2008 MERCEDES-BENZ SL55AMG roof

389 Practical hints
What to do if …
Left displayRight displayPossible cause/consequencePossible solution
AFuel Cap
OpenA loss of pressure has been detect-
ed in the fuel system. The fuel cap
may not be closed properly or the
fuel system may be leaky.Check the fuel cap (page 279).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an autho-
rized Mercedes-Benz Center.
KRetract. Roof Oper.
Please Wait
See Oper. Manual
The on-board voltage is too low.Start the engine.
The hardtop drive system was shut
down for safety reasons after multi-
ple, consecutive attempts to raise
or lower the hardtop.After about 10 minutes you can open or close the
retractable hardtop.
Switch on the ignition (page 40).
Repeat the opening or closing procedure.
Retractable Roof
LoweringThe retractable hardtop is not com-
pletely opened or closed. The roof
hydraulics will start to lose pres-
sure.Make sure the retractable hardtop is com-
pletely opened or closed (
page 204).
Retractable Roof
Operation
Only At StandstillYou have attempted to open the re-
tractable hardtop while driving.Stop the vehicle in a safe location and try to
open the hardtop again.

390 Practical hints
What to do if …
Left displayRight displayPossible cause/consequencePossible solution
KRetractable Roof
Not Opened/Closed
CompletelyThe retractable hardtop is not
locked properly.Stop the vehicle in a safe location. Observe
the traffic situation around you.
Push or pull on the retractable hardtop switch
until the indicator lamp in the switch goes out
and the retractable hardtop is completely
open or closed (
page 204).
OYou are driving with the hood open.Risk of accident!
Stop the vehicle in a safe location or as soon
as it is safe to do so.
Close the hood (page 283).
IRemove
KeyYou have forgotten to remove the
SmartKey from the starter switch.Remove the SmartKey from the starter
switch.
Replace
KeyThe SmartKey is no longer
functional.Contact an authorized Mercedes-Benz
Center.
FChange
Key BatteriesThe batteries in the SmartKey with
KEYLESS-GO* are discharged.Replace the batteries (page 407).

428 Practical hints
Batteries
!The factory-equipped VRLA battery is
leak-proofed. Only use a battery as replacement
that has the same security features and is of
identical size, voltage, and capacity as the
factory-equipped battery.
The battery, the battery ventilation and the
lateral plug must always be securely installed
when the vehicle is in operation.
Warning!G
Failure to follow these instructions can
result in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch. Otherwise the
alternator and other electronic components
could be severely damaged.
Have the starter battery checked regularly by an
authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for maintenance
intervals or contact an authorized
Mercedes-Benz Center for further information.
Warning!G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an acci-
dent.
Warning!G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. The same applies if
battery is disconnected. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes are only applied to the
front wheels.
Stopping distance is increased! Adjust your
driving style accordingly. For more informa-
tion, see “Electro-hydraulic brake system”
(
page 94).

478 Index
One-touch gearshifting
Gear selector lever 179
Steering wheel gearshift
control* 180
Ornamental moldings 336
Overdue maintenance service 331
Overhead control panel 33
Overspeed range 142
P
Paintwork code see Certification label
Panic alarm 88
Panic button on SmartKey or SmartKey
with KEYLESS-GO* 88
Panorama roof*
Sunshade 213
Sunshade closing 213
Sunshade opening 213
Parcel net
Passenger footwell 241
Trunk 242
Parking 271
Parking assistance (Parktronic*) 233Parking brake
Engaging 63
Releasing 55
Parking brake pedal 25
Parking lamps 410
Switching on 131
Parktronic* 32, 233
Activating 236
Cleaning system sensors 337
Malfunctioning 236
Minimum distance 235
Range 234
Rear sensors 235
System sensors 337
Warning indicators 25, 235
Parktronic* system deactivation
switch 32
Parts service 442
PASS AIR BAG OFF indicator lamp see
Passenger front air bag off indicator
lamp
Passenger front air bag
Messages in the multifunction
display 368–371
Passenger front air bag off indicator
lamp 78, 357Passenger side
Front air bag 73, 74
Head-thorax air bag 74
Pedals 267
Phone book* 170
Loading 171
Quick search 171
Phone number*
Dialing 170
Redialing 171
Plastic parts, cleaning 339
Poly-V-belt drive
Layout 446
Potential problems associated with under-
inflated and overinflated tires 312
Power assistance 268
Power closing assist for trunk lid 121
Power outlet 246
Power seat
Adjusting backrest tilt 45
Adjusting head restraint height 45
Adjusting head restraint tilt 46
Adjusting seat cushion depth 45
Adjusting seat cushion tilt 45
Adjusting seat height 45