Does a Lexus ES 350 have spark plugs?
Yes. The Lexus ES 350 has spark plugs—six in total, one for each cylinder—operating with a coil-on-plug ignition system.
In the ES 350's 3.5-liter V6 engine (the 2GR-FE family), each cylinder uses its own spark plug and ignition coil. The plugs are typically iridium-tipped in recent models, designed for long life. Replacement intervals can vary by year and market, so consult the owner's manual or a Lexus dealer for the exact schedule.
Spark plugs in the ES 350: basics
Key facts about the ES 350's spark plugs include:
- Six spark plugs total — one per cylinder.
- Ignition is coil-on-plug, with an individual ignition coil per plug.
- Plugs are typically iridium-tipped for longevity, though exact type may vary by model year and region.
These points confirm that the ES 350 relies on per-cylinder ignition and a standard six-plug layout inside the engine bay.
Replacement schedule and care
Before listing the typical service window, note that schedules depend on fuel quality, driving conditions, and model year:
- Typical replacement interval: commonly around 120,000 miles under normal driving for iridium-tipped plugs, but always check your owner's manual for your specific year and market.
- Signs you may need replacement sooner: persistent misfires, rough idle, reduced power or fuel economy, or difficulty starting.
- Best practice: use the recommended plug type and torque specification, and replace the coil boots if they show signs of wear.
Following the manufacturer guidance helps maintain smooth operation and avoids misfires.
Signs of wear and maintenance tips
Before listing common symptoms, consider these factors that affect spark plug life:
- Driving style and conditions (short trips, high-speed driving, heavy loads can shorten life).
- Quality of fuel and oil changes; avoid contamination that can affect plugs.
- Ignition system integrity, including coils and wires, as problems can mimic or accelerate spark plug wear.
Being attentive to symptoms and periodic inspections can prevent unexpected failures.
Practical notes for ES 350 owners
Owners should confirm exact specifications with their dealer or owner’s manual, as plugs and intervals can vary across model years and markets. Adhering to Toyota/Lexus service recommendations helps preserve performance and reliability.
Summary
In short, yes — the Lexus ES 350 uses six spark plugs, one for each cylinder, with a coil-on-plug ignition system. The typical replacement interval for iridium-tipped plugs is around 120,000 miles under normal conditions, but always verify the schedule for your specific vehicle. Regular maintenance and attention to signs of wear will help keep the ES 350 running smoothly.
When to change spark plugs on Lexus ES 350?
You should change the spark plugs on a Lexus ES 350 every 60,000 miles or 72 months, according to the maintenance schedule. This recommendation applies to newer models, as older models with a different engine may have a longer interval. Some signs of worn-out spark plugs include difficulty starting, reduced fuel efficiency, and poor acceleration.
You can watch this video to learn how to change spark plugs on a similar engine: 55sThe Car Care NutYouTube · Mar 24, 2021
When to change
- Scheduled maintenance: The recommended interval is every 60,000 miles or 72 months.
- Model year: For newer ES 350 models with the 2GR-FKS engine, the 60,000-mile interval is standard. Older models with the 2GR-FE engine may have a 100,000-mile interval.
Signs of worn-out spark plugs
- Difficulty starting: The engine hesitates or struggles to start.
- Poor acceleration: The vehicle's acceleration is not as smooth as it used to be.
- Reduced fuel efficiency: You notice a decrease in miles per gallon.
- Misfiring: The engine experiences inconsistent combustion or misfires.
- Check Engine Light: The "check engine" light comes on, which can be a sign of various issues, including spark plug problems.
What is the common problem in Lexus ES 350?
Common problems reported for the Lexus ES 350 include oil leaks, issues with the infotainment and navigation systems, a melting dashboard, and potential engine problems like blown cylinder head gaskets, especially in certain model years. Owners have also noted problems with brakes, window or sunroof malfunctions, and steering issues.
Engine and mechanical issues
- Oil leaks: Leaks from the engine area, often due to faulty gaskets or seals, are frequently reported.
- Engine problems: Issues such as blown cylinder head gaskets (particularly in 2007-2009 models), ticking or knocking sounds, and general engine problems can occur.
- Brakes: Some owners report premature wear on brake pads and rotors, as well as vibration or pulsation during braking.
- Steering: Problems with the steering system have also been cited.
- Transmission: Major transmission issues have been reported in some cases.
Electrical and infotainment problems
- Melting dashboard: This is a well-known issue on some models, where the dashboard material degrades and melts.
- Infotainment and navigation: Common complaints include issues with the infotainment system, GPS failures, and software problems.
- Windows and sunroofs: Some owners have reported that windows or the sunroof can open on their own.
- Airbags: There have been recalls for airbag issues, such as the passenger front airbag not deploying as needed.
Other issues
- Intended acceleration: Some drivers have experienced unintended acceleration.
- Wind noise: Intrusive wind noise, particularly at highway speeds, is noted by some owners of newer models.
How much does it cost to replace spark plugs in a Lexus ES 350?
The cost to replace the spark plugs in a Lexus ES 350 typically ranges from approximately $550 to over $1,000, depending on the model year, labor costs at different shops, and parts used. A newer model might cost around $550-$790, while a much older model could be closer to $1,000 or more.
This video shows the process of changing spark plugs on a Lexus ES 350: 1mWet Life SportsYouTube · May 14, 2025
Factors that influence the cost
- Labor: The 2007-2009 ES 350 models have spark plugs in the rear that are difficult to access, requiring more labor time and driving up the cost. Newer models have less labor-intensive spark plug replacement.
- Parts: The cost of the parts can vary, but expect to pay anywhere from around $100 to over $200 for a set of six plugs.
- Shop: Dealerships and independent repair shops will have different labor rates. A dealership may charge more for labor than an independent shop.
- Service: You might be able to get a discount if you combine the service with other maintenance, such as a new air filter or oil change.
Tips for saving money
- Get multiple quotes from both dealerships and independent mechanics.
- Consider an independent shop that specializes in Lexus or Toyota repairs for potentially lower labor costs.
- Ask about combining the service with other maintenance to get a bundled discount.
- If you are comfortable with DIY, you can save money by replacing the parts yourself.
Does a Lexus ES 350 have spark plugs?
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