Parts for your 2012 Subaru Exiga-Ignition leads

Ignition Leads for the 2012 Subaru Exiga: What You Need to Know

The 2012 Subaru Exiga is a reliable and versatile family wagon that fits well with the needs of Aussie drivers looking for space and smooth performance. When it comes to ignition systems, some car owners might wonder about the role and relevance of ignition leads, especially if they are used to the older style of ignition components. So, does the 2012 Subaru Exiga actually use ignition leads? And if it does, what should owners know about them?

Firstly, the 2012 Subaru Exiga, like many modern vehicles, does not use traditional ignition leads. This is because it features a coil-on-plug ignition system, a more advanced setup that Subaru and many other manufacturers have adopted to improve reliability, efficiency, and performance. Ignition leads, often called spark plug wires, are used mainly in older or simpler ignition setups where a single ignition coil sends high-voltage current through the leads to the spark plugs. However, in coil-on-plug systems, each spark plug has its own ignition coil mounted directly on top of it. This design negates the need for ignition leads entirely.

So why did Subaru move away from ignition leads in the Exiga? There are several reasons behind this shift:

• Improved Spark Delivery - Coil-on-plug systems provide a more direct and reliable spark at the plug, improving combustion efficiency and engine performance.
• Reduced Electrical Interference - Traditional ignition leads can sometimes emit electromagnetic interference, which can affect the vehicle's electronic systems. Coil-on-plug setups help minimise this problem.
• Lower Maintenance - Ignition leads can degrade over time due to heat, moisture, and exposure to engine fluids, requiring regular inspection and replacement. Coil-on-plug systems, being more integrated, generally need less attention.
• Better Durability - Without ignition leads exposed to harsh engine bay conditions, there are fewer points of failure and leakage, contributing to longer life and increased reliability.

Understanding these advantages helps make sense of why the 2012 Subaru Exiga's ignition system does not rely on ignition leads. Instead, it features individual ignition coils for each spark plug, which makes the ignition system simpler to maintain from a leads perspective but does require attention to the coils and spark plugs themselves.

For Subaru Exiga owners, this means the typical advice about ignition leads - checking for cracks, wear, or corrosion - is no longer relevant. Instead, servicing focuses on ensuring the ignition coils and spark plugs are in good condition. Ignition coils should be inspected if an engine misfire or rough idle appears, and spark plugs should be replaced as per the recommended service intervals, generally every 60,000 to 100,000 kilometres depending on the plug type.

Even with coil-on-plug designs, it's essential to keep an eye on the ignition system's health. Faulty ignition coils can cause poor engine performance, reduced fuel efficiency, and frustrating drivability issues like stumbling or hesitation. Replacing a faulty coil is usually straightforward and can bring the engine back to smooth running quickly.

When it comes to maintenance, Subaru recommends following the service schedule found in the owner's manual. Regular spark plug replacement and diagnostic checks ensure that the whole ignition system, including coils, remains healthy. If the Exiga is used in tough driving conditions, like frequent short trips, dusty roads or extreme temperatures, paying attention to engine performance and addressing any signs of ignition trouble early can go a long way.

So while you won't be dealing with ignition leads on the 2012 Subaru Exiga, understanding this difference helps avoid unnecessary maintenance worries and focuses your attention on the parts that do matter for this vehicle's ignition system. Coil-on-plug technology really represents a step forward in automotive ignition design, offering better performance and peace of mind for owners and mechanics alike.