2008 MERCEDES-BENZ GL320 door lock

476 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
FKey Detected
In VehicleA SmartKey with KEYLESS-GO*
left in the vehicle was detected
while trying to lock the vehicle
from the outside.Take the SmartKey with KEYLESS-GO*
out of the vehicle.
Remove KeyYou have forgotten to remove
the SmartKey.Remove the SmartKey from the starter
switch.
You need a new key.There is no additional code avail-
able for SmartKey or SmartKey
with KEYLESS-GO*.Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Key
Does Not Belong to VehicleThe SmartKey or SmartKey with
KEYLESS-GO* in the starter
switch does not belong to the
vehicle.Find the SmartKey or SmartKey with
KEYLESS-GO* that belongs to the vehicle
to operate the vehicle.
Change
Key BatteriesThe batteries in the SmartKey
with KEYLESS-GO* are dis-
charged.Replace the batteries (page 502).
Don’t Forget
Your KeyThis message appears for a
maximum of 60 seconds if the
driver’s door is opened with the
engine shut off and no SmartKey
in the starter switch.
This message is only a reminder.Insert the SmartKey in the starter switch
(
page 42).
or
Take the SmartKey with KEYLESS-GO*
with you when leaving the vehicle.
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496 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO*, open the
driver’s door using the mechanical key.Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
The mechanical key2 comes out.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the
driver’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position1 and hold it there.
Pull the door handle until the locking
knob moves up (
page 120).
The driver’s door is unlocked.
Pull the door handle once more to open
the driver’s door.
iUnlocking the driver’s door with the
mechanical key will trigger the anti-theft alarm
system.
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key
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497 Practical hints
Unlocking/locking in an emergency
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or KEYLESS-GO*, lock the vehi-
cle carrying out the following steps.
Close the front passenger door, the
rear right door and the tailgate.
Open the driver’s door and the rear left
door.
Press the central locking switch on the
driver’s door (
page 128).
The locking knobs of the front passen-
ger door and the rear doors move
down.
If the vehicle battery is disconnected or
drained:
Press down the locking knobs of
the front passenger door and the
rear doors manually.
Exit the vehicle.
Close the driver’s door.
Enter the vehicle through the rear left
door.
Press down the locking knob of the
driver’s door.
Exit the vehicle.
Close the rear left door.
The vehicle is locked.
Fuel filler flap
Open the tailgate (page 122).
The fuel filler flap release is located behind
a cover in the right side trim panel of the
cargo compartment.
1Lock
2Cover
!To prevent inadvertent lockout, make sure
to have the SmartKey or SmartKey with
KEYLESS-GO* with you before proceeding with
the next step. The next step will lock the vehicle.
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap.

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498 Practical hints
Unlocking/locking in an emergency
Insert a suitable object such as a coin
into the slot of lock1 (
page 497).
Turn lock1 counterclockwise by 90°
in direction of arrow.
Remove cover2 (page 497).
3Fuel filler flap release
Pull red fuel filler flap release3 in
direction of arrow.
The fuel filler flap is unlocked.
Open the fuel filler door (page 374).

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535 Practical hints
Battery
Connect the positive lead to the posi-
tive terminal and fasten it’s cover
(
page 533).
Connect the negative lead to the nega-
tive terminal (
page 533).
Charging the battery
If the battery is discharged, the battery can
be charged using the jump-start contacts
located in the engine compartment
(
page 537).
Charge the battery in accordance with
the instructions of the battery charger
manufacturer.
Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
!Never invert the terminal connections!
iThe following procedures must be carried
out following any interruption of battery power
(e.g. due to reconnection):

Set the clock (page 174).
Vehicles with COMAND system with naviga-
tion module*: Time and date are set auto-
matically.

Synchronize the door windows
(
page 249).

Synchronize the power tilt/sliding sunroof*
(
page 253).

Synchronize the power folding exterior rear
view mirrors* (
page 209).
Warning!G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Light Truck
Center for information and availability.
Charge battery in accordance with the
separate instructions for the accessory
battery charger.
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574 Index
Children in the vehicle 91
Air bags 77, 91
Blocking rear door window
operation 98
Indicator lamp, Front passenger front
air bag 85
Infant and child restraint systems 86,
92
LATCH-type child seat anchors 95
Occupant Classification System
(OCS) 81
Cigarette lighter
(Depending on vehicle
configuration) 323
Climate control 214
Air conditioning refrigerant 563
Air conditioning, Cooling 224, 225
Air distribution, Front 219
Air distribution, rear 227
Air recirculation mode 222
Air vents*, second-row seats 220
Air vents, Front 220
Air volume 220
Control panel*, Rear 226
Control panel, Front 216
Deactivating system 218Defogging 222
Defrosting 221
Rear window defroster 212
Residual engine heat (REST) 225
Clock 27, 174
Cloth upholstery, Cleaning and
care of 434
Cockpit 24
Cockpit Management and Data System
see COMAND System
Cold tire inflation pressure 416
Collapsible wheel chock 494
COMAND System see separate operating
instructions
Combination switch 61, 62, 64, 147
Compass 344
Adjustment 178
Calibration 179
Calling up the compass 344
Control and operation of radio
transmitters 370
Control system 155
Multifunction display 155
Multifunction steering wheel 156
Resetting to factory default 169Control system menus 155
AUDIO 164
DISTRONIC* (Canada only) 167
NAV* 166
Off-road 166
Settings 168
Standard display 162
TEL* 186
Trip computer 184
Vehicle configuration 182
Vehicle status message memory 167
Control system submenus 159, 161, 171
Comfort* 181
Instrument cluster 172, 173
Lighting 175
Time/Date 174
Vehicle 178
Coolant 381, 567
Anticorrosion/antifreeze mixing ratio
and quantity 568
Capacities 562
Checking coolant level 376, 381
Messages in the multifunction
display 470, 472
Temperature 372
Temperature display 162
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576 Index
Door
Entry lamps 151
Locking, In an emergency 497
Locking/unlocking,
KEYLESS-GO* 41, 71
Locking/unlocking, SmartKey 40, 70
Messages in the multifunction
display 474
Opening from inside/outside 114,
120
Remote door unlock (Tele Aid) 337
Unlocking, Mechanical key 496
Door control panel 35
Door handle 35
Door windows see Power windows
DOT 410, 416
Downhill driving
Cruise control 257
Downhill Speed Regulation (DSR) 273
Messages in the multifunction
display 467
Drinking and driving 347Driving 53, 347
Abroad 370
Hydroplaning 352
In winter 353, 420
Instructions 53, 347
Problems 65
Safety systems 101
Systems 255
Through standing water 355
Through water 360
Tips 195
With Distronic* 270
Driving off 60
Driving safety systems
4-ETS 107
ABS 101
BAS 103
EBP 107
ESP
®103
Driving systems 255
Adaptive Damping System
(ADS)* 278
Air suspension program 278
Cruise control 255
Distronic* (Canada only) 260Downhill Speed Regulation
(DSR) 273
Off-road driving program (Vehicles
without enhanced off-road
package*) 277
Parktronic system* 288
Rear view camera* 293
Vehicle level control 279
E
Easy-entry/exit feature
Activating (driver’s seat)* 181
For third-row seats 130
Easy-entry/exit feature* 48
EBP 107
Indicator and warning lamps 438,
468
Electrical connections
Trailer 365
Electrical fuses see Fuses
Electrical system, Technical data 559
Electronic Brake Proportioning see EBP
Electronic Stability Program see ESP
®
Electronic Traction System see 4-ETS
Emergency calls
Tele Aid 333
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577 Index
Emergency operation
Fuel filler flap 497
Locking/unlocking the vehicle 496,
497
Emergency operation
(Limp-Home Mode) 200
Emergency operations
Exit for third-row seats 132
Remote door unlock, Tele Aid 337
Tailgate, Opening from the inside
manually 122
Emergency Tensioning Device see ETD
Emergency, In case of
Battery, Jump starting 536
Engine shut-down 545
First aid kit 490
Flat tire 519
Fuses 543
Hazard warning flasher 149
Instrument cluster, Indicator
lamps 436, 437, 438, 439, 440,
441, 442, 443, 444, 446
Roadside Assistance 12, 335
Towing the vehicle 538Emission control 372
Information label 551
System warranties 10
Engine
Belt layout (GL 450, GL 550) 552
Belt layout (GL 320 CDI) 552
Break-in recommendations 380
Cleaning 427
Compartment 378
Emergency engine shut-down 545
Malfunction indicator lamp 29
Maximum engine speed 153, 553
Number 551
Starting 56
Starting with KEYLESS-GO* 57
Starting with the SmartKey 57
Tachometer 29, 153
Technical data 553
Turning off with KEYLESS-GO* 69
Turning off with the SmartKey 69Engine coolant see Coolant
Engine oil 380, 564
Adding 381, 564
Additives 564
Changing 381, 564
Checking level 380
Checking with the oil dipstick 380
Consumption 380
Filler neck 381
Recommended engine oils and oil
filters 564
Enhanced Off-road Package*
Vehicle level control 283
ESP
®27, 103
Four wheel electronic traction system
with ESP
®103
Messages in the multifunction
display 457, 458
Off-road-ESP
®106
Warning lamp 27, 441
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