Saf ety, Driving safety systems – Mercedes-Benz GLK-Class 2015 Owners Manual User Manual

Page 72

Recognition by the radar sensor system is

also impaired in the event of:

there is dirt on the sensors or anything else

covering the sensors

there is interference by other radar sources

there are strong radar reflections, for

example in parking garages

a narrow vehicle traveling in front, e.g. a

motorbike

a vehicle traveling in front on a different line

relative to the center of your vehicle

Following damage to the front end of the vehi-

cle, have the configuration and operation of

the radar sensors checked at a qualified spe-

cialist workshop. This also applies to colli-

sions at low speeds where there is no visible

damage to the front of the vehicle.

Function

To avoid a collision, BAS PLUS calculates the

brake force necessary if:

you approach an obstacle, and

BAS PLUS has detected a risk of collision

When driving at a speed under 20 mph

(30 km/h): if you depress the brake pedal,

BAS PLUS is activated. The increase in brake

pressure will be carried out at the last possi-

ble moment.
When driving at a speed above 20 mph

(30 km/h): if you depress the brake pedal

sharply, BAS PLUS automatically raises the

brake pressure to a value adapted to the traf-

fic situation.
BAS PLUS provides braking assistance in haz-

ardous situations with vehicles in front within

a speed range between 4 mph (7 km/h) and

155 mph (250 km/h).
At speeds of up to approximately 40 mph

(70 km/h), BAS PLUS can also react to sta-

tionary objects. Examples of stationary

objects are stopped or parked vehicles.

If BAS PLUS demands particularly high

braking force, preventative passenger pro-

tection measures (PRE-SAFE

) are activa-

ted simultaneously.

Keep the brake pedal depressed until the

emergency braking situation is over.

ABS prevents the wheels from locking.

BAS PLUS is deactivated and the brakes func-

tion as usual again, if:

you release the brake pedal.

there is no longer a risk of collision.

no obstacle is detected in front of your

vehicle.

ESP

(Electronic Stability Program)

General notes

Observe the "Important safety notes" sec-

tion (

page 68).

ESP

monitors driving stability and traction,

i.e. power transmission between the tires and

the road surface.
If ESP

detects that the vehicle is deviating

from the direction desired by the driver, one

or more wheels are braked to stabilize the

vehicle. The engine output is also modified to

keep the vehicle on the desired course within

physical limits. ESP

assists the driver when

pulling away on wet or slippery roads. ESP

can also stabilize the vehicle during braking.

ETS/4ETS (Electronic Traction System)

Observe the "Important safety notes" sec-

tion (

page 68).

ETS/4ETS traction control is part of ESP

Traction control brakes the drive wheels indi-

vidually if they spin. This enables you to pull

away and accelerate on slippery surfaces, for

example if the road surface is slippery on one

side. In addition, more drive torque is trans-

ferred to the wheel or wheels with traction.
Traction control remains active, even if you

deactivate ESP

Driving safety systems

Saf

ety