2008 MERCEDES-BENZ B-CLASS HATCHBACK brake light

Troubleshooting
226 Problem Possible cause/consequence Suggested solutions
v
The yellow ESP ®
warning
lamp flashes while the
vehicle is in motion. G
Risk of accident
ESP ®
or traction control has
intervened because there is a risk
of skidding or at least one wheel
has started to spin. X
Only depress the accelerator pedal as far as necessary when pull-
ing away.
X Release the accelerator pedal while you are driving.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
. 1
The red SRS warning lamp
is lit while the engine is
running. G
Risk of injury
There is a malfunction in the
restraint system. The airbags or
belt tensioners may either be trig-
gered unintentionally or, in the
event of an accident, not be trig-
gered at all. X
Visit a qualified specialist workshop immediately. 1
The red SRS warning lamp
is lit while the engine is
running. In addition, the
indicator lamp 5
PASSENGER AIRBAG OFF
flashes in the centre con-
sole and a warning tone
sounds. The connector on the removable
front-passenger seat* is
detached. X
Attach the connector to the coupling on the seat ( Ypage 155). H
The red brake system
warning lamp comes on
while you are driving. A
warning tone also sounds. You are driving with the parking
brake applied. X
Release the parking brake.
The warning lamp goes out and the warning tone ceases. Practical advice
* optional
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Troubleshooting
227Problem Possible cause/consequence Suggested solutions
H
The red brake system
warning lamp comes on
while the engine is run-
ning. G
Risk of accident
There is insufficient brake fluid in
the fluid reservoir. X
Pull over and stop the vehicle safely, paying attention to road and
traffic conditions. Do not continue driving under any circumstan-
ces.
X Consult a qualified specialist workshop immediately.
X Observe the additional messages in the multi-function display
(Y page 202).
Do not top up the brake fluid. This will not rectify the fault. ±
The yellow engine diagnos-
tics warning lamp lights up
while the engine is run-
ning. Vehicles with a diesel engine: the
fuel tank has been run dry. X
Start the engine three to four times after refuelling.
Emergency running mode is cancelled. The vehicle need not be
checked. ±
The yellow engine diagnos-
tics warning lamp lights up
while the engine is run-
ning. There may be a fault, for example
R
in the engine management
R in the ignition system
R in the exhaust system
R in the ignition system (for vehi-
cles with petrol engines)
The emission limit values may be
exceeded and the engine can run
in emergency mode. X
Have the vehicle checked as soon as possible at a qualified spe-
cialist workshop. Practical advice
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Troubleshooting
230 Warning tones
Problem Possible cause/consequence Suggested solutions
The anti-theft warning alarm* is
triggered. You have opened the vehicle with
the anti-theft alarm system still
activated*. X
Switch off the alarm (Y page 57).You hear a warning tone. A message appears in the multi-
function display. X
See the explanations for the display message (Y page 202). You are driving with the parking
brake applied. X
Release the parking brake. The light is switched on when you
leave the vehicle. X
Turn the light switch to MorU.
or
X If the rear foglamp is switched on: press the light switch in to the
stop. G
Risk of injury
The driver or front passenger has
not fastened their seat belt X
Fasten your seat belt (Y page 72).Practical advice
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Changing the batteries
243Releasing the parking lock manually
on vehicles with AUTOTRONIC*
In the event of an electrical fault, it is possible
to release the selector lever lock manually to
move it out of position P, e.g. if you wish to
tow the vehicle away. 1
Cup holder
X Apply the parking brake.
X Pull up cup holder 1. Releasing the parking lock manually
1
Screwdriver or similar implement
2 Release pin G
Risk of injury
Release pin 2can become very hot. There-
fore only press the release pin with a suit-
able screwdriver or similar implement; oth-
erwise, you could burn yourself.
X Use implement 1to press release pin 2
and simultaneously move the selector lever
out of position P.
The selector lever can now be moved freely
until it is returned to position P. Changing the batteries
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 sub-
stances. 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
specialist workshop, e.g. a Mercedes-Benz
Service Centre, or to a special collection
point for old batteries. Practical advice
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Changing bulbs
246
Rear bulbs Bulb Type
7
Third brake
lamp LED
8
Turn signal lamp PY 21 W
9
Reversing lamp P 21 W
a
Licence plate
lamp C 5 W
b
Rear foglamp P 21 W
c
Tail lamp P 5 W
d
Brake lamp P 21 W
Before changing bulbs
You can replace the following bulbs:
R
Dipped-beam headlamps (halogen head-
lamps)
R Main-beam headlamps (halogen head-
lamps)
R Side lamp/parking lamp
R Cornering light* (vehicles with bi-xenon
headlamps *)
R Front turn signal lamp R
Brake lamp
R Tail lamp
R Turn signal lamp (rear)
R Licence plate lamp
Observe the following points:
R Use only the bulb types specified here.
R To prevent a short-circuit, switch off the
lights before changing a bulb.
R Only hold bulbs with a clean, lint-free cloth.
R Do not work with wet or greasy fingers.
R If the new bulb still does not light up, con-
sult a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
i Due to the location of the bulbs in the
front headlamps, it is best to have these
changed at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
i Have the headlamp setting checked reg-
ularly at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre. Changing the front bulbs
Removing/fitting the washer fluid res-
ervoir You must remove the washer fluid reservoir
from the engine compartment before you can
replace the bulbs in the front left-hand head-
lamp.
X
To remove: turn retaining screw 1anti-
clockwise.
X Remove washer fluid reservoir 2from
bracket 3.
X Put washer fluid reservoir 2to one side
and leave the lines and hoses connected.
Make sure that no washer fluid escapes.
X To fit: guide the lower retaining lug into the
rubber grommet on the longitudinal mem- Practical advice
* optional
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Changing bulbs
249
Opening
X
Turn release catch 190° in the direction
of the arrow and remove side trim panel
2.
X Left side: remove the first-aid kit.
X Right side: remove the stowage compart-
ment.
Closing
X Left side: insert the first-aid kit.
X Right side: insert the stowage compart-
ment.
X Insert side trim panel 2and turn catch
1 90° in the opposite direction to the
arrow.
Changing the tail lamps X
Switch off the lights.
X Open the luggage compartment.
X Open the side trim panel (Y page 248). Bulb holder
X
Press retaining lugs 1simultaneously in
the direction of the arrow and pull the bulb
holder out. Bulb holder
1
Brake lamp
2 Turn signal lamp
3 Tail lamp
X Lightly press the corresponding bulb into
the holder, turn it anti-clockwise and
remove it from the bulb holder.
X Insert the corresponding new bulb into the
bulb holder and turn it clockwise.
X Attach the bulb holder and press firmly.
The retaining lugs on the bulb holder
engages audibly.
X Close the side trim panel (Y page 248). Practical advice
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Flat tyre
252X
Swivel spraying nozzles 1upwards or
downwards.
X Wipe briefly with washer fluid to test them
(Y page 82).
The spraying nozzles are correctly posi-
tioned if the stream of water hits the wind-
screen approximately in the centre. Flat tyre
Flat tyre equipment variants
Your vehicle may be equipped with:
R a TIREFIT kit (Y page 200)
R a "Minispare" emergency spare
wheel* (Y page 202)
R a spare wheel* (Y page 202)
R the MOExtended run-flat sys-
tem* (Y page 262) Preparing the vehicle
i Vehicle preparation is not necessary on
vehicles with MOE tyres*.
X Stop your vehicle as far away from traffic
as possible on solid, non-slippery, level
ground.
X Switch on the hazard warning lamps.
X Apply the handbrake.
Vehicles with manual transmission X
Shift to either first or reverse gear. Vehicles with AUTOTRONIC* X
Move the selector lever to P.
For all vehicles X
All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area whilst a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Switch off the engine.
X Remove the key from the ignition lock.
X Get out of the vehicle.
X Close the driver’s door.
X Place the warning triangle ( Ypage 200) at
a suitable distance. Observe legal require-
ments. Practical advice
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Battery
264 step out of the vehicle first and touch the
bodywork.
R Do not wipe the battery using a cloth. The
battery could be destroyed as a result of
electrostatic charge or due to flying
sparks.
! Switch off the engine and remove the key
before disconnecting the terminal clamps
from the battery. Otherwise, you may
destroy electronic components, such as
the alternator.
i Mercedes-Benz recommends that you
have all work involving the battery, e.g.
removing, charging and replacing, carried
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
footwell in front of the front-passenger seat.
The main fuse box is also located there. 1
Retaining screw
2 Cap
X Remove the floormat*.
X Remove retaining screw 1by turning it
anti-clockwise, e.g. by using a coin.
X Lift up cover 2. 3
Negative terminal
4 Positive terminal Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R the brake boosting effect will not be avail-
able. Greater braking force will then be
required and the brake pedal travel will
be longer. If necessary, depress the
brake pedal with maximum force.
R you will no longer be able to turn the key
in the ignition lock.
R the selector lever is locked in position P
on vehicles with AUTOTRONIC*. Practical advice
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