1997 Toyota Previa Owners Manual - Page 138

Engine exhaust cautions zKeep your engine in good running order. Malfunctions in the engine electrical system, electronic ignition system/distributor ignition system could cause an extremely high three-way catalytic converter temperature. zIf the engine becomes difficult to start or stalls frequently, take your vehicle in for a check-up as soon as possible. Remember, your Toyota dealer knows your vehicle and its three-way catalytic converter. zTo ensure that the three-way catalytic converter and the entire emission control system operate properly, your vehicle must receive the periodic inspections required by the Toyota Maintenance Schedule. For scheduled maintenance information, refer to the separate "Owner's Manual Supplement/Maintenance Schedule". ! CAUTION S Avoid inhaling the engine exhaust. It contains carbon monoxide, which is a colorless and odorless gas. It can cause unconsciousness or even death. S Make sure the exhaust system has no holes or loose connections. The system should be checked from time to time. If you hit something, or notice a change in the sound of the exhaust, have the system checked immediately. S Do not run the engine in a garage or enclosed area except for the time needed to drive the vehicle in or out. The exhaust gases cannot escape, making this a paticularly dangerous situation. S Do not remain for a long time in a parked vehicle with the engine running. If it is unavoidable, however, do so only in an unconfined area and adjust the heating or cooling system to force outside air into the vehicle. S Keep the back door closed while driving. An open or unsealed back door, may cause exhaust gases to be drawn into the vehicle. If you must drive with the back door open to accommodate a large object, close the windows, open all the instrument panel vents and have the heating or cooling system deliver fresh air into the vehicle by turning the fan to high speed with the air intake control leverset at the OUTSIDE AIR position. S If you smell exhaust fumes in the vehicle, drive with the windows open and the back door closed. Have the cause immediately located and corrected. 132