Why does the check engine light in my LS400 turn on when I start my car?

It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my Lexus LS400 making engine noise?

Unusual noises can signal a problem with your Lexus LS400 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Lexus engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Lexus LS400 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Lexus LS400 radiator?

It’s not recommended you put water in your LS400 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

What can cause a LS400 engine to suddenly stop?

Your LS400 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Lexus LS400 engines?

Your local Firestone Complete Auto Care fixes Lexus LS400 engines. Book an appointment today! We have thousands of locations across the country.

1999 Lexus LS400 Engine Repair

Learn about

1999 Lexus LS400 Trim Options

Select your Lexus LS400 trim level to learn more about Lexus-recommended engine repair. Use the following chart to find information.

V8/4.0L

1999 Lexus LS400 Repair

Stuff wears out. Even your Lexus LS400's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 1999 Lexus LS400 services.

We’re Trained to Care for Lexus LS400 Engines

The Lexus LS400 is respected for its reliability. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Things can go wrong on the road. If they do, you’ll have to find a dependable 1999 Lexus service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know Lexus LS400 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Check Engine Light on 1999 Lexus LS400

If your LS400 check engine light is on, it’s time to get it looked at. A check engine light that’s on or flashing could be a symptom of a serious problem in your fuel injection, Possible causes can include a failing oxygen sensor, bad spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your LS400 issues diagnosed and our expert techs will get the root of the problem. engine pinging noises, essential fluid leaks, or engine misfiring.

Engine Repairs for Your 1999 LS400

If your 1999 Lexus LS400 needs engine repair, our expert techs will let you know what needs to be done and why before they get started. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Lexus LS400 engine repairs and you can feel good knowing that we only use Lexus-compliant replacement parts such as the serpentine belt, engine oil seal, sensors, or a different component.

Engine Q&A 1999 Lexus LS400

Why does the check engine light in my LS400 turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my Lexus LS400 making engine noise? Unusual noises can signal a problem with your Lexus LS400 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Lexus engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Lexus LS400 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Lexus LS400 radiator? It’s not recommended you put water in your LS400 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
What can cause a LS400 engine to suddenly stop? Your LS400 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Lexus LS400 engines? Your local Firestone Complete Auto Care fixes Lexus LS400 engines. Book an appointment today! We have thousands of locations across the country.