Safety systems
Problem | Possible causes/consequences and
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The red brake system warning lamp comes on while the engine is running. A warning tone also sounds. |
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There is not enough brake fluid in the brake fluid reservoir. |
WARNING
Driving with the brake warning lamp illuminated can result in an accident. Have
your brake system
checked immediately if the brake warning lamp stays on. Do not add brake fluid
before checking
the brake system.
Overfilling the brake fluid reservoir can result in spilling brake fluid on hot
engine parts and the
brake fluid catching fire. You can be seriously burned.
Problem | Possible causes/consequences and
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![]() The yellow ABS warning lamp is lit while the engine is running. |
![]() ABS (Anti-lock Brake System) is deactivated due to a malfunction. BAS (Brake Assist), BAS PLUS, ESP® (Electronic Stability
Program), PRE-SAFE® Brake, the HOLD function and hill start
assist are therefore also deactivated, for example. |
![]() The yellow ABS warning lamp is lit while the engine is running. |
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ABS is temporarily unavailable. BAS, BAS PLUS, ESP®, EBD
(electronic brake force distribution), PRE-SAFE® Brake, the HOLD
function, hill start assist are therefore also deactivated, for
example. |
![]() The yellow ABS warning lamp is lit while the engine is running. A warning tone also sounds. |
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EBD is faulty. Therefore, ABS, BAS, BAS PLUS, ESP®, PRE-SAFE®,
PRE-SAFE® Brake, the HOLD function and hill start assist are
unavailable, for example. |
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The red brake warning lamp, the yellow ESP® and ESP® OFF warning lamps and the yellow ABS warning lamp are lit while the engine is running. |
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ABS and ESP® are faulty. Therefore, BAS, BAS PLUS, EBD, PRESAFE
® Brake, the HOLD function and hill start assist, for example,
are unavailable due to a malfunction. |
![]() The yellow ESP® warning lamp flashes while the vehicle is in motion. |
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ESP® or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin. |
![]() The yellow ESP® OFF warning lamp is lit while the engine is running. |
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ESP® is deactivated. ESP® will not stabilize the vehicle if it starts
to skid or if a wheel starts to spin. |
![]() AMG vehicles only: The yellow SPORT handling mode warning lamp is lit while the engine is running. |
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SPORT handling mode is activated. ESP® only stabilizes the vehicle
in extreme situations. ESP® intervention may not be able to
provide sufficient assistance in such situations and the vehicle
may start to skid. |
![]() The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running. |
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ESP®, BAS, BAS PLUS, PRE-SAFE® Brake, the HOLD function and
hill start assist are not available due to a malfunction. ESP® will
not stabilize the vehicle if it starts to skid or if a wheel starts to
spin. |
![]() The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running. |
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ESP®, BAS, the HOLD function and hill start assist are temporarily
unavailable. |
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The red brake system warning lamp comes on while the vehicle is moving. A warning tone also sounds. |
You are driving with the parking brake applied.![]() The warning lamp goes out and the warning tone ceases. |
![]() The red SRS warning lamp is lit while the engine is running. |
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The restraint systems are malfunctioning. The air bags or ETDs
may either be triggered unintentionally or, in the event of an
accident, not be triggered at all. |
WARNING
In the event a malfunction of the SRS is indicated as outlined above, the SRS
may not be
operational.
For your safety, we strongly recommend that you contact an authorized
Mercedes-Benz Center
immediately to have the system checked. Otherwise the SRS may not be activated
when needed
in an accident, which could result in serious or fatal injury, or it might
deploy unexpectedly and
unnecessarily which could also result in injury.
See also:
Reset function
You can reset COMAND to the factory
settings. Amongst other things, this will
delete all personal data (e.g. station presets,
address book entries, entries in the
destination memory and in the ...
Range of the sensors
General notes
The sensors must be free of dirt, ice and
slush; otherwise they may not function
correctly. Clean the sensors regularly, taking
care not to scratch or damage them.
Side view
...
Cleaning the steering wheel and gear or
selector lever
•► Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz. ...