Mercedes-Benz C-Class: Problems with the occupant classification system - Occupant Classification System (OCS) - Occupant safety - Safety - Mercedes-Benz C-Class Owners ManualMercedes-Benz C-Class: Problems with the occupant classification system

Problem Possible causes/consequences and Solutions
The indicator lamp illuminates and remains illuminated. indicator lamp illuminates and remains illuminated.
The person on the front-passenger seat:
• has the weight of a typical adult
• has been determined by the system not to be a child.
The OCS is malfunctioning.
as soon as possible at an authorized Mercedes-Benz Center. Have the OCS checked as soon as possible at an authorized Mercedes-Benz Center.
additional display messages in the multifunction display Observe the additional display messages in the multifunction display

WARNING
If the
illuminates and remains illuminated when the weight of a typical indicator lamp illuminates and remains illuminated when the weight of a typical adult or someone larger than a small individual has been detected on the passenger seat, do not allow any occupant to use the passenger seat until the system has been repaired.

Problem Possible causes/consequences and Solutions
The indicator lamp does not illuminate and/or does not remain illuminated. indicator lamp does not illuminate and/or does not remain illuminated.
The front-passenger seat is:
• unoccupied
• occupied with a weight up to or less than a typical 12- month-old child in a standard child restraint system
The OCS is malfunctioning.
nothing between the seat cushion and the child seat. Make sure there is nothing between the seat cushion and the child seat.
installation of the child restraint system. Check the installation of the child restraint system.
objects are applying additional weight onto the seat. Make sure that no objects are applying additional weight onto the seat.
lamp does not illuminate, have the OCS checked as soon as possible at an If the 45 indicator lamp does not illuminate, have the OCS checked as soon as possible at an authorized Mercedes-Benz Center. Do not transport a child on the front-passenger seat as long as the OCS is not functioning.
additional display messages in the multifunction display. Observe the additional display messages in the multifunction display.

WARNING
If the
not illuminate or remains out with the weight of a typical indicator lamp does not illuminate or remains out with the weight of a typical 12-month-old child in a standard child restraint or less, or is unoccupied, on the front-passenger seat, do not transport a child on the front-passenger seat until the system has been repaired.

    System self-test
    The indicator lamp illuminates when you: • turn the SmartKey to position 1 or 2 in the ignition lock • on vehicles with KEYLESS-GO, press the Start/Stop button once or twice If an adult occu ...

    NECK-PRO head restraints/NECKPRO luxury head restraints (except AMG vehicles)
    NECK-PRO head restraints/NECK-PRO luxury head restraints increase protection of the driver's and front-passenger's head and neck. In the event of a rear collision of a certain severity, the NE ...

    See also:

    Leather care
    Remove dust from the leather often, using a cloth or vacuum cleaner. Otherwise, particles of dust and road grime chafe in pores and folds, and lead to increased wear and premature degradation o ...

    Distributor pick-up coil - testing and renewal
    Note: This procedure applies only to the 1.6 litre 4A-FE engine. 1 Ensure the ignition is switched off. Pick-up coil check 2 Disconnect the electrical connector at the distributor and, using an ...

    Checking the coolant level
    Only check the coolant level when the vehicle is on a level surface and the engine has cooled down. Turn the SmartKey to position 2 in the ignition lock. On vehicles with KEYLESS-GO, press ...