2016 Lexus ES300h Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2016 Lexus ES300h Engine and How to Address Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
12% chance it's the
Exhaust Leak
0%
88% chance it's
Something else
The most common reasons a 2016 Lexus ES300h engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
  • Exhaust Leak: A damaged exhaust manifold or a loose connection in the exhaust system can cause an exhaust leak, resulting in increased noise and potential loss of engine power.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2016 Lexus ES300h engine makes a ticking noise?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

An engine leaking oil does not always make a puddle on the ground. A burning smell may be noticed from the front of the vehicle after driving. This is because engine oil leaks may fall onto hot engine components, especially the exhaust manifold, and burn off before making it to the ground. This poses a risk to the engine because the leak going unnoticed may deplete the engine oil reserve, and lead to an oil starvation issue. Some engine oil leaks only occur while the engine is running, so the leak may be larger than the small spot on the ground makes it seem.

Noises can be accompanied by many annoying or worrisome sensations. Consider the noise of grinding brakes, the noise sounds much like the brake pedal and steering wheel feel. This is important, as random noises can be difficult to replicate without knowing when the sound occurs, what must be done to make the sound, and what sound it is. Any professional technician can replicate and diagnose most noises, but to ensure the vehicle is more quickly diagnosed, make sure you tell your technician these three pieces of information.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the potential causes of a ticking noise in the engine of a 2016 Lexus ES300h, and how should I diagnose them?

When diagnosing a ticking noise in the engine of a 2016 Lexus ES300h, it's crucial to follow a methodical diagnostic approach that begins with the simplest checks. Start by verifying the engine oil level, as insufficient oil can lead to poor lubrication of engine components, resulting in ticking sounds. If the oil level is adequate, proceed to inspect the valve train for any wear, particularly on lifters and valves, which are often responsible for such noises. Next, examine the timing belt or chain for signs of wear or looseness, as these components can also contribute to ticking. Additionally, check for any exhaust leaks near the engine, as these can mimic ticking sounds. It's also important to assess the condition of the spark plugs; worn or faulty plugs can generate engine noise. Lastly, inspect the heat shields around the exhaust system to ensure they are secure, as loose or damaged shields can create rattling or ticking noises. By systematically addressing these potential issues, you can effectively pinpoint and resolve the source of the ticking noise in your Lexus ES300h.

What could be causing the ticking noise in the engine of a 2016 Lexus ES300h?

When diagnosing a ticking noise in the engine of a 2016 Lexus ES300h, it's essential to consider several common problems that could be at play. One of the first things to check is the engine oil level and quality, as low oil can lead to insufficient lubrication, resulting in ticking sounds. If the oil appears dirty or is below the recommended level, topping it off or changing it may resolve the issue. Next, inspect the valve train components, including lifters and valves, as wear and tear can lead to ticking noises. A thorough examination of these parts can help identify any necessary repairs. Additionally, the condition of the timing belt or chain should be assessed; if it's loose or worn, it can create unwanted sounds as it interacts with other engine components. An exhaust leak is another potential culprit, so examining the exhaust system for any signs of damage or leaks is crucial. Lastly, don’t overlook the heat shields, as loose or damaged shields can also produce ticking or rattling noises. By systematically checking these areas, DIYers can effectively narrow down the source of the ticking noise and take appropriate action.

How urgent is it to address the ticking noise in the engine of a 2016 Lexus ES300h?

Addressing a ticking noise in the engine of a 2016 Lexus ES300h is a matter that should not be taken lightly. The urgency of this issue stems from the potential consequences of neglecting it, which can range from minor inconveniences to significant safety hazards. Early detection is crucial; by identifying the source of the noise promptly, you can prevent further damage to engine components that could lead to costly repairs. Additionally, unusual engine noises can indicate underlying problems that, if left unchecked, may compromise the vehicle's performance and safety. For DIY enthusiasts, while it may be tempting to ignore these symptoms, taking action can not only save money in the long run but also ensure the vehicle operates smoothly. It is advisable to conduct a thorough inspection or consult a qualified mechanic to accurately diagnose the issue and recommend appropriate repairs. By prioritizing this matter, you can maintain the integrity of your vehicle and enjoy a safer driving experience.

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