Volkswagen Eos Owner's Manual page 315

Changing the vehicle's suspension system can change the way that the airbag system works in a
crash. For example, using tire-rim combinations not approved by Volkswagen, lowering the vehicle,
changing the stiffness of the suspension, including the springs, suspension struts, shock absorbers
etc. can change the forces that are measured by the airbag sensors and sent to the electronic control
unit. Some suspension changes can, for example, increase the force levels measured by the airbag
sensors and sent to the electronic control unit and make the airbag system deploy in crashes in which
it would not deploy if the changes had not been made. Other kinds of changes may reduce the force
levels measured by the sensors and prevent the airbag from deploying when it should.
Never install leather upholstery on a vehicle that originally had cloth upholstery. Never install cloth
upholstery on a vehicle that originally had leather upholstery. The weight-sensing mat for the
Advanced Airbag system will not work properly if different upholstery is installed on the passenger seat
than the upholstery originally installed on the vehicle when it was originally manufactured.
WARNING
Changing the vehicle's suspension including use of unapproved tire-rim combinations can
change airbag performance and increase the risk of serious personal injury in a crash.
Never install suspension components that do not have the same performance
characteristics as the components originally installed on your vehicle.
Never use tire-rim combinations that have not been approved by Volkswagen.
WARNING
Leaving the optional safety belt extender attached to the safety belt buckle on the front
passenger seat when the safety belt is not being used will prevent the Advanced Airbag
System from working properly and can increase the risk of serious personal injury in a
collision.
Leaving the extender attached to the safety belt buckle when the front seat is occupied
and the safety belt is not being used will signal to the airbag control unit that the front
passenger seat is occupied and that the safety belt is being used. The electronic control unit
for the airbag system will then receive incorrect information that will
– cause the safety belt pretensioner to deploy unnecessarily in collisions and
– cause the front passenger airbag to deploy later in collisions in which the front airbag
would otherwise be triggered earlier to help protect an unrestrained front seat passenger.
Always remove the safety belt extender when it is not needed and stow it safely.
Never use the safety belt extender to secure a child restraint.
WARNING
Items stored between the safety belt buckle and the center console can cause safety belt
buckle to send the wrong information to the airbag control unit and prevent the Advanced
Airbag System from working properly.
Always make sure that nothing can interfere with the safety belt buckles and that they are
not obstructed.