What happens if my Lexus LS400 spark plugs fail?

When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.

What do I do if I see a pool of liquid under my Lexus LS400?

Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.

Are hard starts and stops bad for my Lexus LS400 engine?

You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

Where can I get a Lexus LS400 tune-up?

At your closest Firestone Complete Auto Care! Our experienced technicians offer Lexus LS400 service, maintenance, and repairs.

How frequently do the fuel injectors in my Lexus LS400 need to be cleaned?

There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.

Who can I go to for Lexus LS400 tune-ups?

Your local Firestone Complete Auto Care is happy to help with your Lexus LS400 tune-up. Visit us online to see our latest offers and book an appointment.

1999 Lexus LS400 Engine Tune-Ups & Maintenance

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Schedule Your Lexus LS400 Tune-Up Service Appointment

Keep your LS400 running newer, longer. Schedule an engine tune-up as soon as you notice your engine running differently. Make your appointment today.

Schedule an Appointment

Enhance Lexus LS400 Performance with a Tune-Up

Is it time for an engine tune-up? If you tend to ignore your car until something goes wrong, now is the time to work on that habit, especially if you want your 1999 Lexus LS400’s engine to last for a long time. Regular engine tune-ups can optimize your LS400’s power on the road. They're designed to help your engine start easier and run more efficiently, which can mean better fuel economy (a win for you) and lower emissions (a win for the environment). When you get routine engine tune-ups based on Lexus's recommendations, you invest in your LS400's long-term health and engine performance.

Lexus LS400 Engine Tune-Up Services

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1999 Lexus LS400. The standard Firestone Tune-Up is one service option. The standard Firestone Tune-Up includes new spark plugs (and installation!), a thorough inspection of engine components, and a lifetime parts warranty*. A second service option replaces the air and fuel filter in your LS400. Our third service is a thorough cleaning of the fuel system. During this type of tune-up, we use a three-step process to get rid of harmful varnish, dirt, and carbon deposit buildup in your LS400’s fuel injectors, throttle body, and throttle plate. This goes a long way in boosting your fuel system’s overall performance. Here’s something to remember when choosing services: the mileage and service history of your LS400 can determine what kind of service it needs. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where to Get a Tune-Up for Your Lexus LS400

Come to Firestone Complete Auto Care for your next 1999 LS400 engine tune-up. Not sure when you’re due for a tune-up? Use Lexus’s recommended maintenance schedule as a reference point, or schedule an appointment ASAP if you notice any of these signs: shaking while the engine is idling, poor fuel economy, engine knocking, or an illuminated check engine light.

*Talk to a Firestone Complete Auto Care teammate for full terms and conditions on warranties.

1999 Lexus LS400 Engine Tune-Up Q&A

What happens if my Lexus LS400 spark plugs fail? When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.
What do I do if I see a pool of liquid under my Lexus LS400? Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.
Are hard starts and stops bad for my Lexus LS400 engine? You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.
Where can I get a Lexus LS400 tune-up? At your closest Firestone Complete Auto Care! Our experienced technicians offer Lexus LS400 service, maintenance, and repairs.
How frequently do the fuel injectors in my Lexus LS400 need to be cleaned? There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.
Who can I go to for Lexus LS400 tune-ups? Your local Firestone Complete Auto Care is happy to help with your Lexus LS400 tune-up. Visit us online to see our latest offers and book an appointment.

1999 Lexus LS400 Maintenance

We know it’s not just a car, it’s your car. We’ll help you properly maintain your Lexus LS400 to keep it on the road and running smoothly. Learn more about maintenance below.

1999 Lexus LS400 Repair

Your Lexus LS400 runs best when it’s well cared for. Make sure it’s always in tip-top shape with repairs from Firestone Complete Auto Care. Learn more about 1999 Lexus LS400 repairs below.