Get Occupant safety -> Information on the automatic functions of the restraint system Guide for Mercedes CLA 4 Door Third Generation (2025-2026)

Status of the front passenger air bag in relation to

the stature of the person:

Front passenger air bag disabled: PASSENGER

AIR BAG OFF lights up continuously.

The front passenger air bag will not be

deployed in the event of an accident. If

PASSENGER AIR BAG OFF is lit, no one may

use the front passenger seat.

Front passenger air bag enabled: PASSENGER

AIR BAG ON lights up for up to 60 seconds or

until both the PASSENGER AIR BAG ON and

OFF indicator lamps go out.

The front passenger air bag may be deployed

during an accident. Observe the following

information on the correct seat position

(/ page 37).

Vehicles with rear seats: a person of smaller

stature should use a rear seat.

System limits

The front passenger air bag may otherwise be dis-

abled by mistake, for example, in the following sit-

uation:

The front passenger transfers their weight by

supporting themselves on a vehicle armrest.

The front passenger sits in such a way that

their weight is raised from the seat surface.

NOTE Deployment of components of the

restraint system when the front passenger

seat is unoccupied

In an accident, the components of the

restraint system may deploy unnecessarily on

the front passenger side if:

There are heavy objects on the front

passenger seat.

The seat belt tongue is engaged in the seat

belt buckle of the front passenger seat and

the front passenger seat is unoccupied.

Store objects in a suitable place.

Only one person should use each seat

belt at any one time.

Depending on the detected accident situation, the

window air bag on the front passenger side may

deploy. The air bag is deployed regardless of

whether the front passenger seat is occupied.

Function of PRE-SAFE

(anticipatory occupant

protection)

PRE-SAFE

is able to detect certain critical driv-

ing situations and implement pre-emptive meas-

ures to protect the vehicle occupants.

PRE-SAFE

can implement the following meas-

ures independently of each other:

Tightening the seat belts on the driver's seat

and front passenger seat.

Closing the side windows.

Vehicles with sliding sunroof: closing the slid-

ing sunroof.

Occupant safety – Information on the automatic functions of the restraint system

Vehicles with memory function: moving the

front passenger seat to a more favorable seat

position.

PRE-SAFE

Sound: provided that the multime-

dia system is switched on, generating a brief

noise signal to stimulate the innate protective

mechanism of a person's hearing.

NOTE Damage caused by objects in the

footwell or behind the seat

The automatic adjustment of the seat position

may result in damage to the seat and/or the

object.

Stow objects in a suitable place.

Reverting the PRE-SAFE

system measures

If an accident did not occur, the pre-emptive

measures that were taken will be reversed.

You will need to perform certain settings yourself.

If the seat belt pre-tensioning is not reduced,

move the seat backrest back slightly.

The locking mechanism will release.

Seat belt adjustment function

Vehicles with PRE-SAFE

: aer you have fastened

the seat belt of the front seat, it may adjust itself

against your body by pulling at the shoulder until

somewhat tight. Do not hold the seat belt tightly

while it is adjusting.

This function is a reminder that all vehicle occu-

pants must wear their seat belts correctly.

You can activate and deactivate the seat belt

adjustment function using the multimedia system

(/ page 45).

Activating/deactivating seat belt adjustment via

the multimedia system

Multimedia system:

Settings

Vehicle

Occupant Protection

Activate or deactivate Belt adjustment.

Overview of the automatic measures aer an acci-

dent

Depending on the type and severity of the acci-

dent, and depending on the vehicle's equipment,

the following measures can be implemented,

forexample:

automatic braking (post-collision brake)

activating the hazard warning lights

triggering an automatic emergency call

(/ page 263)

Switching o the engine

To start the vehicle again, switch the vehicle

o and on once more (/ page 137). Depend-

ing on the type and severity of the accident,

you may no longer be able to start the vehicle.

switching o the fuel supply

unlocking the vehicle doors

lowering the side windows

displaying the emergency guide in the central

display

switching on the interior lighting

Occupant safety – Information on the automatic functions of the restraint system

Function of the post-collision brake aer an acci-

dent

Depending on the accident situation, the post-col-

lision brake can minimise the severity of a further

collision or even avoid it.

If an accident is detected, the post-collision brake

can initiate automatic braking. When the vehicle

has come to a standstill, the electric parking

brake is automatically applied.

The driver can cancel automatic braking by taking

the following actions:

Braking more strongly than automatic braking

Fully depressing the accelerator pedal with

force

Purpose and function of the restraint system

Overview of deployment situations (restraint sys-

tem)

Make sure that the following prerequisites in par-

ticular have been met so that the components of

the restraint system are able to provide the inten-

ded level of protection:

Sit correctly (/ page 37).

Fasten the seat belt correctly (/ page 38).

Function of the seat belt warning lamp

(/ page 40).

Function of the rear seat belt status dis-

play (/ page 40).

The restraint system warning lamp 6 is not

lit up aer the self-test (/ page 39).

The PASSENGER AIR BAG indicator lamps dis-

play the correct status of the front passenger

air bag (/ page 41).

Depending on the detected deployment situation,

the components of the restraint system can be

activated or deployed independently of each

other:

Emergency Tensioning Device: frontal impact,

rear impact, side impact, rollover

Driver's air bag, front passenger air bag: fron-

tal impact

Knee air bag: frontal impact

Side impact air bag: side impact

Window curtain air bag: side impact, rollover,

frontal impact

The installation location of an air bag is identied

by the AIRBAG symbol (/ page 52).

Observe the information on the function of the

restraint system (/ page 46).

Information on how the restraint system works

How the restraint system functions depends on

the severity of the impact detected and the appa-

rent type of accident.

Occupant safety – Purpose and function of the restraint system

Occupant safety -> Information on the automatic functions of the restraint system for Your Mercedes CLA 4 Door Third Generation (2025-2026)

Related Topics

Popular Owner Manuals

Latest Owner Manuals