2009 MERCEDES-BENZ CL COUPE service indicator

Troubleshooting
Points to remember
G
Risk of accident and injury
The operating safety of your vehicle may be affected if service work is carried out incorrectly.
You could lose control of your vehicle and cause an accident. In addition, the safety systems may
no longer be able to protect you or others as they are designed to do.
Always have service work performed at a qualified specialist workshop which has the necessary
specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that
you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety
or on safety-related systems must be carried out at a qualified specialist workshop. Warning and indicator lamps in switches, buttons and exterior mirrors
Problem
Possible causes/consequences and
X
X Solutions The seat ventilation*
has switched itself off
prematurely. The on-board voltage is too low, because too many consumers are
switched on.
X Switch off consumers that are not required, e. g. the reading
lamp or interior lighting. The seat heating has
switched itself off pre-
maturely. The on-board voltage is too low, because too many consumers are
switched on.
X Switch off consumers that are not required, e. g. the reading
lamp or interior lighting. The cooling system
cannot be switched on
using COMAND. Cooling has been deactivated due to a malfunction.
X
Visit a qualified specialist workshop. The rear-window heat-
ing has switched off
prematurely or cannot
be switched on. The on-board voltage is too low, because too many consumers are
switched on.
X Switch off consumers that are not required, e. g. the reading
lamp or interior lighting.
Once the battery is sufficiently charged, the rear window heating
will switch back on automatically. Troubleshooting
349Practical advice
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X
Insert the emergency key element fully into
tailgate lock :.
X Turn the emergency key element anti-
clockwise as far as possible.
The boot is unlocked.
X Turn the emergency key element back and
remove it. Replacing batteries (key, remote con-
trol, etc.) Notes
It is advisable to have the batteries replaced
at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre. G
Risk of poisoning
Batteries contain toxic and caustic substan-
ces. For this reason, keep batteries away from
children.
If a battery is swallowed, consult a doctor
immediately. H
Environmental note
Do not dispose of batteries with the house-
hold rubbish. They contain highly toxic sub-
stances.
Take discharged batteries to a qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre, or to a special collection point
for old batteries. Key
Checking the batteries X
Press the &or% button.
The batteries are in order if the battery
charge indicator lamp lights up briefly.
Changing batteries (key with KEYLESS
GO*) You require two CR 2025 3 V cell batteries.
X
Remove the emergency key element from
the key (Y page 365). X
Insert emergency key element :into the
opening in the key and push in the direction
of the arrow.
Battery tray ;is released.
X Pull battery tray ;out of the key. X
Remove old batteries :from the battery
tray.
X Insert the new batteries beneath the con-
tact spring with the positive pole facing
upwards. Use a lint-free cloth to do so. Replacing batteries (key, remote control, etc.)
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Remote control for entertainment
system*
You require two 1.5 V, AAA batteries.
X
Press lug ;downwards and remove cover
=.
X Remove old batteries A.
X Insert the new batteries. Observe the polar-
ity markings on the batteries and battery
tray :when doing so.
X Place cover =with tabs ?on battery
tray :.
X Press cover =until lug ;snaps into
place. Wireless headphones for entertain-
ment system*
Headphones, left side
You require two 1.5 V, AAA batteries.
X
Lift cover :upwards and open the battery
tray. When doing so, hold the left head-
phone as shown in the illustration to pre-
vent the batteries from falling out.
X Remove the old batteries.
X Insert the new batteries. Observe the polar-
ity markings on the batteries and battery
tray when doing so.
X Fold down cover :and close the battery
tray.
If the batteries have been inserted cor-
rectly, the indicator lamp will light up green
when the headphones are switched on. Changing bulbs
Notes on changing bulbs
i If you need assistance in changing the
bulbs, contact a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required. Mercedes-Benz recommends
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.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure Changing bulbs
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Wear eye protection.
Keep children away.
Observe this Owner's Man-
ual.
H
Environmental note
Do not dispose of batteries in the household
rubbish. Dispose of defective batteries in an
environmentally responsible manner. Take
them to a Mercedes-Benz Service Centre or
to a special collection point for old batteries. G
Risk of injury
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event
of an accident.
To prevent acid burns, observe the following
safety notes when handling batteries:
R do not lean over the battery.
R do not place any metal objects on a battery.
You could otherwise cause a short circuit
and the battery's gas mixture could ignite.
R make sure that you do not create an elec-
trostatic charge, e.g. by wearing synthetic
clothing or as a result of friction on fabrics.
Therefore, you should not pull or slide the
battery over carpets or other synthetic
materials. R
never touch the battery first. To discharge
a possible electrostatic charge, step out of
the vehicle first and touch the bodywork.
R do not wipe the battery using a cloth. The
battery may explode as a result of electro-
static charge or due to flying sparks.
! Before loosening the terminal clamps of
the battery, switch off the engine and
remove the key or, on vehicles with KEY-
LESS GO*, make sure that the ignition is
not switched on. In the instrument cluster,
all of the indicator lamps must be out. Oth-
erwise, you may destroy electronic compo-
nents, such as the alternator.
i Mercedes-Benz recommends that you
have work involving the battery, e.g.
removal, charging and replacement, car-
ried out at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
Installation location of the battery Your vehicle is equipped with a battery in the
engine compartment. It is located on the front
bulkhead under the filter box on the right-
hand side of the vehicle when viewed in the
direction of travel.
Example
:
Negative terminal
; Positive terminal
i Remove the key if you park the vehicle
and do not require any electrical consum- Battery
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