warning MERCEDES-BENZ B-CLASS HATCHBACK 2008 Workshop Manual

Display
messages 207Display messages Possible cause/consequence Possible solution
ESP unavailable See
Owner's Manual G
Risk of accident
ESP ®
is temporarily unavailable. The self-
diagnosis is, for example, not yet com-
plete.
The following systems are also unavaila-
ble:
R BAS
R the steering assistant STEER CONTROL
R hill start assist
R the tyre pressure loss warning system
The brake system continues to function
normally, but without the functions listed
above. X
Carefully drive a short, lightly curving stretch
of road at a speed above 20 km/h.
If the display message disappears, ESP ®
is
available again. Practical advi
ce
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Display
messages 208 Display messages Possible cause/consequence Possible solution
G
Risk of accident
ESP ®
is unavailable due to undervoltage.
The battery is, for example, not being
charged.
The following systems are also unavaila-
ble:
R BAS
R the steering assistant STEER CONTROL
R hill start assist
R the tyre pressure loss warning system
The brake system continues to function
normally, but without the functions listed
above. X
Drive on carefully.
X Visit a qualified specialist workshop immedi-
ately.
X Observe the additional messages in the multi-
function display (Y page 202). Practical advi
ce
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Display
messages 209Display messages Possible cause/consequence Possible solution
ESP inoperative See
Owner's Manual G
Risk of accident
ESP ®
is unavailable due to a malfunction.
The following systems are also unavaila-
ble:
R BAS
R the steering assistant STEER CONTROL
R hill start assist
R the tyre pressure loss warning system
The brake system continues to function
normally, but without the functions listed
above. X
Drive on carefully.
X Visit a qualified specialist workshop immedi-
ately. Vehicle Consult workshop
Safe operation of AUTOTRONIC* can no
longer be fully guaranteed. X
Stop in accordance with traffic conditions.
X Move the selector lever to P.
X Turn the key to position 0in the ignition lock.
X Wait at least 10 seconds before restarting the
engine.
X Move the selector lever to position Dor R.
X Drive on carefully.
X Have the transmission checked immediately at
a qualified specialist workshop. Shift to N to start
Vehicles with AUTOTRONIC*: the selector
lever is not in position
Nor P. X
Move the selector lever to position Nor P. Practical advi
ce
* optional
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Display
messages 210 Display messages Possible cause/consequence Possible solution
No Service Your vehicle is outside the network pro-
vider transmitter/receiver range. X
Wait until the operational readiness symbol
appears in the multi-function display
(Y page 112). Park Assist cancelled The driver’s door is open and the driver's
seat belt has not been fastened. X
Repeat the parking process with the seat belt
fastened and the driver's door closed. You have inadvertently touched the multi-
function steering wheel while steering
intervention was active. X
Make sure that the multi-function steering
wheel is not touched while steering interven-
tion is active. The vehicle started to skid and ESP
®
inter-
vened. X
Use the Active Park Assist* system later. Park Assist inoperative You have just performed a large number
of turning or parking manoeuvres.
Active Park Assist* will become available again
after approximately 10 minutes.
X
Stop in accordance with traffic conditions.
X Switch off and restart the engine.
X If the warning message does not disappear:
consult a qualified specialist workshop. PARKTRONIC* is inoperative. X
Observe the notes on PARKTRONIC* in the
"Troubleshooting" section (Y page 236).Practical advi
ce
* optional
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Display
messages 211Display messages Possible cause/consequence Possible solution
Tyre press. Check tyres
G
Risk of accident
The tyre pressure loss warning system has
detected a significant loss in pressure. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to traffic conditions as you do so.
X Check the tyres.
X Check the tyre pressure. If necessary, correct
the tyre pressure (Y page 178).
X If necessary, repair the faulty tyre or change
the wheel (Y page 252).
X Then restart the tyre pressure loss warning
system once the tyre pressure is correct
(Y page 179). Run Flat Indi-
cator inoperative The tyre pressure loss warning system is
faulty. X
Visit a qualified specialist workshop. Check tyres Then restart Run
Flat Indicator A tyre pressure loss warning system dis-
play message appeared. X
Correct the tyre pressure on all tyres
(Y page 178).
X Restart the tyre pressure loss warning system
(Y page 179). Run Flat Indi-
cator inoperative The tyre pressure loss warning system is
faulty. X
Visit a qualified specialist workshop. SRS Restraint system
malfunction Con-
sult workshop G
Risk of injury
There is a malfunction in the restraint sys-
tem. X
Visit a qualified specialist workshop immedi-
ately. Practical advi
ce
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Display
messages 215Display messages Possible cause/consequence Possible solution
The poly-V-belt may have torn. X
Pull over and stop the vehicle safely and switch
off the engine, paying attention to road and
traffic conditions.
X Check the poly-V-belt.
X If the poly-V-belt is torn: do not continue
driving. Consult a qualified specialist work-
shop.
X If the poly-V-belt is not damaged: do not
start the engine again until the display mes-
sage disappears. Otherwise, there is a risk of
engine damage. B Top up coolant See
Owner's Manual The coolant level is too low. X
Top up the coolant, observing the warning
notes before doing so (Y page 175).
X If the coolant needs topping up more often than
usual, have the engine coolant system checked
at a qualified specialist workshop. 3 Power steer. mal-
function Consult
workshop G
Risk of accident
There is no power assistance for the steer-
ing. You will need to use more force to
steer.
The steering assistant STEER CONTROL is
also deactivated. X
Check whether you are able to apply the extra
force required.
X If you are able to steer safely: carefully drive
on to a qualified specialist workshop.
X If you are unable to steer safely : do not drive
on. Contact the nearest qualified specialist
workshop. Practical advi
ce
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Troubleshooting
222 Troubleshooting
Points to remember
G
Risk of accident and injury
The operating safety of your vehicle could be compromised if service work is carried out improperly. You could lose control of the vehicle,
thereby causing an accident. Safety systems may also not be able to protect you or others as intended.
Always have maintenance work carried out 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 and buttons
Problem Possible cause/consequence Suggested solutions
One or all of the indicator lamps
in the seat heating* button are
flashing. The seat heating* has
switched itself off automatically. The on-board voltage is too low,
because too many consumers are
switched on. X
Switch off consumers that are not required, e. g. reading lamp or
interior lighting.
Once the battery is sufficiently charged, the seat ventilation* will
switch back on automatically. The indicator lamp in the
2
button on the air-conditioning */
Ther motronic* control panel
lights up. The cooling system can-
not be switched on. Cooling has been deactivated
due to a malfunction. X
Visit a qualified specialist workshop. Practical advice
* optional
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Troubleshooting
223Problem Possible cause/consequence Suggested solutions
The indicator lamp in the
F/
1 rear-window heating button
is flashing. The rear-window heat-
ing has switched itself off prema-
turely 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. reading lamp or
interior lighting.
Once the battery is sufficiently charged, the rear window heating
will switch back on automatically. Vehicles with automatic child
seat recognition on the front-
passenger seat:
The
5 PASSENGER AIRBAG
OFF warning lamp on the centre
console is lit. A special Mercedes-Benz child
seat with automatic child seat
recognition has been fitted to the
front-passenger seat. The front-
passenger airbag has therefore
been disabled as desired.
G
Risk of injury
There is no child seat fitted to the
front-passenger seat. The auto-
matic child seat recognition is
malfunctioning. X
Remove electronic equipment from the front-passenger seat, for
example
R
notebook
R mobile phone
R cards with transponders, e.g. ski passes or access passes
If the 5 PASSENGER AIRBAG OFF warning lamp is still lit:
X Visit a qualified specialist workshop. You have started the engine with
the key. The indicator lamp in the
ECO start/stop function* button
does not light up or goes out
again after a short time. You have deactivated the ECO
start/stop function*. X
Activate the ECO start/stop function* again. The ECO start/stop function*is
not available due to a fault. X
Visit a qualified specialist workshop. Practical advice
* optional
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Troubleshooting
224 Warning and indicator lamps in the instrument cluster
Problem Possible cause/consequence Suggested solutions
-
The yellow ABS warning
lamp comes on while the
engine is running. G
Risk of accident
ABS (Anti-lock Brake System) is
deactivated due to a fault. There-
fore, ESP ®
(Electronic Stability
Program), BAS (Brake Assist), the
steering assistant STEER CON-
TROL, the hill start assist and the
tyre pressure loss warning sys-
tem are also deactivated.
The brake system continues to
function normally, but without
electronic support. The wheels
could therefore lock if you brake
hard.
If the ABS control unit is faulty,
other systems may also not be
available: e.g. Parktronic sys-
tem*, the navigation system* or
the Autotronic*. X
Drive on carefully.
X Observe the additional messages in the multi-function display
(Y page 202).
X Visit a qualified specialist workshop. -
The yellow ABS warning
lamp comes on while the
engine is running. G
Risk of accident
The on-board voltage is too low.
ABS has been deactivated due to
undervoltage. X
Switch off consumers that are not required, e g. reading lamps or
interior lighting.
ABS will be available again as soon as the vehicle's electrical sys-
tem voltage increases. Practical advice
* optional
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Troubleshooting
225Problem Possible cause/consequence Suggested solutions
Therefore, ESP
®
, BAS, the steer-
ing assistant STEER CONTROL,
hill start assist and the tyre pres-
sure loss warning system are also
deactivated.
The brake system continues to
function normally, but without
electronic support. The wheels
could therefore lock if you brake
hard. v
The yellow ESP ®
warning
lamp is lit while the engine
is running. In addition, a
message appears in the
multi-function display. G
Risk of accident
ESP ®
is unavailable due to a mal-
function.
The following systems have also
been deactivated:
R BAS
R the steering assistant STEER
CONTROL
R hill start assist
R the tyre pressure loss warning
system
The braking system remains
available with full brake boosting
effect but without the above func-
tions. X
Observe the additional messages in the multi-function display
(Y page 202).
X Drive on carefully.
X Visit a qualified specialist workshop. Practical advice
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