2013 Mercedes-Benz GL350 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2013 Mercedes-Benz GL350 Engine and How to Address Them

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Reviewed by
Bo Fader
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 Mercedes-Benz GL350 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 Mercedes-Benz GL350 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 are the potential causes of a ticking noise in the engine of a 2013 Mercedes-Benz GL350, and how should I diagnose them?

When diagnosing a ticking noise in the engine of a 2013 Mercedes-Benz GL350, it's essential to adopt a systematic approach that prioritizes simpler issues before delving into more complex problems. Start by checking the engine oil level, as low oil can lead to inadequate lubrication and result in ticking sounds. If the oil level is sufficient, inspect the valve lifters for wear, as these components can deteriorate over time and may need replacement. Next, examine the fuel injectors for any signs of malfunction, as faulty injectors can also contribute to engine noise. If these components are functioning correctly, turn your attention to the timing chain, ensuring it is neither loose nor worn, as issues here can produce similar ticking sounds. Additionally, inspect the exhaust system for leaks, which can create noise near the engine. Finally, don't overlook the spark plugs; worn or faulty plugs can also lead to engine ticking. By following this diagnostic approach, you can effectively identify the source of the noise and determine the necessary repairs, ensuring your vehicle runs smoothly.

What are the common causes of a ticking noise in the engine of a 2013 Mercedes-Benz GL350?

When dealing with a ticking noise in the engine of a 2013 Mercedes-Benz GL350, it's crucial to understand the common problems that could be at play. One of the primary culprits is valve train issues, which may arise from worn lifters or camshaft lobes, leading to irregular engine sounds. Additionally, low engine oil levels can significantly impact engine performance; insufficient lubrication can cause components to rub against each other, resulting in a ticking noise. Another potential source of the sound is an exhaust manifold leak, where escaping hot gases create a distinct ticking as they exit through cracks. Furthermore, a faulty timing chain tensioner can lead to improper tension on the timing chain, producing similar noises. Lastly, malfunctioning fuel injectors may also contribute to the ticking sound as they operate. Addressing these issues promptly is essential to prevent further damage, and regular maintenance can help ensure your GL350 runs smoothly.

How urgent is it to address the ticking noise in the engine of a 2013 Mercedes-Benz GL350?

Addressing a ticking noise in the engine of a 2013 Mercedes-Benz GL350 is a matter that should not be taken lightly. The urgency of this issue stems from the potential consequences of neglecting such symptoms, which can lead to significant engine damage and costly repairs. Early detection is key; by identifying the source of the noise promptly, you can prevent further deterioration of engine components, ensuring that your vehicle remains in optimal condition. Moreover, ignoring the ticking sound may compromise the performance and efficiency of your vehicle, ultimately affecting your driving experience. Safety is another critical factor; engine noises can indicate underlying problems that may pose risks to both the driver and passengers. For those considering a DIY approach, it is essential to recognize when professional inspection is warranted, as a qualified mechanic can accurately diagnose the issue and recommend the necessary repairs. In summary, addressing a ticking noise in your GL350 should be a priority to maintain the vehicle's health and safety, making it imperative to act swiftly.

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