The vehicle is equipped with an airbag for the driver and front passenger, as well as side airbags, head airbags and seat belt tensioners. Airbag locations are usually labeled «SRS Airbag».
A rear-facing child seat must not be placed on the front passenger seat, except for a special child seat in combination with automatic child seat recognition.
Attention! For safety reasons, it is not allowed to carry out any work on the parts belonging to the airbag and seat belt pretensioner system.
Before removing and installing the driver's airbag unit:
1. Disconnect the negative cable (-) battery with the ignition off. The cabin air filter box must first be removed.
Before disconnecting the cable, find out the security code of the radio, if any, refer to Section Replacing the battery.
2. Isolate the negative pole (-) battery to prevent accidental contact.
3. Set the wheels straight and the steering wheel in the middle position.
4. Before removing (touch) airbag unit, discharge the electrostatic charge. To do this, briefly touch the lock of the door or body.
5. When connecting the battery, there should be no people inside the car.
General security measures
Never install airbag components of another vehicle or a different steering wheel. When replacing, install only new parts.
Even after a minor accident that did not deploy the airbag, have the airbag system and belt tensioner checked by a Mercedes workshop.
After the airbag in the steering wheel is deployed, be sure to replace the steering wheel, if the side airbag is deployed, replace the cover in the door lining, if the front passenger airbag is deployed, replace the instrument panel.
The airbag control device must always be replaced after three deployments.
The airbag can only be checked at a service station. In no case should a test lamp, voltmeter or ohmmeter be used to check the pillow.
Airbag elements that have fallen from a height of more than 0.5 m must be replaced without fail.
Protect airbag components from heat or fire. Do not expose airbag components to temperatures above +100°C.
Protect the airbag from contact with water, grease or oil. If water, grease or oil gets in, clean the pillow immediately.
After removing the airbag, store it with the soft side facing up. When stored back, there is a danger of being thrown upwards if the gas generator is accidentally ignited. This creates a risk of injury.
If work is interrupted, the airbag must not be left unattended.
Do not disassemble the airbag unit. If there is a defect, it will be replaced as a set. Since the pillow contains an explosive, it must be stored securely under supervision.
Airbag components must be disposed of before scrapping the vehicle. Disposal must be carried out by specialized enterprises.
When carrying out any work on the car using electric welding, it is first necessary to disconnect the connector of the airbag control unit with the battery disconnected.