Manual Saab 9-5 - 2009 (page 145 of 272) (English)

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145Starting and driving

Important considerations with

catalytic converters

The catalytic converter is an emission-con-

trol 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 con-

tinues 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 accor-

dance 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.

• If the engine fails to start (in very cold

weather or if the battery is flat), the car can

be push started (manual gearbox only) or

started using jumper cables 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.

• Never park the car on dry grass or other

combustible material. The catalytic

converter gets very hot and could there-

fore 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.

Failure to follow these directions could

result in the catalytic converter and associ-

ated components being damaged, and

could represent a breach of the warranty

conditions.

NOTICE

Use only unleaded gasoline. Leaded gas-

oline is detrimental to the catalyst and

oxygen sensor and will seriously impair

the function of the catalytic converter.

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.

IB3879

Oxygen-sensor-controlled

injection system

1 Engine control module

2 Oxygen sensor (lambda probe)

3 Catalytic converters

95_US_MY09.book Page 145 Tuesday, April 15, 2008 11:03 AM

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Saab 9-5 - 2009 Manual

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