Parts for your 2022 Mitsubishi Asx-Ignition leads

2022 Mitsubishi ASX ignition-leads — are they used, and what to service instead?

Ignition leads (spark plug leads) are not used on the 2022 Mitsubishi ASX. This model’s petrol engines (4B11 2.0L and, where fitted, 4B12 2.4L) run a coil-on-plug direct ignition system, where an individual “pencil” ignition coil sits directly on top of each spark plug. That design removes the need for traditional high-tension leads. Technical references supporting this include the Mitsubishi Motors ASX/RVR service manual for GA/LA-series vehicles, which specifies a direct ignition system with individual coils per cylinder on the 4B1 engines, and ignition system overviews from component suppliers such as NGK and Bosch noting that coil-on-plug setups do not use separate ignition leads and instead place the coil directly over the plug.

Why the change? Coil-on-plug improves reliability and spark accuracy by shortening the high-voltage path, reduces electromagnetic interference, and cuts down on parts that age or fail, like long rubber leads. For owners, that means there’s no ignition-leads set to replace on a 2022 ASX.

What should be serviced instead? Focus on the spark plugs and the ignition coils’ rubber boots. The ASX uses long-life iridium plugs, the maintenance schedule typically targets around 100,000 km for replacement, but owners should follow the exact interval listed in the vehicle’s owner’s manual for local conditions. During scheduled servicing, it’s smart to check each coil for cracking, heat damage, or oil ingress in the plug wells, and to ensure the boots are clean and snug on the plugs.

• Replace spark plugs at the specified kilometre/time interval, use the correct iridium spec and torque.
• If misfires, rough idle, or hard starting appear, scan for codes and inspect each coil and boot before replacing parts.
• A light smear of dielectric grease on the inside of the boot can help sealing and later removal, avoid contaminating the plug tip.

If a parts search lists “ignition leads” for a 2022 ASX, it’s almost certainly a catalogue mismatch. The correct ignition components for this model year are individual ignition coils and the appropriate spark plugs, there’s no separate lead set.

Popular questions about 2022 Mitsubishi ASX ignition-leads

Does the 2022 Mitsubishi ASX have ignition leads?
No. The 2022 ASX uses a coil-on-plug direct ignition system with one ignition coil per cylinder sitting directly on the spark plug. With this layout there are no traditional high-tension ignition leads to service or replace. This setup is documented in Mitsubishi’s ASX/RVR service literature for the 4B1-series engines and is consistent with modern ignition design from major OEM and ignition component suppliers.

What should be maintained instead of ignition leads on a 2022 ASX?
Owners should keep up with spark plug replacement at the intervals in the owner’s manual and have the ignition coils and their rubber boots inspected during routine servicing. Technicians will check for coil cracking, carbon tracking, or oil in the plug tubes, and confirm proper plug torque and gap (as specified for the iridium plugs).

How can owners spot ignition issues if there are no leads?
Symptoms are similar to older systems: misfires under load, rough idle, harder cold starts, or an illuminated check engine light. A scan tool will usually show a cylinder-specific misfire code, helping pinpoint a coil or plug issue so only the affected component is replaced.