Under the hood of the current Scion xB, we take a quick tour to outline its features and maintenance points.
Starting in the 2008 model year the larger second generation xB began using a larger 2.4 liter 4-cylinder engine borrowed from the Camry. This “big-bock” Toyota engine has a lot more torque and power than the 1.5 liter engine that powered the first generation xB. The engine puts out 158hp and 162 lb. ft. of torque. With Toyota’s VVTi variable valve timing the power curve is nice and linear.
Looking around the engine compartment we see the oil fill dipstick is located right up in front with a yellow pull ring. Our vehicle has the optional 4-speed automatic transmission so it also has a transmission fluid dipstick just to the side of the air filter assembly with a blue colored pull ring.
Washer fluid and coolant reservoirs are located in easy view on the passenger side of the engine bay. They are both easily checked visually as the tanks are semi-transparent. Replacement of headlamps is relatively easy on the xB with both being accessible with little drama as seen in the photos.
The air filter box is also an easy access item. Always take care not to loosen connection to the air flow sensor which is located on the air inlet neck on the top cover. The drive by wire throttle body is located down below and behind the engine. This is only a hassle if you plan on putting in a cold air intake, requiring some additional reaching and tugging.
The fuse box is also easy to service, being located next to the air filter box and engine control unit (ECU). Having the ECU right there next to the fuse box and battery is a great way for Toyota to reduce the amount of wiring and complexity in the system. It saves weight too.
Brake fluid is a little trickier to service as the master cylinder reservoir is set back under the splash panel. You would want to use a long tube funnel to top this off for best results. Additionally, the strut towers are set back underneath. So if and when you ever change those out or add a tower brace, plan on spending some extra time gaining access to them. The plastic splash panel is removable which will facilitate that.
The second generation Scion xB also uses a larger battery than before, to crank that larger engine. The alternator and starter are both located up high where they are easily accessed for service should they even need replacement. Best of all the accessory drive belt can be replaced without disassembling the motor mount which is the case with many FWD cars.
Lastly one word of caution. The exhaust system is right up front and center. Though it has heat shields it is the hottest part of the engine after it has been running. Always be careful not to touch or brush up against the heat shields when you are accessing the engine.
