Volvo XC90 2015-2022 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 2015-2022 Owners Manual: Starting and switching off the climate retaining function when parking


    (Option/accessory.) The climate retaining function maintains the climate settings in the vehicle after the engine has been switched off. The function can be activated in the center display. Tap the symbol in the center of the climate bar to open Climate view in the center display...

    Volvo XC90 2015-2022 Owners Manual: Using passing assistance


    Passing assistance can be used with Adaptive Cruise Control* or Pilot Assist*. Several conditions must be met for passing assistance to be possible. In order to activate passing assistance: your vehicle must be following a vehicle ahead (target vehicle) your vehicle's current speed must be at least 70 km/h (43 mph) the set speed must be high enough to safely pass another vehicle...

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