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47 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Adjust the head restraint angle by hand. Push or pull
the head restraint in direction of arrow.
For notes on inside rear view mirrors adjustment, see
page 79;
For exterior rear view mirrors adjustment, see page 80
and for steering wheel adjustment, see page 78.Synchronizing head restraints and
seat adjustment fore, aft
If the power supply was interrupted (battery
disconnected or empty), the head restraints and the seat
adjustment fore, aft are no longer adjusted
automatically.
To resynchronize the adjustment feature, turn
electronic key in starter switch to position 2, move the
seat completely forward and the head restraint fully
down.
To recall the desired seat position push and hold
position button (2 ) un til t he ad justm ent has stop ped , see
page 48 for notes on the memory function.
Caution!
Do not remove head restraints except when mounting
seat covers. For removal refer to head restraints, front
on page 51. Whenever restraints have been removed be
sure to reinstall them before driving.
P91.10-2360-26
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Page 52 of 385

49 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Storing positions into memory:
With the electronic key in starter switch position 1 or 2
or with the relevant door open and the electronic key
inserted in the starter switch.
Adjust the seat to the desired position, see page 46.
Driver’s seat:
You can also adjust the steering wheel and the exterior
rear view mirrors electrically for the driver’s seat. See
page 80 for exterior rear view mirror adjustment and
page 78 for steering wheel adjustment.
Push memory button (1), release and push the position
button (2) within 3 seconds.Recalling positions from memory:
To recall a seat / steering wheel / exterior rear view
mirror position, push and hold button (2) to selected
memory position until the adjustment has stopped.
The seat / steering wheel / exterior rear view mirror
movement stops when the button is released.
Caution!
Do not operate the power seats using the memory
button if the backrest is in an excessively reclined
position. Doing so could cause damage to front or rear
seats.
First move backrest to an upright position.
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Page 126 of 385

123 Coolant temperature gauge
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Coolant temperature gauge
Turn the electronic key in starter switch to position 1
or 2.
Call up the trip odometer and main odometer by
pressing button è or ÿ on the multifunction
steering wheel. See page 94.
Press button j or k until the coolant
temperature gauge appears.During severe operating conditions and stop-and-go city
traffic or uphill driving, the coolant temperature may
rise close to 120
°C.
The engine should not be operated with the coolant
temperature above 120
°C. Doing so may cause serious
engine damage which is not covered by the
Mercedes-Benz Limited Warranty.
Note:
Excessive coolant temperatures trigger a warning
message in the multifunction display. See page 281.
0
60
40100
120
140
mph
2080
P54.30-5171-26
Wa r n i n g !
• Driving when your engine is badly overheated
can cause some fluids which may have leaked
into the engine compartment to catch fire. You
could be seriously burned.• Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine if
you see or hear steam coming from it.Turn off the engine, get out of the vehicle and do
not stand near the vehicle until it cools down.
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Page 218 of 385

215 Parking brake
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Parking brake
1Lever
2Button
To a p ply:
Pull the lever (1) up as many notches as possible. When
the electronic key is in starter switch position 2, the
brake warning lampÉ in the instrument cluster
should come on brightly.To r e l e a s e :
Lift the lever (1) up slightly, press the button on the
lever in and move the lever down to the stop. The brake
warning lampÉ in the instrument cluster should go
out.
A warning sounds and the parking brake warning
message appears in the multifunction display
(see page 278), if you start to drive without having
released the parking brake.
Also see brake warning lamp on page 266.
Wa r n i n g !
When leaving the vehicle always remove the
electronic key from the starter switch, and lock the
vehicle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could release the parking brake, which
could result in an accident or serious injury.
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