2006 Saab 9-5 Owner's Manual - Page 147

Starting and driving Important considerations with catalytic converters NOTICE Use only unleaded gasoline. Leaded gasoline is detrimental to the catalyst and oxygen sensor and will seriously impair the function of the catalytic converter. The catalytic converter is an emission-control device incorporated in the car's exhaust system. It consists of a metal canister with a honeycomb insert, the cells of which have walls coated in a catalytic layer (mixture of precious metals). To ensure that the catalytic converter continues to function properly, and also to avoid damage to the converter and its associated components, the following points must be observed: • Have the car serviced regularly in accordance with the service program. The fuel and ignition systems are particularly important in this context. • Always be alert to any misfiring of the engine (not running on all cylinders) and any loss of power or performance. At the first sign of a malfunction, reduce speed and take the car to a workshop as soon as possible. We recommend that you contact an authorized Saab dealer. 147 1 2 3 2 Oxygen-sensor-controlled injection system 1 Engine control module 2 Oxygen sensor (lambda probe) 3 Catalytic converters IB3879 3 • Never park the car on dry grass or other combustible material. The catalytic converter gets very hot and could therefore start a fire. • Never drive off if the engine is misfiring. • If you jump start the car when the engine is already up to normal temperature, the engine must start to run on all cylinders. Stop jump-starting if the engine fails to start immediately. NOTICE If the car runs out of fuel, it is possible for air to get into the fuel system. If this happens, the catalytic converter may overheat and be damaged. Failure to follow these directions could result in the catalytic converter and associated components being damaged, and could represent a breach of the warranty conditions. • If the engine fails to start (in very cold weather or if the battery is flat), the car can be  started (manual gearbox only) or started using 59 56  to a donor battery. However, as soon as you have started the engine, it is important that it runs on all cylinders. If it is misfiring, allow it to idle for up to five minutes to give it time to settle and run smoothly. If, after this time, the engine still fails to run properly, turn off the engine and get in touch with a workshop for advice. We recommend that you contact an authorized Saab dealer.