Parts for your 2016 Toyota Wish-Ignition leads

Are ignition leads used on the 2016 Toyota Wish?

They’re not. According to Toyota’s own technical literature for the ZR-series engines used in the 2016 Toyota Wish (2ZR-FE/2ZR-FAE), the vehicle runs a direct ignition, coil-on-plug (COP) system. The Toyota New Car Features (NCF) manual for the ZR engines describes individual ignition coils mounted directly on each spark plug with built-in igniters, and the Toyota Repair Manual and Electronic Parts Catalogue (EPC) for the ZGE2# Wish list no high-tension (HT) spark plug leads for this model. That means the traditional ignition-leads setup simply isn’t fitted or required on this car.

With COP, each cylinder has its own pencil-style coil that sits over the spark plug. The coil fires the plug directly, so there’s no distributor and no bundle of HT leads draped across the rocker cover. This design improves spark energy and timing accuracy, reduces electrical losses, and cuts down on misfire risk caused by old or arcing leads. It also tidies up the engine bay and removes a common wear item from the maintenance list.

So while “ignition leads” aren’t a thing on a 2016 Toyota Wish, there are still a few ignition-related items worth a look during servicing:

• Spark plugs: The 2ZR engines use long-life iridium plugs. Depending on driving conditions and the exact schedule, expect replacement somewhere around the 100,000–160,000 km mark. Always use the correct spec and gap as per the Toyota service manual.
• Coil boots and seals: Each coil has a rubber boot that insulates the connection to the plug. Check for hardening, cracking or carbon tracking. Replace boots if they’re brittle or marked.
• Oil or water in plug tubes: A leaking rocker cover gasket can pool oil in the plug wells and cause misfires. Likewise, avoid blasting water into the coil area when cleaning the engine bay.
• Misfire diagnosis: If there’s a stumble or a P0300–P0304 code, inspect plugs first, then swap coils between cylinders to see if the fault follows the coil. Replace any weak coil with quality parts.
• Electrical connectors: Make sure coil connectors are clean and firmly seated. A tiny bit of dielectric grease on the boot can help with future removal and sealing.

Bottom line: the 2016 Toyota Wish doesn’t use ignition leads. Keeping iridium plugs fresh, coils healthy, and the plug tubes clean will keep the ignition system crisp and reliable across Aussie and Kiwi kilometres.

Popular questions about 2016 Toyota Wish ignition-leads

Does the 2016 Toyota Wish have ignition leads?
No. The 2016 Wish uses a coil-on-plug ignition system on its ZR-series engine, so there are no traditional high-tension ignition leads to replace. Each cylinder has its own coil sitting directly on the spark plug.

What should be serviced instead of ignition leads on a 2016 Wish?
Focus on iridium spark plugs, the coil boots, and the coils themselves. Check for oil or moisture in the plug tubes, make sure connectors are snug, and follow Toyota’s plug replacement interval listed in the maintenance schedule.

Can ignition leads be retrofitted to a coil-on-plug 2016 Wish?
There’s no benefit and it’s not a supported configuration. The engine management, wiring, and hardware are designed for coil-on-plug. If there’s a misfire, diagnose plugs and coils rather than trying to add leads.