Comfort Comfortable, economical
driving style
E Eco Particularly economical
driving style
Drive program (M)
The Manual drive program is characterized by
the following:
R The automatic transmission must be shifted
manually at all times. the automatic trans-
mission does not shift up automatically even
when the maximum engine speed is reached
(Y page

135).
Drive program S Drive program Sport
has the following charac-
teristics:
R The vehicle exhibits sporty handling charac-
teristics.
R The automatic transmission shifts up at a
later point and shifts down earlier. These
automatic transmission shift points may
increase fuel consumption. Drive program C Drive program Comfort has the following
characteristics:
R
The vehicle delivers comfortable, economi-
cal handling characteristics.
R Optimal fuel consumption resulting from the
automatic transmission shifting up sooner.
R Increased sensitivity. This improves driving
stability on slippery road surfaces, for exam-
ple.
R The automatic transmission shifts up
sooner. The vehicle thus maintains lower
engine speeds.
Drive program E Drive program Eco
has the following charac-
teristics:
R The vehicle exhibits particularly economical
handling characteristics.
R The maximum available engine torque is
reduced.
R Optimal fuel consumption resulting from the
automatic transmission shifting down signif-
icantly later and up significantly sooner,
even at full-load operation.
No shift point adjustment for adapting to
individual, dynamic driving styles.
In kickdown, the automatic transmission
automatically shifts to drive program C.
R Increased sensitivity. This improves driving
stability on slippery road surfaces, for exam-
ple. Driving tips
Accelerator pedal position Your style of driving influences how the auto-
matic transmission shifts gear:
R little throttle: early upshifts
R lots of throttle: later upshifts134
Automatic transmission
Driving and parking

Kickdown
Use kickdown for maximum acceleration:
X Depress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to the
next gear down, depending on the engine
speed.
X Ease off on the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts up again.
Rocking the vehicle free At speeds up to 5 mph (9 km/h) you can
switch back and forth between drive position
h and reverse gear
k without applying the
brakes. This helps when rocking the vehicle
out of snow or slush.
X Push the DIRECT SELECT lever alternately
up and down beyond the first point of resist-
ance.
Towing a trailer X
Depending on the downhill gradient, limit
the shift range
(Y page 133) or shift man-
ually into a lower gear (Y page 135) in which the engine will operate in the middle
of the engine speed range. This also applies
if cruise control is activated. Manual gearshifting
General notes If you select drive program
M, automatic gear-
shifting is deactivated and manual gearshifting
is automatically activated. You must then per-
manently change gear yourself for as long as
the drive program is selected.
Permanent manual gearshifting is deactivated
automatically when you switch from drive pro-
gram M to another drive program. The auto-
matic transmission then shifts gears automati-
cally. The display shows the selected drive
program and transmission position h again. Shifting gears
:
To shift down
; To shift up
The drive program display shows M and the
transmission position indicator shows the
selected gear.
X To shift up: briefly pull right-hand steering
wheel paddle shifter ;.
If the engine speed is sufficient, the auto-
matic transmission shifts up to the next
gear.
If the maximum engine speed is reached in
the currently engaged gear and you con-
tinue to accelerate, the automatic transmis-
sion will not shift up automatically. Always
make sure that the engine speed does not
reach the red area of the tachometer.
Observe the gearshift recommendation in
the display

(Y page 136). When the engine
reaches its maximum speed, the fuel supply
is cut to prevent the engine from overrev-
ving.
X To shift down: pull briefly on left-hand
steering wheel paddle shifter :.
Provided that the engine will not exceed its
maximum speed when shifting down, the
automatic transmission shifts down to the
next gear.
or
X Pull the left-hand steering wheel paddle
shifter until the automatic transmission
selects the optimum gear for the current
speed.
i When coasting, the automatic transmis-
sion shifts down automatically. Automatic transmission
135
Driving and parking Z

Gearshift recommendation
:
Gearshift direction
; Recommended gear The gearshift recommendations assist you in
adopting an economical driving style.
X When the display shows the gearshift rec-
ommendation, shift to recommended
gear ;. Problems with the transmission
Problem
Possible causes/consequences and
M SolutionsThe transmission is
locked in position j. The vehicle electronics are malfunctioning.
X Have the vehicle electronics checked immediately at a qualified
specialist workshop. The acceleration char-
acteristics have deterio-
rated noticeably.
The transmission does
not shift. The transmission is in emergency mode.
It is only possible to shift into second gear or reverse gear
R.
X Have the transmission checked immediately at a qualified spe-
cialist workshop.
X Stop the vehicle.
X Move the selector lever to j.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Depress the brake pedal.
X Move selector lever to h or k.
X Have the transmission checked immediately at a qualified spe-
cialist workshop. Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. Improper handling
of fuel creates a risk of fire and explosion.
Avoid fire, open flames, smoking and creat-
ing sparks under all circumstances. Switch
off the engine and, if applicable, the auxiliary
heating before refueling. G
WARNING
Fuels are toxic and harmful to health. There
is a risk of injury.
You must avoid fuels coming into contact
with skin, eyes and clothes or being swal-
lowed.
Do not inhale the fuel vapors. Keep children
away from fuels.
Keep doors and windows closed during the
refueling process. 136
RefuelingDriving and parking

Problems with the fuel and fuel tank
If your vehicle is losing fuel, the fuel lines or
the fuel tank are defective. X Turn the key immediately to position 0 in
the ignition lock and remove it.
X Do not restart the engine under any circum-
stances.
X Consult a qualified specialist workshop. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact
with hot parts of the exhaust system or
exhaust gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the
vehicle which are hot. Take particular care
not to park on dry grassland or harvested
grain fields. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R release the parking brake.
R shift the automatic transmission out of
the parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle. G
WARNING
If you park the vehicle with the transmission
in park position j and the parking brake is
not engaged, the vehicle may roll away.
Engaging park position j is not a fully ade- quate replacement for the parking brake.
There is a risk of accident and injury.
Secure the vehicle against rolling away as
described below.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its
drivetrain could be damaged.
! When the vehicle is parked, always remove
the key to prevent the battery from becom-
ing discharged.
Always park your vehicle safely and secure it
against rolling away. When parking, observe
the legal requirements of the country in which
you are currently driving.
Observe the following to ensure that the vehi-
cle is secured correctly to prevent it from roll-
ing away unintentionally: R the parking brake is applied.
R the transmission is in position j and the
key has been removed.
R on uphill or downhill gradients, the front
wheels are turned towards the curb. Parking brake
G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R release the parking brake.
R shift the automatic transmission out of
the parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle. G
WARNING
If you must brake the vehicle with the park-
ing brake, the braking distance is considera-
bly longer and the wheels could lock. There 138
ParkingDriving and parking