Environmental Protection

The devices used to reduce emissions on petrol engines are:

• The three-way catalytic converter;
• The lambda sensor;
• The fuel vapour recovery system.

The engine must never be run, even briefly for testing, with one or more spark plugs disconnected.

The devices used to reduce emissions on diesel engines are:

• The oxidation catalytic converter;
• The exhaust gas recirculation (EGR) system;
• The lambda sensor;
• The particulate filter (DPF) (where fitted, as an alternative to the lambda sensor).

This is a mechanical filter located in the exhaust system that traps the carbon particles contained in the exhaust gases of the diesel engine.

The filter's function is to almost completely eliminate carbon particle emissions in accordance with current and future legal requirements.

During normal use of the vehicle, the engine control unit records a range of usage data (operating time, type of journey, temperatures reached, etc.) and calculates the amount of particles accumulated in the filter.

As the filter is a collecting system, it must be regenerated (cleaned) periodically by burning off the carbon particles. The regeneration process is controlled automatically by the engine control unit, depending on the filter loading condition and the vehicle's operating conditions.

During regeneration the following may occur: limited increase in idle speed, activation of the electric cooling fan, limited increase in smoke, high temperatures at the exhaust.

These situations are not faults and have no effect on the vehicle's behaviour or on the environment.

If the warning lighton the
instrument panel (together with the message on the display) comes on, please refer to the chapter "Warning lights and indicators".

During normal operation the catalytic converter and the particulate filter (DPF) reach high temperatures.

The vehicle should therefore not be parked on flammable material (grass, dry leaves, pine needles, etc.): fire hazard.