Volvo XC90 owner manual Maintaining your vehicle, Owner maintenance, Emission inspection readiness

09 Maintenance and servicing

		Maintaining your vehicle	09
Owner maintenance	As needed	inspection has replaced the tailpipe emission
Periodic maintenance requirements and inter-	• Wash the vehicle, including the undercar-	test.
vals are described in your vehicle's Warranty	riage, to reduce wear that can be caused	How can my vehicle fail OBD II emission
and Service Records Information booklet.	by a buildup of dirt, and corrosion that can
		inspection?
	be caused by salt residues.
The following points can be carried out
	• Clean leaves and twigs from air intake	Your vehicle can fail OBD II emission inspec-
between the normally scheduled maintenance
	vents at the base of the windshield, and	tion for any of the following reasons.
services.
	from other places where they may collect.	• If your Check Engine (MIL) light is lit, your
Each time the vehicle is refueled	• Complete service information for qualified	vehicle may fail inspection.
• Check the engine oil level	technicians is available online for purchase	• If your vehicle's Check Engine light was lit,
• Clean the windshield, windshield wipers,	or subscription at www.volvote-	but went out without any action on your
	chinfo.com.
headlights, and tail lights		part, OBD II will still have a recorded fault.
Monthly		Your vehicle may pass or fail, depending
	Emission inspection readiness	on the inspection practices in your area.
• Check cold tire pressure in all tires. Inspect	What is an Onboard Diagnostic System	• If you had recent service that required dis-
the tires for wear.		connecting the battery, OBD II diagnostic
• Check that engine coolant and other fluid	(OBD II)?	information may be incomplete and "not
levels are between the	OBD II is part of your vehicle's computerized	ready" for inspection. A vehicle that is not
indicated "min" and "max" markings.	engine management system. It stores diagnos-	ready may fail inspection.
• Clean interior glass surfaces with a glass	tic information about your vehicle's emission	How can I prepare for my next OBD II
	controls. It can light the Check Engine light
cleaner and soft paper towels.		emission inspection?
	(MIL) if it detects an emission control "fault." A
• Wipe driver information displays with a soft
		• If your Check Engine (MIL) light is lit – or
	"fault" is a component or system that is not
cloth.	performing within an expected range. A fault	was lit but went out without service, have
• Visually inspect battery terminals for cor-		your vehicle diagnosed and, if necessary,
	may be permanent or temporary. OBD II will
rosion. Corrosion may indicate a loose ter-	store a message about any fault.	serviced by a qualified Volvo technician.
minal connector, or a battery near the end		• If you recently had service for a lit Check
of its useful service life. Consult a trained	How do states use OBD II for emission	Engine light, or if you had service that
and qualified Volvo service technician for	inspections?	required disconnecting the battery, a
additional information.	Many states connect a computer directly to a	period of driving is necessary to bring the
	vehicle's OBD II system. The inspector can	OBD II system to "ready" for inspection. A
	then read "faults." In some states, this type of	half-hour trip of mixed stop-and-go/high-

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