See also:

Diesel particulate filter system
Complementary to the catalytic converter, this filter makes an active contribution to the preservation of air quality by the retaining of the unburnt pollutant particles. Black exhaust fumes are t ...

Keys
Electronic immobiliser key The key operates all the vehicle’s locks as well as the ignition. The key can be used to deactivate the front passenger’s airbag. See “Airbags”. Central locking using t ...

Anti-theft protection
Electronic engine immobiliser The key contains an electronic chip which has a special code. When the ignition is switched on, this code must be recognised in order for starting to be possible. T ...