towing MERCEDES-BENZ SLK350 2006 R171 Owner's Manual

Contents
Practical hints................................. 361
What to do if … .................................. 362
Lamps in instrument cluster ........ 362
Lamp in center console................ 367
Vehicle status messages in the
multifunction display .................... 368
Where will I find...? ............................ 388
First aid kit ................................... 388
Vehicle tool kit, vehicle jack......... 388
Spare wheel with collapsible tire.. 391
Spare wheel bolts ........................ 392
Unlocking/locking in an emergency .. 394
Unlocking the vehicle ................... 394
Locking the vehicle ...................... 395
Manually unlocking the gear
selector lever
(automatic transmission*) ........... 396
Opening/closing in an emergency..... 397
Raising retractable hardtop
manually ...................................... 397
Replacing SmartKey batteries ........... 398
SmartKey ..................................... 399Replacing bulbs .................................. 400
Bulbs ............................................. 401
Replacing bulbs for front lamps .... 403
Replacing bulbs for rear lamps ..... 405
Replacing wiper blades....................... 406
Removing wiper blades ................. 406
Installing wiper blades .................. 407
Flat tire ............................................... 408
Preparing the vehicle .................... 408
Sealing tires with TIREFIT.............. 408
Mounting the spare wheel ............ 412
Battery................................................ 421
Disconnecting the battery............. 422
Removing the battery.................... 422
Charging and reinstalling battery .. 423
Reconnecting the battery.............. 423
Jump starting ...................................... 424
Towing the vehicle .............................. 426
Installing towing eye bolt .............. 428
Fuses .................................................. 430
Aids for replacing fuses ................ 430
Main fuse box in passenger
compartment ................................ 431
Fuse box in engine compartment.. 432
Technical data.................................. 433
Parts service ...................................... 434
Warranty coverage ............................. 435
Loss of Service and Warranty
Information Booklet ...................... 435
Identification labels ............................ 436
Layout of poly-V-belt drive.................. 437
SLK 280, SLK 350 ........................ 437
SLK 55 AMG ................................. 437
Engine ................................................ 438
Rims and tires .................................... 439
Same size tires ............................. 441
Mixed size tires ............................. 443
Spare wheel with collapsible tire .. 445
Electrical system ................................ 446
Main Dimensions................................ 447
Weights .............................................. 448

89 Safety and Security
Anti-theft systems
Arming tow-away alarm
Lock your vehicle with the SmartKey.
The tow-away alarm is automatically
armed after about 30 seconds.
Disarming tow-away alarm
To prevent triggering the tow-away alarm,
switch off the tow-away alarm feature be-
fore towing the vehicle, or when parking on
a surface subject to movement, such as a
ferry or auto train.The switch is located on the lower part of
the center console.
1Indicator lamp
2Tow-away alarm deactivation switch

Switch off the ignition (
page 36).

Remove the SmartKey from the starter
switch.

Press tow-away alarm deactivation
switch2.
Indicator lamp1 in the tow-away
alarm deactivation switch comes on
briefly.

Exit your vehicle.

Lock your vehicle with the SmartKey.
The tow-away alarm remains disarmed un-
til you lock your vehicle again.
Canceling tow-away alarm
To cancel the alarm:

Press theŒ or‹button on the
SmartKey.
or

Insert the SmartKey in the starter
switch.
iWhen you unlock your vehicle, the
tow-away protection disarms
automatically. The tow-away alarm
remains disarmed until you lock the
vehicle again.
iYou cannot disarm the tow-away alarm
while the ignition is switched on.

277 Controls in detail
Useful features
Roadside Assistance button•
Located below the center armrest cover is
the Roadside Assistance button•.
Open center armrest cover
(page 266).

Press and hold the button (for longer
than 2 seconds).
A call to a Mercedes-Benz Roadside
Assistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message
Connecting
call
will appear in the multifunction
display and the audio system is muted.
When the connection is established, the
message Call connected
appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and lo-
cation (subject to availability of cellular
and GPS signals).A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established.

Describe the nature of the need for as-
sistance.
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest
Mercedes-Benz Center. For services such
as labor and/or towing, charges may ap-
ply. Refer to the Roadside Assistance man-
ual for more information.
The following is only available in the USA:


Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire with the
vehicle spare tire are obtainable.
iThe indicator lamp in the Roadside
Assistance button• remains illumi-
nated in red for approx. 10 seconds
during the system self-check after
switching on ignition (together with the
SOS button and the Information
button¡).
See “System self-check” (
page 274)
when the indicator lamp does not come
on in red or stays on longer than ap-
proximately 10 seconds.
If the indicator lamp in the Roadside
Assistance button• is flashing con-
tinuously and there was no voice con-
nection to the Response Center
established, then the Tele Aid system
could not initiate a Roadside
Assistance call (e.g. the relevant cellu-
lar phone network was not available).
The message
Call failed
appears in
the multifunction display.

324 OperationTires and wheelsStep 6 (if applicable)
If your vehicle will be towing a trailer,
load from your trailer will be trans-
ferred to your vehicle. Consult this
manual to determine how this reduces
the available cargo and luggage load
capacity of your vehicle (
page 326).
The following table shows examples on
how to calculate total and cargo load
capacities with varying seating configura-
tions and number and size of occupants.
The following examples use a load limit
of 1500 lbs. This is for illustration
purposes only. Make sure you are using
the actual load limit for your vehicle stated
on the vehicle’s placard (
page 321).


326 OperationTires and wheelsCertification label
Even after careful determination of the
combined weight of all occupants, cargo
and the trailer tongue load (if applicable)
(page 326) as to not exceed the permis-
sible load limit, you must make sure that
your vehicle never exceeds the Gross Vehi-
cle Weight Rating (GVWR) and the Gross
Axle Weight Rating (GAWR) for either the
front or rear axle. You can obtain the
GVWR and GAWR from the Certification la-
bel. The Certification Label can be found
on the driver’s door B-pillar (
page 321).Gross Vehicle Weight Rating (GVWR): The
total weight of the vehicle, all occupants,
all cargo, and the trailer tongue load
(
page 326) must never exceed the
GVWR.
Gross Axle Weight Rating (GAWR): The to-
tal allowable weight that can be carried by
a single axle (front or rear).
To assure that your vehicle does not ex-
ceed the maximum permissible weight
limits (GVWR and GAWR for front and rear
axle), have the loaded vehicle (including
driver, passengers and all cargo and, if ap-
plicable, trailer fully loaded) weighed on a
suitable commercial scale.Trailer tongue load
The tongue load of any trailer is an impor-
tant weight to measure because it affects
the load you can carry in your vehicle. If a
trailer is towed, the tongue load must be
added to the weight of all occupants riding
and any cargo you are carrying in the
vehicle. The tongue load typically is ten
percent of the trailer weight and every-
thing loaded in it.
Your Mercedes-Benz has been designed
primarily to carry passengers and their
cargo. Mercedes-Benz does not recom-
mend trailer towing with your vehicle.

361 Practical hints
What to do if …
Where will I find...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses

388 Practical hintsWhere will I find...?First aid kit
The first aid kit is stored in a parcel net
behind the driver’s seat.Vehicle tool kit, vehicle jack
The vehicle tool kit is stored in a storage
compartment under the trunk floor.
The following is included:

Collapsible chock


Vehicle jack


Protective wrap


Alignment bolt


Towing eye bolt


Wheel wrench


Spare fuses


Fuse extractor


Valve extractor


Electric air pump


TIREFIT kit*Removing the vehicle tool kit
Vehicles with spare wheel
1Spare wheel
2Vehicle tool kit (under collapsible tire,
together with wheel bolts for spare
wheel with collapsible tire)
3Retaining screw

Open the trunk (
page 98).

Lift up trunk floor.

Loosen retaining screw3 by turning it
counter-clockwise.

Remove spare wheel1.

Remove vehicle tool kit2.1Collapsible wheel chock
2Vehicle jack
3Protective wrap
4Alignment bolt
5Towing eye bolt
6Wheel wrench
7Spare fuses, fuse extractor and valve
extractor
8Electric air pump

389 Practical hints
Where will I find...?
Vehicles with TIREFIT*
1TIREFIT kit
2Vehicle jack
3Collapsible wheel chock
4Towing eye bolt
5Alignment bolt
6Wheel wrench
7Spare fuses, fuse extractor and valve
extractor
8Electric air pump
Open the trunk (
page 98).

Lift up trunk floor.Vehicle jackThe vehicle jack is located in the storage
compartment underneath the trunk floor.
Storage position
Remove vehicle jack from its
compartment.

Turn crank handle in the direction of
arrow as far as it will go.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use,
especially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket. Al-
ways lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.

426 Practical hintsTowing the vehicleMercedes-Benz recommends that the vehi-
cle be transported with all wheels off the
ground using flatbed or appropriate wheel
lift/dolly equipment.When circumstances do not permit the
recommended towing methods, the vehi-
cle may be towed with all wheels on the
ground or front wheels raised only so far as
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!Vehicles with automatic transmission*:
Do not tow-start vehicle.!Use flatbed or wheel lift/dolly equip-
ment with the SmartKey in the starter
switch in position0.
Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
To prevent damage during transport,
do not tie down vehicle by its chassis or
suspension parts.
Switch off the tow-away alarm
(page 88) and the automatic central
locking (
page 101).
!To be certain to avoid a possibility of
damage to the transmission, however,
we recommend the drive shaft be dis-
connected at the rear axle drive flange
for any towing beyond a short tow to a
nearby garage.
!If the vehicle is towed with the front
axle raised, the engine must be shut off
(SmartKey in starter switch
position0or1). Otherwise, the ESP
®
will immediately be engaged and will
apply the rear wheel brakes.
When towing the vehicle with all wheels
on the ground, the gear selector lever*
must be in positionN (manual trans-
mission: gear shift lever in neutral posi-
tion) and the SmartKey must be in
starter switch position1.
When towing the vehicle with all wheels
on the ground or the front axle raised,
the vehicle may be towed only for dis-
tances up to 30 miles (50 km) and at a
speed not to exceed 30 mph
(50 km/h).

427 Practical hints
Towing the vehicle
Warning!
G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:

the engine will not run


there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
as that will be necessary to adequately con-
trol the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make sure the SmartKey is in
starter switch position2.
If the SmartKey is left in starter switch
position0 for an extended period of time, it
can no longer be turned in the switch. In this
case, the steering is locked. To unlock, re-
move SmartKey from starter switch and re-
insert.
Warning!
G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.iTo signal turns while being towed with
the hazard warning flasher in use,
switch on ignition and activate the
combination switch for the left or right
turn signal in the usual manner – only
the selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, the vehicle doors
lock if the left front wheel as well as the
right rear wheel are turning at vehicle
speeds of approx. 9 mph (15 km/h) or
more.
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 101).
Switch off the tow-away alarm
(
page 88).
The vehicle should only be towed using
a properly installed towing eye bolt.
Never attach a tow cable, tow rope or
tow rod to the vehicle chassis, frame or
suspension parts.