E-CLASS Mercedes-Benz

2023 Mercedes-Benz E-CLASS SEDAN Restraint and Seat Belts Guidelines


Mercedes-Benz E-CLASS SEDAN 2023 Restraint and Seat Belts

Modern safety measures are included in the 2023 Mercedes-Benz E-Class Sedan, with special attention paid to the seat belt and restraint systems. In the case of an accident, these systems are made to provide the highest level of protection possible. The vehicle has modern seat belts with automated adjustments to provide the optimal fit for a variety of passengers’ sizes and shapes. Pre-tensioners and load limiters are other features of the restraint system that assist in controlling the forces applied to the passengers in the event of a crash. In addition, the E-Class Sedan has possibly more complex equipment like rear-seat airbags and other cutting-edge technologies like seat belt reminders, which improve overall passenger safety. Mercedes-Benz is committed to passenger safety, as evidenced by its emphasis on seat belts and restraints and its blend of luxury with state-of-the-art safety technologies.

2023 Mercedes Benz E-Class Specs, Price, Features, Mileage (Brochure)

Restraint System

The protection provided by the restraint system
The restraint system includes the following components:

  • Seat belt system
  • Airbags
  • Child restraint system
  • Child seat anchors

The restraint system can help prevent the vehicle occupants from coming into contact with parts of the vehicle interior in the event of an accident. In the event of an accident, the restraint system can also reduce the forces to which the vehicle occupants are subjected.
A seat belt can only provide the best level of protection if it is worn correctly. Depending on the detected accident situation, Emergency Tensioning Devices and/or airbags supplement the protection offered by a correctly worn seat belt. Emergency Tensioning Devices and/or airbags are not deployed in every accident. In order for the restraint system to provide the intended level of protection, each vehicle occupant must observe the following information:

  • Fasten seat belts correctly.
  • Sit in an almost upright seat position with their back against the seat backrest.
  • Sit with their feet resting on the floor, if possible.
  • Always secure persons under 5 t (1.50 m) tall

in an additional restraint system suitable for Mercedes-Benz vehicles. However, no system available today can completely eliminate injuries and fatalities in every accident situation. In particular, the seat belt and airbag generally do not protect against objects penetrating the vehicle from the outside. It is also not possible to completely rule out the risk of injury caused by the airbag deploying.

Limitations of the protection provided by the restraint system

WARNING Risk of injury or death due to modifications to the restraint system Vehicle occupants may no longer be protected as intended if alterations are made to the restraint system.

  • Never alter the parts of the restraint system.
  • Never tamper with the wiring or any electronic component parts or their software.

If it is necessary to modify the vehicle to accommodate a person with disabilities, contact an authorized Mercedes-Benz Center for details.
USA only: for details, contact our Customer Assistance Center at 1-800-FOR-MERCedes (1‑800‑367‑6372).

Restraint system functionality
When the vehicle is switched on, a self-test is performed, during which the 6-restraint system warning lamp lights up. It goes out no later than a few seconds after the vehicle is started. The components of the restraint system are then functional.

Malfunctioning restraint system
A malfunction has occurred in the restraint system if:

  • the 6-restraint system warning lamp does not light up when the vehicle is switched on
  • the 6-restraint system warning lamp lights up continuously or repeatedly during a journey

WARNING Risk of injury due to malfunctions in the restraint system

Components in the restraint system may be activated unintentionally or not deploy as planned in an accident.

  • Have the restraint system checked and repaired immediately at a qualified specialist workshop.

The function of the restraint system in an accident
How the restraint system works depends on the severity of the impact detected and the apparent type of accident:

  • Frontal impact
  • Rear impact
  • Side impact
  • Rollover

The activation thresholds for the components of the restraint system are determined based on the evaluation of the sensor values measured at various points in the vehicle. This process is preemptive in nature. The triggering/deployment of the components of the restraint system must take place in good time at the start of the collision. Factors that can be seen and measured only after a collision has occurred cannot play a decisive role in airbag deployment, nor do they provide an indication of airbag deployment. The vehicle may be deformed significantly without an airbag being deployed. This is the case if only parts that are relatively easily deformed are affected and the rate of vehicle deceleration is not high. Conversely, an airbag may be deployed even though the vehicle suffers only minor deformation. If very rigid vehicle parts such as longitudinal members are hit, this may result in sufficiently high levels of vehicle deceleration. 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 airbag, front passenger airbag: frontal impact
  • Knee airbag: frontal impact
  • Side airbag: side impact
  • Window airbag: side impact, rollover, frontal impact
  • PRE-SAFE® Impulse Side: side impact
    The front passenger airbag can be deployed in an accident only if the PASSENGER AIR BAG OFF indicator lamp is off. 

WARNING Risk of burns from hot air bag components

The air bag parts are hot after an airbag has been deployed.

  • Do not touch the airbag parts.
  • Have a deployed airbag replaced at a qualified specialist workshop as soon as possible.

Mercedes Benz recommends that you have the vehicle towed to a qualified specialist workshop after an accident. Take this into account, particularly if an Emergency Tensioning Device is triggered or an airbag is deployed. If the Emergency Tensioning Devices are triggered or an airbag is deployed, you will hear a bang, and a small amount of powder may also be released:

  • The bang will not generally affect your hearing.
  • In general, the powder released is not hazardous to health but may cause short-term breathing difficulties to persons suffering from asthma or other pulmonary conditions.

Provided it is safe to do so, leave the vehicle immediately or open the window in order to prevent breathing difficulties. Air bags and pyrotechnic Emergency Tensioning Devices contain perchlorate material, which may require special handling or environmental protection measures. National guidelines regarding waste disposal must be observed. In California, see Using the search function, you will find information on perchlorate, for example.

Seat belts
The protection provided by the seat belt Always fasten your seat belt correctly before starting a journey. A seat belt can provide the best level of protection only if it is worn correctly.

WARNING Risk of injury or death due to incorrectly fastened seat belt
If the seat belt is not worn correctly, it cannot perform its intended protective function. In addition, an incorrectly fastened seat belt can also cause injuries, for example, in the event of an accident or when braking or changing direction suddenly.

  • Always ensure that all vehicle occupants have their seat belts fastened correctly and are sitting properly.
  • Always observe the instructions about the correct driver’s seat position and adjusting the seat.



What type of seat belt system is used in the 2023 Mercedes-Benz E-Class Sedan?

It uses a 3-point seat belt system for all seating positions.

Are there pre-tensioners installed on the seat belts?

Yes, the front seat belts are equipped with pre-tensioners to tighten the belts in the event of a collision.

Does the rear seat also have pre-tensioners for the seat belts?

This varies by model and region. Typically, front seats have pre-tensioners, but rear seats might not.

Are there load limiters on the seat belts?

Yes, the seat belts are equipped with load limiters to reduce the risk of injury from the belt during a crash.

Is there an active seat belt safety feature?

The E-Class Sedan may include active seat belt technology that adjusts tension according to driving conditions.

Do the seat belts have height adjustment?

Yes, front seat belts typically feature height adjustment for improved comfort and safety.

Is there a seat belt reminder system?

Yes, the vehicle is equipped with a seat belt reminder system for both front and rear seats.

Are there airbags integrated into the seat belts?

Some models might offer this feature, known as inflatable seat belt airbags, mainly for rear passengers.

Can the seat belts be customized for child seats?

The E-Class Sedan’s seat belts can be used with child seats, and the vehicle may also include ISOFIX/LATCH points for easier child seat installation.

How does the restraint system detect a collision?

The car uses sensors to detect a collision and activates the restraint system accordingly.

Is there any technology for detecting rear-end collisions?

The car may include sensors and technology to specifically detect and react to rear-end collisions.

How do the seat belts and airbags work together?

In the event of a collision, the seat belts and airbags work in tandem to provide comprehensive protection, with the seat belts positioning the occupants correctly for airbag deployment.

Are there any special features for the front passenger seat belt?

The front passenger seat belt might include additional features like a weight sensor to adjust airbag deployment.

Is there any difference in seat belt technology between the different E-Class Sedan models?

Higher-end models might include additional features like enhanced pre-tensioners or rear-seat airbags integrated into the belts.

How does the seat belt system respond in a rollover?

In a rollover, the system is designed to keep occupants securely restrained, potentially in combination with rollover-specific airbags.

Useful Link

View Full User Guide: Mercedes-Benz E-CLASS SEDAN 2023 User Manual

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2023 Mercedes Benz E-Class Specs, Price, Features, Mileage (Brochure)

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