Scion xB Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Scion xB

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Scion xB Problems

Check Engine Light Due to Defective VVT-i Controller

An illuminated Check Engine Light could be caused by a defective VVT-i controller, which changes cam timing for optimal power.  Updated parts are available and the repair may be covered under the powertrain warranty.

Rough Running Conditions and Smoke From Exhaust

The head gasket may fail due to a defect in manufacturing of the cylinder block.

On this vehicle, the head bolts are known to pull the threads out of the engine block, allowing the head to slightly lift, and causing head gasket failure. Symptoms may include:

  • Overheating
  • White smoke from exhaust
  • Rough running conditions and/or inability to start or idle
  • White or cream colored oil on dipstick
  • Check engine light 
  • OBD Trouble Codes P2181, P0300

When the head gasket fails, the bolt holes for the head bolts must be repaired before the cylinder head can be remounted. 

This issue is not always preventable, but to help avoid it, never run the engine if the engine temperature is ever above the normal range. 

Excessive Oil Consumption

Drivers of the Scion xB may notice excessive oil consumption between oil changes, even to the extent of the engine oil warning light displayed on the multi-function display.

This issue is known to be caused by infrequent oil changes causing engine sludge, or worn piston rings. 

The engine should be cleaned of oil sludge, and if oil consumption remains excessive, the engine may need new piston rings, or other internal components replaced. 

To avoid this issue, change the engine oil and filter every 3,000 miles, and ensure the proper grade of oil is used. 

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Scion xB Questions

What does trip A mean on dash broad (1 answer)

On dash broad under my clock the words TRIP A just appeared

Is there a recall on: the food light covers coming off? Or the trunk hatch? (1 answer)

I have had a problem with the fog lights covers coming off, the lowest grill side snap on pieces coming off, and the trunk hatch coming off and have also noticed many other cars here in boise Idaho have the same issue.

My air conditioning stops working twice and once I started driving it cuts on (1 answer)

It'll blow hot for awhile and it'll get cold but not cold enough it's like I'll crank it up all the way and it barely blows out Any air but sometimes it'll work perfect it's confusing

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Scion xB Recalls

Passenger Frontal Air Bag Inflator Ruptures On Deployment

The passenger frontal air bag inflator may rupture on deployment, causing metal fragments to come through the air bag and injure occupants. Dealers will replace the passenger frontal air bag inflator or in some cases replace the air bag assembly free of charge to resolve the concern.

Driver's Door Power Window Switch Overheats And Melts

The driver's side power window master switch may lack enough proper lubricant to protect the sliding electrical contacts of the switch. This can cause a short circuit of the switch, leading to overheating and melting of the switch. Dealers will inspect the switches and apply lubricant to them if no abnormality is found. If a problem is found, the switch circuit board will be replaced. These inspections and repairs will be performed free of charge to resolve the concern.

Loose Accessory Installation

Vehicles with accessories (running boards, etc.) installed by SET are being recalled due to incorrect installation. Fasteners used to attach these accessories were installed with incorrect torque, and may detach resulting in unsafe driving conditions.

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Scion xB Reviews

Best car ever, and I once had a '55 Victoria Sunliner. 125k great miles. Still on original brakes after 100k. rears went til 109k. Wish it had gages, but with regular maintenance - no problems except windshields - goes through them like tissues, but this is the desert and we have lots of gravel trucking. A/c went til 115k and whole system re-done for under $1000 and cooler than ever.
My XB has 156,000 miles and gets around 26 MPG in town and 30 on the road. I have 7 friends that have an XB and all get 38 to 40 MPG around town and 42 on the road. Anyone know why some do not get the 42 MPGs? Thanks
Scion XB is a great car. Cons: Windhsield : Toss a stone at it and it will crack, so far I have about 4. More potholes, I will get even more luckier. Noise : Loud inside on the highway. Suspension : Not so great ride. Philly's potholes give me a reminder every day. Rear Hatch: Broke once, Scion issued a recall, dealer was reluctant but Scion got on the phone and made them do it...

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