Page 97 of 399

94 Memory function
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.
Driver’s seat:
You can also adjust the steering wheel and the exterior 
mirrors electrically for the driver’s seat. See page 90 for 
exterior rear view mirror adjustment and page 88 for 
steering wheel adjustment.
Turn button (2) to selected memory position.
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, turn button (2) to selected memory 
position and press to recall.
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. 
     
        
        Page 140 of 399

137 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 106.
Press button j or k until the coolant 
temperature gauge appears.During severe operating conditions and stop-and-go city 
traffic, 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 in the 
multifunction display. See page 298.
P54.30-4674-26
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. 
     
        
        Page 187 of 399

184 Audio system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Track selection
Press the track selection 
“TRK” key. The current track 
will be displayed as “SIDE 1” 
or “SIDE 2”. The track will be 
changed automatically at the 
end of the tape.
Track search forward/backward
Press the   button. 
“SEEK FWD” will be shown on 
the display and the track 
search will run the tape 
forward to the start of the next 
track.
Press the   button. 
“SEEK RWD” will be shown 
on the display and the track 
search will run the tape 
backward to the start of the 
track currently playing. Track search can be interrupted 
by pressing the same button again.Note:
The beginning of a track can only be located if there is a 
break of at least 4 seconds between tracks.
Fast forward/reverse
Press the   button. 
“FORWARD” will appear on 
the display and fast forward 
will start.
Press the   button. 
“REWIND” will appear on the 
display and fast reverse will 
start.
Fast forward/reverse is stopped by pressing the same 
button again, or it will stop automatically at the 
beginning or the end of the tape. The track will 
automatically change at the end or beginning of the tape 
and play will begin. 
     
        
        Page 204 of 399

201 Interior equipment
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Opening the panorama sliding / pop-up roof 
automatically
Move the switch past resistance point in direction (1) 
and release. The roof will not open completely. Press 
switch again to open it completely.
Stopping the sliding / pop-up roof: 
Move the switch in any direction. 
If the movement of the panorama sliding / pop-up roof is 
blocked during the closing procedure, the roof will stop 
and reopen slightly.
The panorama sliding/pop-up roof can also be opened 
and closed using the summer opening / convenience 
feature, see page 34.
Notes:
The panorama sliding/pop-up roof can be opened or 
closed manually should an electrical malfunction occur, 
see page 354.
Wa r n i n g !
When closing the panorama sliding / pop-up roof, 
be sure that there is no danger of anyone being 
harmed by the closing procedure.The closing procedure of the panorama sliding/ 
pop- up roof can be immediately reversed by either 
pressing or pulling the switch, or pressing 
buttonŒon the electronic key and holding it.When leaving the vehicle, always remove the 
electronic key from starter switch, and lock your 
vehicle. Do not leave children unattended in the 
vehicle, or with access to an unlocked vehicle. 
Unsupervised use of vehicle equipment can cause 
serious personal injury. 
     
        
        Page 227 of 399

224 Garage door opener
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Canadian programming:
During programming, your hand-held transmitter may 
automatically stop transmitting. Continue to press and 
hold the integrated remote control transmitter button 
(note steps 2 through 4 in the “Programming” portion) 
while you press and re-press (“cycle”) your hand-held 
transmitter every two seconds until the frequency 
signal has been learned. The indicator lamp will flash 
slowly and then rapidly after several seconds upon 
successful training.Operation of remote control:
1. Turn electronic key in starter switch to position 1 
or 2.
2. Select and press the appropriate button to activate 
the remote control device. The integrated remote 
control transmitter continues to send the signal as 
long as the button is pressed – up to 20 seconds.
Erasing the remote control memory:
1. Turn electronic key in starter switch to position 1 
or 2.
2. Simultaneously holding down the left and right side 
buttons for approximately 20 seconds, or until the 
control lamp blink rapidly, will erase the codes of all 
three channels.