C-Class Interactive Owner's Manual

Seat belts

Wearing seat belts

Seat belts are the most effective means of restraining the movement of vehicle occupants in the event of an accident. This reduces the risk of vehicle occupants coming into contact with the vehicle interior.

Risk of injury

A seat belt which is not worn correctly, or which has not been engaged in the seat belt buckle correctly, cannot perform its intended protective function. Under certain circumstances this could cause severe or even fatal injuries.

Make sure that all occupants - in particular, pregnant women - wear their seat belt correctly at all times.

  • The seat belt must pass closely over your body and must not be twisted. You should therefore avoid wearing bulky clothing (e.g. a winter coat). The shoulder belt section must be routed across the middle of your shoulder - on no account across your neck or under your arm - and pulled tight against your upper body. The lap belt must always pass across your lap as low down as possible, i.e. over your hip joints - not across your abdomen. If necessary, push down the belt strap slightly and then retighten it in the roll-up direction.

  • Do not route the belt strap across sharp or fragile objects, especially if these are located on or in your clothing, e.g. spectacles, pencils, keys, etc. The seat belt strap could be damaged and tear in an accident and you or other vehicle occupants could be injured.

  • Only one person should use each seat belt at any one time. Children must never travel sitting on the lap of other occupants. It would not be possible to restrain the child in the event of a sudden change in direction, braking or an accident. This could result in severe or even fatal injuries to the child and other occupants.

  • Persons less than 1.50 m tall cannot wear the seat belts correctly. For this reason, secure persons less than 1.50 m tall in specially designed, suitable restraint systems.

  • Children less than 1.50 m tall or under 12 years of age cannot wear the seat belts properly. Therefore, always secure these children in suitable child restraint systems on suitable vehicle seats. You can find more information under "Children in the vehicle" in the "Safety" section of the Owner's Manual. Follow the manufacturer's installation instructions when fitting the child restraint system.

  • Do not secure any objects with a seat belt if the seat belt is also being used by one of the vehicle's occupants.

Risk of injury

The seat belt does not offer the intended level of protection unless the backrest is almost vertical. Under certain circumstances this could cause severe or even fatal injuries.

Before starting a journey, make sure that the seat is properly adjusted and that the backrest is almost vertical.

Risk of injury

A dirty or damaged seat belt or a seat belt that has been subjected to a load in an accident or modified no longer offers the intended level of protection. Under certain circumstances this could cause severe or even fatal injuries.

For this reason, check regularly that the seat belts are not damaged or dirty.

Always have damaged seat belts or seat belts that have been subjected to a load in an accident replaced at a qualified specialist workshop. Choose a qualified specialist workshop which has the necessary specialist knowledge and tools for the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose.

For safety reasons, Mercedes-Benz recommends that you only use seat belts which have been approved by Mercedes-Benz for your vehicle.

Belt sash guide
Belt tongue
Buckle
Release button

Routing the belt

  

Adjust the seat and move the backrest to an almost vertical position more.

  

Pull the belt smoothly through belt sash guide .

  

Route the belt over the centre of the shoulder without twisting it.

  

Engage belt tongue into buckle .

  

If necessary, adjust the belt to the appropriate height more.

  

If necessary, pull upwards on the shoulder section of the belt to tighten the belt across your body.

Routing the belt

  

Press release button and guide belt tongue back towards belt sash guide .

 

Belt warning for driver and front passenger

The seat belt warning lamp in the instrument cluster reminds you that all occupants should fasten their seat belts. The seat belt warning lamp may light up continuously or it may flash. Additionally, there may be a warning tone.

The seat belt warning lamp goes out and the warning tone ceases when the driver and the front passenger have fastened their seat belt.

For certain countries only: regardless of whether the driver or the front passenger is already secured, the seat belt warning lamp lights up for six seconds after the engine has been started. The seat belt warning lamp then goes out if both the driver and the front passenger have fastened their seat belt.

Further information about the seat belt warning lamp more.

 

Belt height adjustment

You can adjust the seat belt height on the driver's seat and front-passenger seat.

Adjust the belt to a height that allows it to be routed across the middle of your shoulder.

Release catch
  

To raise: slide the belt sash guide upwards.

 

The belt sash guide engages in various positions.

  

To lower: press and hold release button .

  

Slide the belt sash guide downwards.

  

Let go of release button and make sure that the belt sash guide has engaged.

 

Rear seat belt status indicator

The rear-compartment seat belt status indicator tells you if the rear passengers have fastened their seat belts. The status indicator for the rear rear-compartment also tells you how many of the belt tongues are inserted into the seat belt buckles.

The rear-compartment seat belt status indicator appears in the multi-function display for around 30 seconds if:

  • you set off and have reached a speed of approx. 10 km/h

  • the rear passengers fasten or unfasten their seat belts while driving

  • someone gets in or out of the vehicle

You can also cancel the messages immediately more.

The following messages appear in the multi-function display:

Vehicles with multi-function steering wheel (4 buttons)

  •  No rr.st.belt engaged

  •  1 rr.st.belt engaged

  •  2 rr.st.belts engaged

  •  3 rr.st.belts engaged

Vehicles with a luxury multi-function steering wheel* (12 buttons)

  •  No rear seat belt engaged

  •  1 rear seat belt engaged

  •  2 rear seat belts engaged

  •  3 rear seat belts engaged

The status indicator for the rear-compartment seat belts is only available for certain countries.

 

Correct driver's seat position

Steering wheel
Seat belt
Seat
Risk of accident

Only adjust the driver's seat when the vehicle is stationary. You will otherwise be distracted from the road and traffic conditions and you could lose control of the vehicle as a result of the seat moving. This could cause an accident.

Risk of accident

Only adjust the steering wheel when the vehicle is stationary and do not pull away until the steering wheel adjustment mechanism is locked in position. You might otherwise drive without the steering wheel adjustment mechanism being locked in position. As a result you could be distracted from road and traffic conditions by an unexpected movement of the steering wheel and thereby cause an accident.

The steerability of the vehicle is however not affected.

  

Check whether seat and the head restraint are adjusted properly more.

Make sure that:

  • you are as far away from the driver's front airbag as possible

  • you are sitting in a normal upright position

  • you can fasten the seat belt properly

  • you have moved the backrest to an almost vertical position

  • you have set the seat angle so that your thighs are gently supported

  • you can depress the pedals properly

  • you have adjusted the head restraint so that the back of your head is supported at eye level by the central area of the head restraint

  

Check whether steering wheel is adjusted properly more.

Make sure that:

  • you can hold the steering wheel with your arms slightly bent

  • you can move your legs freely

  • you can see all the displays in the instrument cluster clearly

  

Check whether you have fastened seat belt properly more.

It should:

  • fit snugly across your body

  • be routed across the middle of your shoulder

  • routed in your pelvic area across the hip joints