2013 Lexus RX350 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2013 Lexus RX350 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 2013 Lexus RX350 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 2013 Lexus RX350 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.

If the drive belt idler pulley fails, there will be a very audible chirping noise from the front of the engine. This is because the idler pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to slip off. If the belt falls off, the accessory that it drives will no longer function. For instance, if the alternator belt idler pulley fails, the alternator may stop functioning. Also if the pulley begins to wobble, allowing slack in the belt, it will make an extremely loud squeaking or screeching noise, especially on cold starts. This is the belt slipping on the crankshaft pulley, and will require belt replacement once the idler pulley is replaced.

If the drive belt tensioner fails, there will be a very audible chirping, grinding, or rattling noise from the front of the engine. This is because the tensioner pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to lose tension, or break. If the belt falls off, the accessory that it drives will no longer function. Also, if the tensioner spring fails, allowing slack in the belt, it may make an extremely loud squeaking or screeching noise combined with a rattle as the tensioner bounces back and forth under load. The squealing noise is the belt slipping on the crankshaft pulley, and will require belt replacement once the belt tensioner is replaced.

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 could be causing the ticking noise in the engine of a 2013 Lexus RX350, and what diagnostic steps should be taken first?

When faced with a ticking noise in the engine of your 2013 Lexus RX350, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Start by checking the engine oil level and quality, as low or dirty oil can significantly contribute to engine noise. If the oil is insufficient or contaminated, it may need to be topped up or changed. Next, inspect the valve train components, including lifters, valves, and camshaft lobes, as wear in these areas can lead to ticking sounds. Following this, examine the timing chain or belt for any signs of looseness or wear, as these components are crucial for engine timing and can produce noise if compromised. Additionally, check for exhaust leaks, particularly around the exhaust manifold and gaskets, since these can also manifest as ticking noises. Finally, inspect the spark plugs for any signs of wear or damage, as faulty plugs can contribute to engine noise as well. By methodically addressing these areas, you can effectively diagnose and resolve the ticking noise in your Lexus RX350.

What are the common causes of a ticking noise in the engine of a 2013 Lexus RX350?

When you hear a ticking noise coming from the engine of your 2013 Lexus RX350, it’s crucial to identify the source to prevent further damage. One common culprit is low engine oil, which can lead to increased friction among engine components, resulting in that unsettling ticking sound. Additionally, worn valve lifters may also be to blame; as these components degrade over time, they can create a noticeable ticking as they operate. Another potential issue could be a faulty timing belt or chain, which, if worn or improperly tensioned, can produce a ticking noise as it interacts with the engine's gears. An exhaust leak is another possibility, as escaping gases can create a ticking sound, particularly noticeable when the engine is running. Lastly, spark knock, or pre-ignition, can lead to abnormal combustion and a ticking noise. Addressing these issues promptly is essential for maintaining the health of your engine, so if you encounter this noise, consider checking your oil levels first and then investigating the other potential causes.

How urgent is it to address the ticking noise in the engine of a 2013 Lexus RX350?

When you hear a ticking noise in the engine of your 2013 Lexus RX350, it’s crucial to act swiftly. Early detection is key, as this noise can signal underlying problems such as low oil levels, worn components, or valve train issues. Ignoring these sounds may lead to more severe engine damage, which can compromise both performance and safety. The longer you wait, the greater the risk of escalating repairs and potential breakdowns, which could leave you stranded or facing costly fixes. While a professional inspection is always recommended for a definitive diagnosis, being proactive about any unusual noises can save you time and money in the long run. Prioritizing the health of your vehicle not only enhances its longevity but also ensures your safety on the road.

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