2006 Saab 9-5 Owner's Manual - Page 66

66 Instruments and controls If the coolant level falls below the MIN mark, the Saab Information Display (SID) will display the message "Coolant level low. Refill.". NOTICE If the needle, despite the above action, enters the red zone, stop the car immediately, let the engine idle. If the needle stays in the red zone, stop the engine. Check fuse 1 (radiator fan) in the fuse panel under the hood, see page 223. If the needle repeatedly enters the red zone, stop the car as soon as it is safe to do so and check the coolant level by looking at the level visible through the plastic tank - do not remove the cap. WARNING Never open the cap of the expansion tank completely when the engine is hot, open with care. The pressure in the cooling-system can cause hot coolant and steam to be released. Failure to heed this warning may result in personal injury. Pressure gauge The turbo gauge indicates the air volume for combustion, which is equivalent to the engine load. Under certain barometric conditions, the needle may enter the first part of the red zone without necessarily indicating that a fault has arisen. If the needle repeatedly enters the red zone and the engine at the same time loses power because the monitoring system is limiting boost pressure, you should contact a workshop immediately. We recommend that you contact an authorised Saab workshop. IB3852