Parts for your 2011 Toyota Vitz|yaris-Ignition coils

2011 Toyota Vitz/Yaris Ignition Coils

Yes—ignition coils are fitted to the 2011 Toyota Vitz/Yaris petrol models. Toyota technical sources, including the Toyota Repair Manual for NSP/NCP platforms and the Toyota Electronic Parts Catalog, specify coil-on-plug ignition for common 2011 engines such as the 1KR-FE (1.0L), 1NR-FE (1.3L), and 1NZ-FE (1.5L). Typical Toyota coil part numbers cited in those sources include 90919-02258 and 90919-02244 (application varies by engine and market). Only the rare 1ND-TV 1.4 D-4D diesel variant doesn’t use ignition coils because diesels ignite fuel by compression, not spark.

On the 2011 Vitz/Yaris petrol engines, the ignition coil’s job is to step up battery voltage to the high voltage needed to fire the spark plug, with each cylinder getting its own coil mounted directly on the plug. The engine control unit triggers each coil precisely, delivering a clean spark for smooth running, decent fuel economy, and low emissions. Coil-on-plug also cuts energy losses in old-school leads and keeps everything compact under the bonnet.

While coils aren’t a scheduled “wear” item, they live in a hot, vibrating spot and eventually age. During regular servicing—especially when spark plugs are replaced (often around the 100,000 km mark on iridium-plug engines, check the owner’s manual)—it’s smart to inspect the coils and boots, and ensure there’s no oil in the plug tubes from a rocker cover gasket leak. Poor-quality fuel, moisture, and old plugs can stress coils, so keeping the basics right helps the lot last longer.

• Common signs of a failing coil: rough idle, misfire under load, sluggish acceleration, hard starting, increased fuel use, and a Check Engine Light with misfire codes (P0300–P0304) or coil circuit faults (P0351–P0354).

If a coil plays up, replacing just the faulty unit is fine, but high-kilometre engines may benefit from doing the set to keep the tune even. Stick with genuine or reputable aftermarket coils matched to your engine code (1KR-FE, 1NR-FE, or 1NZ-FE). When fitting, disconnect the battery, keep the coil and plug wells clean and dry, seat the boots properly, and follow the factory torque specs for the plug and the coil hold-down. A quick road test and scan for any returning codes will confirm the job’s a good one.

• Service tips: replace aged plugs on time, fix oil leaks promptly, avoid washing water into the plug wells, and don’t mix-and-match questionable coils.

FAQs

How many ignition coils does a 2011 Vitz/Yaris have?
It’s one coil per cylinder. That means three coils on the 1KR-FE 1.0L (3-cylinder) and four coils on the 1NR-FE 1.3L or 1NZ-FE 1.5L (4-cylinder). The diesel 1ND-TV doesn’t use ignition coils at all.

How often should the ignition coils be replaced?
There’s no fixed interval. Coils are replaced when symptoms or diagnostics point to a fault. Inspect them during spark plug services and replace any that show cracking, tracking, or cause misfires. Keeping fresh plugs helps coils live longer.

Are coils interchangeable across all 2011 Vitz/Yaris engines?
Not necessarily. Part numbers vary by engine and market. Match the coil to the engine code and build month using the vehicle’s VIN and a trusted parts catalogue to avoid fitment or performance issues.