Parts for your 2015 Subaru Exiga

The Role and Maintenance of the Timing Belt in the 2015 Subaru Exiga

The 2015 Subaru Exiga is a versatile and spacious people mover that appeals to families and those needing extra cabin room. When it comes to the maintenance of this vehicle, one component that often comes up for discussion in combustion engines is the timing belt. However, in the case of the 2015 Subaru Exiga, it's important to note that this model does not use a timing belt. Instead, it features a timing chain as part of its engine system.

Why does this matter? Well, some vehicles rely on timing belts to synchronise the rotation of the crankshaft and camshaft, ensuring the engine's valves open and close at precisely the right moment during the intake and compression strokes. Timing belts are typically made of rubber with reinforcing fibres and require periodic replacement to avoid failure, which can lead to costly engine damage.

On the other hand, the 2015 Subaru Exiga uses a timing chain, which is constructed from metal and runs inside the engine, lubricated by engine oil. Timing chains are designed to last much longer than belts and are generally considered to be more durable and reliable. This choice reflects Subaru's engineering philosophy for the Exiga, providing a maintenance-friendly and robust powertrain suitable for its daily driving and family-friendly applications.

So, what exactly does the timing chain do in the Subaru Exiga? The timing chain's purpose is to maintain the precise timing between the crankshaft and camshaft rotations. This ensures the right strokes in the engine's cylinders happen at the right time, allowing efficient combustion and smooth engine operation. Without the timing chain working properly, engine performance would suffer, fuel consumption would increase, and engine damage could occur.

When it comes to servicing the timing chain on the 2015 Subaru Exiga, it's worth noting that timing chains are generally considered "fit and forget" components. Unlike timing belts, which come with recommended replacement intervals (often between 60,000 and 100,000 kilometres), timing chains typically last the life of the vehicle, providing the engine oil is clean and regularly changed. Neglecting oil changes or using poor-quality oil can lead to premature wear or stretching of the timing chain, potentially causing engine noise or misalignment issues over time.

While the timing chain itself may not require frequent direct maintenance, some related components and services help keep it in top shape:

• Regular oil changes: Using the right grade and quality of engine oil recommended by Subaru is crucial. Clean engine oil keeps the timing chain lubricated and prevents excessive wear.
• Timing chain tensioner inspection: The tensioner ensures that the chain remains taut and properly aligned. Over time, tensioners can wear or fail, causing rattling noises on startup or irregular timing, so it pays to have this checked during major services.
• Guide rails and sprocket condition: These components help guide and support the timing chain. Wear here might necessitate replacement to avoid chain slack or jumping teeth.

Fortunately, these inspections are typically covered under Subaru's routine maintenance schedules and only require attention if symptoms arise. Some warning signs that the timing chain or related components may need attention include a rattling sound from the engine, especially at cold starts, misfires, or the 'check engine' warning light being triggered.

If any issues are detected, it is advisable to have the timing chain system serviced by a qualified Subaru technician. Attempting DIY repairs or delaying professional attention could lead to more significant engine damage and higher repair bills. With proper care, however, the timing chain system in a 2015 Subaru Exiga will provide years of trouble-free service, letting drivers enjoy their spacious and comfortable ride without worry.

To round off the picture, the decision by Subaru to equip the 2015 Exiga with a timing chain instead of a belt is a reflection of their commitment to reliability and lower maintenance costs for owners, particularly important for a family-style vehicle. By eliminating the need for timing belt replacements, Subaru has simplified one aspect of ongoing maintenance, while still ensuring precise engine performance.

For anyone shopping for or servicing a 2015 Subaru Exiga, knowing the difference between a timing belt and timing chain and understanding the maintenance behind the latter is useful. The timing chain is one less thing to worry about in your maintenance schedule, but staying on top of routine oil changes and listening out for any unusual engine noises will help keep this critical component running smoothly for many kilometres to come.