Thermotronic
Malfunction indicator lamp ............234
Third brake lamp
Display message ............................ 226
Tightening torque .............................. 271
Time Setting (on-board computer) .......... 104
Setting the time (on-board com-
puter) ............................................. 104
TIREFIT kit
Using ............................................. 263
TopTether ............................................. 48
Total distance recorder ....................100
Tow-away protection ..........................55
Switching on/off (on-board com-
puter) ............................................. 109
Towing ................................................ 279
Towing eye Fitting ............................................ 278
Removing ....................................... 279
Trailer
7-pin connector ............................. 199
Coupling up .................................. 195
Decoupling ..................................... 196
Display message .................... 225, 226
Power supply ................................. 199
Trailer coupling
see Trailer tow hitch
Trailer loads
Technical data ............................... 298
Trailer tow hitch ................................ 193
Cleaning ......................................... 203
Trailer towing
Driving tips .................................... 196
ESP ®
................................................ 51
Malfunction ................................... .248
Mounting dimensions ....................297
Parktroni c...................................... 135
Transmission
Display message ............................ 216
Transmission output (maximum)
Telephone/two-way radio ..............285
Transmission positions ....................... 93
Transport (vehicle) ............................279
Travelling uphill ................................. 190
Trim strips Cleaning ......................................... 205 Trip computer
Menu (on-board computer) ............110
Trip computer (on-board com-
puter) ................................................. .110
Trip meter ............................................ 99
Resetting (on-board computer) ......110
Turn signal lamps
Display message ............................ 226
TV
Operating (on-board computer) .....101
Two-way radio
Installation ..................................... 285
Type identification plate
see vehicle identification plate ......286
Tyre
Direction of rotatio n...................... 180
Tyre grip ............................................. 188
Tyre pressure ................................... .180
Calling up (on-board computer) ....183
Display message ...........217, 218, 229
Tyre pressure loss warning system
............................................................ 182
Tyre pressure monitor
Warning lamp ................................. 237
Tyres
General notes ................................ 179
Technical data ....................... 296, 297
Tyre tread .......................................... .180 U
Unlocking Emergency unlocking ..................... 250
From the inside (central unlocking
button) ............................................. 59 V
Vanity mirror Sun visor ........................................ 162
Variable Speedtronic ........................126
Vehicle Emergency unlocking ............250, 251
Individual settings (on-board com-
puter) ............................................. 103
Leaving parked up .........................249
Towing ........................................... 279
Transporting .................................. 279 Index
15 X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1
2009-03-31T14:14:58+02:00 - Seite 15Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:16:30; WK
Vehicle battery
.................................. 272
Vehicle dimensions ...........................295
Vehicle electronics ...........................284
Vehicle identification number
(VIN) .................................................. 286
Vehicle identification plate ..............286
Vehicle level Display mes-
sage.............................................. 221, 222
Vehicle tool kit .................................. 209W
Warning and indicator lamps ABS (yellow) ................................... 235
ESP ®
........................................ 51, 236
LIM (cruise control) ........................ 118
LIM (Distronic) ............................... 121
LIM (variable Speedtronic) .............126
Malfunction indicator lamp ............234
Tyre pressure monitor ...................237
Warning tone ..................................... 239
Warning triangle ................................ 208
Washer fluid Display message ............................ 232
Washer fluid reservoir ..............178, 291
Filling capacity ............................... 291
Wearing seat belts .............................. 75
Wheel bolts Tightening torque ........................... 271
Wheel chock
Use ................................................ 268
Wheels
Cleaning ......................................... 202
General notes ................................ 179
Interchanging ................................. 184
Technical data ....................... 296, 297
Windowbag .......................................... 39
Windows Cleaning ......................................... 202
see Side windows
Windscreen
Infrared reflective .......................... 168
Windscreen washer fluid ..................291
Topping up ..................................... 178
Windscreen washer system .....178, 291 Windscreen wipers
.............................84
Malfunction ................................... .245
Replacing the wiper blades ............261
Winter diesel ..................................... 174
Winter driving ............................ 185, 186
Winter tyres ....................................... 185
Limiting the speed (on-board com-
puter) ............................................. 128
Wiper blades
Cleaning ......................................... 202
Replacing ....................................... 261
Wooden trim
Cleaning ......................................... 205 16
Index X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 16Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:16:30; WK
X
To unlock: press button :.
X To lock: press button ;.
Automatic locking The vehicle will lock automatically once you
have pulled away.
You can switch the automatic locking func-
tion on and off using the on-board computer
(Y page 107).
i The vehicle is locked automatically when
the ignition is switched on and the wheels
begin to turn. There is a risk of being locked
out when the vehicle is being pushed or
tested on a dynamometer. Tailgate
Points to remember
G
Risk of poisoning
Exhaust fumes could enter the vehicle interior
if the engine is running and the tailgate is
open. This could poison you. Therefore, you
should make sure that the tailgate is always
closed when the engine is running.
! The tailgate swings up and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and
behind the tailgate.
Do not leave the key in the luggage compart-
ment. Otherwise, you could lock yourself out.
On vehicles with a spare wheel bracket*, you
can only open the tailgate after first opening
the spare wheel bracket* completely.
i You will find details of the tailgate opening
dimensions in the Technical data section
(Y page 295). The tailgate can be:
R
opened and closed manually
(Y page 61)
R opened and closed* automatically from
outside (Y page 62)
R opened and closed* automatically from
inside (Y page 62) Spare wheel bracket*
G
Risk of accident
While the spare wheel bracket is folded to the
side, the tail lamps may be blocked from view.
Other road users may then fail to see you and
crash into your vehicle. Additionally, secure
your vehicle using a warning lamp or a warn-
ing triangle.
Do not drive with the spare wheel bracket fol-
ded out.
Make sure that the spare wheel bracket is
closed correctly.
Otherwise, the freely moving spare wheel
bracket could injure people or cause an acci-
dent.
! Do not wash vehicles equipped with a
spare wheel bracket in an automatic car
wash.
Opening the spare wheel bracket 60
TailgateControls
* optional
X164_AKB; 2; 3, en-GB
wobuchh
,V ersion: 2.11.8.1
2009-03-31T14:14:58+02:00 - Seite 60
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:16:52; WK
board computer refer to those measured at
sea level. At high altitudes, the tyre pres-
sure values indicated by a pressure gauge
are higher than those shown by the on-
board computer. In this case, do not reduce
the tyre pressures.
i After a teach-in period, the tyre pressure
monitor automatically recognises new
wheels or new sensors. As long as a clear
allocation of the tyre pressure values to the
individual wheels is not possible, the dis-
play message Tyre pressure monitor
active is shown instead of the tyre pres-
sure display. The tyre pressures are already
being monitored.
Restarting the tyre pressure monitor When you restart the tyre pressure monitor,
all existing warning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tyre pressures as the speci-
fied values for monitoring.
In most cases, the tyre pressure monitor will
automatically detect the new reference val-
ues, e.g. if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
i You will find the menu overview on
(Y page 99).
If you wish to define the new reference values
manually:
X Use the table on the inside of the fuel filler
flap to ensure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Also observe the notes in the section on
tyre pressures (Y page 180).
X Make sure that the key is in position 2in
the ignition lock.
X Press the &or* button to select the
Tyre pressure function or wait until the
following message appears: X
Press the reset button on the instrument
cluster (Y page 25).
The multi-function display shows the mes-
sage:
Restart tyre pressure monitor?
Yes Cancel
X Press the Wbutton.
The multi-function display shows the mes-
sage:
Tyre pressure monitor restarted
The tyre pressure monitor has stored the
pressure of the tyres as a new reference
value.
Cancelling the restart X
Press the Xbutton.
Other messages in the multi-function
display If in multi-function display the following mes-
sage appears:
Please correct tyre pressures
X
Check the tyre pressure on all four wheels
and correct it if necessary.
i If the wheel positions on the vehicle are
interchanged, the tyre pressures may be
displayed for the wrong positions for a
short time. This is rectified after a few
minutes of driving, and the tyre pressures
are displayed for the correct positions. Interchanging the wheels
G
Risk of accident
Interchange the front and rear wheels only if
they have the same dimensions: for example
size, offset, etc.
After a wheel is changed, have the tightening
torque checked at a specialist workshop that
has the necessary specialist knowledge and
tools to carry out the work required.
Mercedes-Benz recommends that you use a 184
Tyres and wheelsOperation
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 184
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:17:48; WK
You will find the values approved by the man-
ufacturer on the vehicle identification plates
and those for the towing vehicle in the "Tech-
nical data" section.
You will find installation dimensions and loads
in the "Technical data" section
(Y page 297).
The maximum drawbar load of the trailer
drawbar on the ball coupling is 140 kg. How-
ever, the actual noseweight must not exceed
the value given on the trailer coupling or
trailer identification plates. The lowest weight
applies.
! Use a noseweight as close as possible to
the maximum permissible noseweight. Do
not use a noseweight of less than 50 kg,
otherwise the trailer may come loose.
Bear in mind that the payload and the rear
axle load are reduced by the actual nose-
weight.
When towing a trailer, where possible set the
tyre pressures for the permissible gross
weight which you find in the table on the
inside of your vehicle's fuel filler flap (higher
values).
Driving tips i
Observe the notes on ESP ®
trailer stabi-
lisation (Y page 51).
In Germany, the maximum permissible speed
for vehicle/trailer combinations depends on
the type of trailer and is either 80 km/h or
100 km/h. Before beginning the journey,
check the trailer's documents to see what the
maximum permitted speed is. G
Risk of accident
Always observe the maximum speed permit-
ted in Germany for vehicle/trailer combina-
tions, even in countries where higher speeds
are permitted. This lowers the risk of an acci-
dent. When towing a trailer, your vehicle's handling
characteristics will be different in comparison
to when driving without a trailer.
The vehicle/trailer combination:
R is heavier
R is restricted in its acceleration and gradi-
ent-climbing capability
R has an increased braking distance
R is affected more by strong crosswinds
R demands more sensitive steering
R consumes more fuel
On long and steep downhill gradients, you
must select shift range 1,2or 3in good time.
i This also applies if you have activated
cruise control, Distronic* or Speedtronic.
This will use the braking effect of the engine,
so less braking will be required to maintain
the speed. This relieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly. If you need
additional braking, depress the brake pedal
repeatedly rather than continuously. G
Risk of accident
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely.
Driving tips
R Maintain a greater distance from the vehi-
cle in front than when driving without a
trailer.
R Avoid braking abruptly. If possible, brake
gently at first to allow the trailer to run on.
Then, increase the braking force rapidly.
R The values given for gradient-climbing
capabilities from a standstill refer to sea
level. When driving in mountainous areas,
note that the power output of the engine,
and consequently the vehicle's gradient- Trailer towing*
197Operation
* optional
X164_AKB; 2; 3, en-GB
wobuchh
,V ersion: 2.11.8.1
2009-03-31T14:14:58+02:00 - Seite 197 Z
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:17:52; WK
Changing a wheel and fitting the
spare wheel G
Risk of accident
The wheel dimensions and tyre size of the
"Minispare" emergency spare wheel *may dif-
fer from those of the damaged wheel.
Your vehicle's handling characteristics will
change when a "Minispare" emergency spare
wheel* is fitted. Adapt your style of driving
accordingly.
The "Minispare" emergency spare wheel*
may only be used for a short time. Do not
exceed the maximum speed of 80 km/h and
do not deactivate ESP ®
.
Never drive the vehicle with more than one
"Minispare" emergency spare wheel* fitted. G
Risk of accident
Have the "Minispare" emergency spare
wheel* or the spare wheel* replaced with a
new wheel as soon as possible at a qualified
specialist workshop which has the necessary
specialist knowledge and tools to carry out
the work required. Mercedes-Benz recom-
mends that you use a Mercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified spe-
cialist workshop.
Preparing the vehicle X
Prepare the vehicle as described
(Y page 262).
X If a trailer is coupled, uncouple it.
X Place the wheels in the straight-ahead posi-
tion.
X Remove the following items from the stow-
age well under the luggage compartment
floor:
R the wheel wrench
R the folding wheel chock
R the jack Use the folding wheel chock to prevent the
vehicle from rolling away.
X
Fold both plates :upwards.
X Fold out lower plate ;.
X Guide the lugs on the lower plate fully into
openings in base plate =. Securing the vehicle on level ground
X
On level ground: place the folding wheel
chock or similar under the wheel that is
diagonally opposite to the wheel you wish
to change. Securing the vehicle on slight downhill gradients268
Flat tyrePractical advice
* optional
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 268
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:11; WK
Notes on the technical data
.............284
Genuine Mercedes-Benz parts .........284
Vehicle electronics ...........................284
Vehicle identification plates ............286
Service products and capacities .....287
Vehicle data, GL 450 4MATIC ..........292
Vehicle data, GL 500 4MATIC ..........292
Vehicle data, GL 350 CDI 4MATIC
BlueEFFICIENCY ................................ 293
Vehicle data, GL 350 BlueTEC .........293
Vehicle data, GL 450 CDI 4MATIC ...294
Tailgate opening dimensions ...........295
Tyres and wheels .............................. 295
Trailer coupling* ............................... 297
Frequencies for garage door open-
ers* .................................................... 298 283Technical data
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1 2009-03-31T14:14:58+02:00 - Seite 283
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:22; WK
Vehicle data, GL 450 4MATIC
Vehicle dimensions
Vehicle length
(ECE)
5099 mm
Vehicle width
including exterior
mirrors
2124 mm
Minimum vehicle
height
38 1840 mm
Maximum vehicle
height
38 1950 mm
Minimum ground
clearance
38 202 mm
Maximum ground
clearance
38 307 mm
Ground clearance
when the suspen-
sion is set to High-
way level
38 217 mm
Wheel base
3075 mm
Vehicle weights
Unladen weight
(in accordance
with EC directive)
2430 kg
The unladen weight includes the driver
(68 kg), luggage (7 kg) and all fluids (fuel
tank 90% full). Items of optional equipment
increase the unladen weight and reduce the
maximum payload. Maximum roof
load
90 kg
You will find weight information specific to
the vehicle on the vehicle identification
plate (Y page 286). Vehicle data, GL 500 4MATIC
Vehicle dimensions
Vehicle length
(ECE)
5099 mm
Vehicle width
including exterior
mirrors 2124 mm
Minimum vehicle
height 39 1840 mm
Maximum vehicle
height
39 1950 mm
Minimum ground
clearance
39 202 mm
Maximum ground
clearance
39 307 mm
Ground clearance
when the suspen-
sion is set to High-
way level 39 217 mm
Wheel base
3075 mm
Vehicle weights
Unladen weight
(in accordance
with EC directive) 2445 kg
The unladen weight includes the driver
(68 kg), luggage (7 kg) and all fluids (fuel
tank 90% full). Items of optional equipment
increase the unladen weight and reduce the
maximum payload.
Maximum roof
load 90 kg
You will find weight information specific to
the vehicle on the vehicle identification
plate (Y page 286). 38
The value stated may vary due to the tyres fitted and the state of the suspension system.
39 The value stated may vary due to the tyres fitted and the state of the suspension system. 292
Vehicle data, GL 500 4MATICTechnical data
X164_AKB; 2; 3, en-GB
wobuchh,
Version: 2.11.8.1
2009-03-31T14:14:58+02:00 - Seite 292
Dateiname: 6515431202_buchblock.pdf; erzeugt am 01. Apr 2009 00:18:25; WK