Owner's Manual Cadillac BLS - IFS Europe BV

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460_OM_MY09.book Page 130 Wednesday, April 2, 2008 10:32 AM 130 Starting and driving Limp-home The engine management system has a diagnostic feature that checks a number of internal functions. If a fault is detected in the throttle valve, the engine management system will set the throttle system to the limp-home mode. This means: • idling control will be poor (uneven idling since regulated by ignition and fuel supply) • engine performance will be reduced • the cruise control will not function • the capacity of the A/C compressor will be limited. The "Engine malfunction (CHECK ENGINE)" indicator illuminates in the main instrument panel if the diagnostics function detects a fault in the engine management system. See page 63. The car should be checked by a workshop as soon as possible. We recommend that you contact an authorised Cadillac workshop. NOTICE If "Engine malfunction (CHECK ENGINE)" starts to flash (indicating that the engine is seriously misfiring and there is a risk of catalytic converter damage) release the accelerator slightly. The warning light may then either go out or shine with a steady glow. If the light continues to flash despite easing off the accelerator, you may continue to drive the car. It is however recommended that you drive the car as gently as allowed by the current traffic situation. Have the car checked at a workshop as soon as possible. We recommend that you contact an authorised Cadillac workshop. Important information concerning petrol-engined cars 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 (precious metal alloy). NOTICE Use only unleaded petrol. Leaded petrol is detrimental to the catalyst and oxygen sensor and will seriously impair the function of the catalytic converter. 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:
460_OM_MY09.book Page 131 Wednesday, April 2, 2008 10:32 AM Starting and driving 131 • Have the car serviced regularly in accordance with the service programme. • 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 authorised Cadillac workshop. • If the engine fails to start (in severe cold or if the battery is flat), the car can be bump started (manual gearbox only) or started using jump leads 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 5 minutes to give it time to settle and run smoothly. If, after this time, the engine still fails to run properly, switch off the engine to avoid serious damage to the catalytic converter. We recommend that you contact an authorised Cadillac workshop for advice. Engine management system with catalytic converter 1 Engine control module 2 Oxygen sensor (lambda probe) 3 Catalytic converter • Never park the car in dry grass or on 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 bump start the car when the engine is already at normal working temperature, the engine must start to run on all cylinders. Abort bump starting if the engine fails to start immediately. Failure to strictly follow these instructions can result in damage to the catalytic converter and associated components, and could represent a breach of the warranty conditions. NOTICE If the car runs out of petrol, air may be drawn in with the fuel, which, in turn, can cause the catalytic converter to be damaged by overheating. WARNING If the engine is being run with the car on a rolling road or dynamometer, to ensure adequate cooling, air must be blown into the engine compartment and under the car at a rate equivalent to the ram-air effect that would obtain at the corresponding road speed.
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Owner's Manual Cadillac BLS - IFS Europe BV

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