Mercedes-Benz B-Class hatchback 2022 Owner's Manual page 238

A horn sounds at regular intervals if, despite the
Brake immediately message, you switch off the
vehicle, remove your seat belt and open the driv-
er's door. If you attempt to lock the vehicle, the
horn tone becomes louder. The vehicle cannot be
locked until you have deactivated the HOLD func-
tion.
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Once you have switched off the vehicle, you
cannot restart it until you have deactivated
the HOLD function.
Function of Hill Start Assist
Hill Start Assist holds the vehicle for a short time
when pulling away on a hill under the following
conditions:
The transmission is in position h or k.
R
(Vehicles with automatic transmission)
The electric parking brake is released.
R
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal and
depress it before the vehicle begins to roll away.
& WARNING Risk of accident and injury due
to the vehicle rolling away
After a short time, Hill Start Assist no longer
holds the vehicle.
Swiftly move your foot from the brake
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pedal to the accelerator pedal. Do not
leave the vehicle when it is being held by
Hill Start Assist.
Function of Adaptive Brake Lights
Adaptive Brake Lights warn following traffic in an
emergency braking situation with the following
actions:
flashing the brake lamps
R
activating the hazard warning lights
R
( page 145)
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If the vehicle is braked sharply from speeds above
50 km/h, the brake lamps flash rapidly. This pro-
vides traffic travelling behind you with an even
more noticeable warning.
Driving and parking 235
Start-off assist
Function of the start-off assist
The start-off assist enables optimal vehicle accel-
eration from a standstill. For this, a suitably high-
grip road surface is required, the tyres and vehicle
must also be in good condition.
Do not activate the start-off assist on public
roads.
Be sure to observe the safety notes and informa-
®
tion on ESP ( page 231).
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Activating the start-off assist
& WARNING Risk of skidding and having an
accident from wheels spinning
When you use start-off assist, individual
wheels could spin and you could lose control
of the vehicle.
®
If ESP is deactivated, there is a risk of skid-
ding and accident!
Make sure that no persons or obstacles
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are in the close vicinity of your vehicle.