Volvo XC90 2015-2021 Owners Manual / Starting and driving / Emission controls

Volvo XC90: Starting and driving / Emission controls

Three-way catalytic converter

  • Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition systems, may cause unusually high threeway catalytic converter temperatures. Do not continue to operate your vehicle if you detect engine misfire, noticeable loss of power or other unusual operating conditions, such as engine overheating or backfiring. A properly tuned engine will help avoid malfunctions that could damage the three-way catalytic converter.
  • Do not park your vehicle over combustible materials, such as grass or leaves, which can come into contact with the hot exhaust system and cause such materials to ignite under certain wind and weather conditions.
  • Excessive starter cranking (in excess of one minute), or an intermittently firing or flooded engine can cause three-way catalytic converter or exhaust system overheating.
  • Remember that tampering or unauthorized modifications to the engine, the Engine Control Module, or the vehicle may be illegal and can cause three-way catalytic converter or exhaust system overheating. This includes: altering fuel injection settings or components, altering emission system components or location or removing components, and/or repeated use of leaded fuel.

NOTE

Unleaded fuel is required for vehicles with three-way catalytic converters.

Heated oxygen sensors

The heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fed into a control module that continuously monitors engine functions and controls fuel injection. The ratio of fuel to air into the engine is continuously adjusted for efficient combustion to help reduce harmful emissions.

    Octane rating

    Volvo requires premium fuel (91 octane1 or higher) for all T5, T6 and T8 engines, and recommends AKI 93 for optimal performance and fuel economy. See decal examples in illustrations 1 and 2...

    Overheating of engine and transmission

    In certain driving conditions, such as driving in mountainous areas or hot weather, there is a risk of the engine or transmission overheating, especially when carrying heavy loads...

    Other information:

    Volvo XC90 2015-2021 Owners Manual: Saving new reference values for tire inflation pressure monitoring


    In order for the tire inflation pressure monitoring system1 to function correctly, inflation pressure reference values must be saved correctly. To help ensure that the system can correctly alert the driver of low inflation pressure, this must be done each time the tires are changed or the inflation pressure is adjusted...

    Volvo XC90 2015-2021 Owners Manual: Distance Alert limitations


    Distance Alert functionality may be reduced in certain situations. The function is only available in vehicles that can display information on the windshield with a head-up display *. WARNING Detection ability may be affected by vehicle size, e.g. motorcycles, which can cause the warning light to come on at a shorter time interval than that set or cause the warning to be temporarily absent...

      Categories

      Door and seat belt reminders

      This system is intended to remind occupants to buckle their seat belts and to alert the driver if a door, hood or other opening (trunk, sunroof, etc.) is open.

      Graphics in the instrument panel

      Volvo XC90. Door and seat belt reminders

      Graphics in the instrument panel with various types of warnings. The warning colors for the doors/tailgate vary depending on the vehicle's speed.

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