What causes a breakdown on a Lexus IS250?

This is caused by a problem with the VVti system. Some owners report having a top-end rebuild to fix it (with varying success), some report just needing to top-up/change the oil to make it go away, some report just ignoring it without issue. I’ve not been able to find any mention of a breakdown resulting from this issue.

Are there any common problems with the IS250?

Not really a ‘common’ fault, but the exhaust on any car has a limited life and replacing the one on a IS250 can be very expensive. Lot’s of info in this thread: Not a fault as such, but the service schedule states that these need to be changes at the 60,000 mile service.

What should I do if my Lexus IS knocking?

It’s recommended to take the vehicle in to the shop if the knocking is a recurring issue even when the oil is good. However, if going to the mechanic is not possible, there is a work around. Try to park your IS facing downhill so gravity pulls the oil towards the gears when starting the car.

What should I use to clean my Lexus IS 250?

This issue is a build-up of carbon deposits in the engine. I know that ‘Seafoam’ is a really popular cleaner in the US that a lot of people use on many different cars that suffer this issue, but Seafoam is very difficult (and expensive) to get hold of in the UK. Details of an alternative in this thread:

Why does my Lexus IS 350 make a knocking noise?

Check your oil level and oil quality to be sure it’s in good condition. The Lexus IS 350 has another, more serious issue with similar symptoms. There was as issue with oil getting to the cam gears in the Lexus IS 350. This is more of a rattle noise than a complete knock.

Why is the oil in my Lexus IS 350 so low?

If the oil gets too low or too old, it won’t get those pieces lubricated adequately or quickly enough. Check your oil level and oil quality to be sure it’s in good condition. The Lexus IS 350 has another, more serious issue with similar symptoms. There was as issue with oil getting to the cam gears in the Lexus IS 350.

Can a water pump in a Lexus overheat?

The water pump in a Lexus IS—or in any vehicle for that matter—is a vital component. If the water pump seizes, the engine is going to overheat and quickly die permanently. The water pump is covered under the power train warranty, so if you are still within your warranty period, take it in sooner rather than later.

What does it mean when your Lexus wont start?

The symptom of this condition is “No noise or sound at all” when ignition key is turned. If this is faulty, the symptom will be the complete ignition kill. Therefore, you will not heard and clicking sound or engine turning at all.

What do I need to know about my Lexus starter?

If you hear a click sound right at the starter relay (Green Color Square Type Relay). If it clicks when your friend try to start the car, then the relay is good.

Why does the Lexus IS250 have carbon build up?

Here is what to do and why you should not worry. The Lexus IS250 and GS300 sedans use small V6 engines with very high compression. Due to the nature of their design they are subject to a build-up of carbon inside the parts of the engine surrounding the combustion area.

Can a Lexus IS250 GS300 run at idle?

Valves and other components can become coated with this carbon and then the engine will run roughly at idle, or possibly even stall. If you have an IS250 or GS300 and these issues have come up you should take action, but hold off any panic. Lexus is trying hard to take care of customers with this problem.

When to take a Lexus IS250 to the dealer?

If your IS250 or GS300 is getting close to 9-years old, it might be wise to take it to a Lexus dealer for them to inspect the car for the issue. Even if you are charged, which is unlikely, you will either receive needed repairs, or you create a paper trail for future help if needed.

Are there any recalls on the Lexus IS250?

Lexus is trying hard to take care of customers with this problem. The first thing to know is that Lexus issued a letter to all 2006-2010 IS250 and GS300 owners explaining the issue. The letter also offers help. Although not a recall, Lexus is offering to correct the problem and has added a 9-year, unlimited mileage warranty on affected cars.

What’s the most common problem with a Lexus?

This seems to be the best known and most common problem. Lexus America did a recall for it (not sure if Lexus UK did the same). This thread has good info: http://www.lexusownersclub.co.uk/forum/topic/75714-slide-pin-in-the-rear-brake-calipers-seized-check-yours/ Very common on British roads by the sound of things.

Are there any issues with the Lexus IS 250?

This article applies to the Lexus IS 250 (2006-2010). Design issues with the IS 250/250C 2.5L 4GR-FSE engine prompted Lexus to issue a Customer Service Program (CSP) in the U.S. in 2012 to correct problems with carbon buildup in the cylinder head and combustion chambers.

What to do about carbon build up in Lexus IS 250?

The simplest way to prevent carbon buildup in the IS 250 is to regularly drive the engine hard. The heat and force of high rpm driving will knock off whatever carbon that has accumulated on the valves and pistons. This is a common solution to this issue for direct injected engines regardless of manufacturer.

What should I do if my Lexus engine is leaking?

If it meets the criteria, the service department contacts Lexus for authorization to make the repairs. The dealer will take the engine apart and clean the pistons and cylinder bores. Pistons, piston rings, and related parts may be replaced if they’re worn beyond tolerance.

What does the Check Engine light on a Lexus mean?

The Check Engine Light (CEL) or the CHECK VSC-CHECK ENGINE-TRAC lights are a prompt for service technicians to plug in a code reader. Codes will be “thrown,” stating what items mechanics should look into.

Why is my Lexus IS 350 not working?

The IS 350 uses both port and direct injection, so it doesn’t suffer from carbon buildup as much. A rough idle may indicate a carbon buildup problem. To test this, you’ll need a bit of space to get up to speed: Drive the car up to at least 3rd gear. Without slamming on the brakes, depress the pedal hard enough to come to a quick stop.

Why is the intake valve on my Lexus not working?

Misfires on the Lexus are most commonly caused by carbon build up on the intake valves that has flaked off and becomes stuck between the valve and the seat, causing a loss of compression.

Why does my Lexus engine keep misfiring?

There are certain self-diagnostic tests that you can perform to help determine if you need an engine rebuild or, for example, just need some new spark plugs. Misfires on the Lexus are most commonly caused by carbon build up on the intake valves that has flaked off and becomes stuck between the valve and the seat, causing a loss of compression.

Why does my Lexus have a rough idle?

A rough idle may indicate a carbon buildup problem. To test this, you’ll need a bit of space to get up to speed: Drive the car up to at least 3rd gear. Without slamming on the brakes, depress the pedal hard enough to come to a quick stop. Determine if the car is shaking abnormally and feels like it is about to stall.

Can you replace the mirror on an IS250?

Only solution is to replace mirror. There is a copy of TSB further down this thread: Not really a ‘common’ fault, but the exhaust on any car has a limited life and replacing the one on a IS250 can be very expensive. Lot’s of info in this thread:

Are there any problems with the Lexus IS250?

Most Common Lexus IS250 Problems. Lexus IS250 vehicles have 7 reported problems.The most commonly reported Lexus IS250 problem is: The Inside Rear View Mirror May Become Discolored. The Inside Rear View Mirror May Become Discolored.

Do you have to replace Ignition coils on Lexus IS?

Now, most have individual ignition coils at each spark plug for improved power and cleaner emissions, which can be easily replaced. This article applies to the Lexus IS 250, IS 350, IS-F (2004-2013). While reliable, the coil packs on your Lexus IS don’t last forever due to time, heat, and corrosion.

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