2003 Saab 9-5

Certain 2000-2002 Saab 9-3 and 9-5 model vehicles equipped with 4-cylinder gasoline engines, and 2001-2003 9-5 models equipped with 6-cylinder gasoline engines may experience overheating and burnout of the Isolated Gated Bipolar Transistor (IGBT) within the Ignition Discharge Module (IDM) due to increased susceptibility to electrical loads. Overheating of the IGBT occurs most often at engine start-up but may also occur while the engine is running. When the IDM fails on a 4-cylinder while it is running, the engine may stall without warning, with no ability to be restarted. When the IDM fails on a 6-cylinder engine while it is running, the driver will initially experience reduced power and rough operation because the engine will only be running on three cylinders. The check engine light will flash. If the driver continues, unburnt fuel in the exhaust can cause thermal damage to the catalytic converter. The engine may stall and not restart. Correction: Dealers will inspect and, if required, replace the IDM.