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The Mercedes-Benz E-Class W213 E 350 d is a premium luxury sedan that combines cutting-edge technology, comfort, and performance. However, no vehicle is entirely immune to problems, and the W213 E 350 d has its own set of commonly reported issues. Understanding these problems can help owners maintain their vehicles effectively and avoid costly repairs. This article provides an in-depth look at the most frequent issues encountered by owners of the W213 E 350 d, along with their causes and solutions.
Mercedes E-Class W213 E 350 d Engine Performance Issues
The W213 E 350 d is powered by a robust 3.0-liter inline-six turbocharged diesel engine that offers exceptional power and efficiency. Despite its engineering excellence, this engine is not without its challenges. Some of the most commonly reported engine problems include turbocharger failures, diesel particulate filter (DPF) clogging, and oil leaks.
Turbocharger failure is a serious concern for the W213 E 350 d. The turbocharger enhances engine performance by forcing more air into the combustion chamber, but it operates under extreme heat and pressure, which makes it prone to wear. Symptoms of a failing turbocharger include loss of power, excessive smoke from the exhaust, and a whining noise during acceleration. The most common causes of turbocharger failure are oil contamination, insufficient lubrication, and debris damage. Resolving this issue often involves replacing the turbocharger. To prevent future failures, ensure the engine oil is clean and of high quality, and replace the oil and air filters regularly.
Another frequent problem in diesel engines is clogging of the diesel particulate filter (DPF). The DPF is designed to reduce emissions by trapping soot particles, but over time, it can become clogged, especially if the vehicle is used primarily for short trips. Symptoms include reduced engine performance, warning lights on the dashboard, and increased fuel consumption. Causes of DPF clogging include infrequent long drives at highway speeds, which are necessary to burn off accumulated soot. Solutions involve either cleaning the DPF using professional services or replacing it entirely. Regular highway driving can help prevent this issue by allowing the DPF to regenerate naturally.
Oil leaks are another common issue in the W213 E 350 d. These leaks often originate from the valve cover gasket or the oil pan gasket. Over time, the gaskets can degrade due to heat and pressure, leading to visible oil puddles under the car or a burning oil smell. Fixing oil leaks involves replacing the worn gaskets. Regular oil changes with high-quality oil can help prevent gasket degradation and minimize the risk of leaks.
Mercedes E-Class W213 E 350 d Transmission Problems
The W213 E 350 d is equipped with the 9G-Tronic automatic transmission, which is known for its smooth and efficient shifting. However, some owners report transmission-related issues, such as hard shifts, hesitation, or gear slipping.
Hard shifting is a commonly reported problem. Drivers may experience jolts or vibrations when the transmission changes gears. This issue is often caused by software glitches in the transmission control unit (TCU) or worn-out transmission fluid. Reprogramming the TCU or performing a transmission fluid and filter change can usually resolve this issue. Regular transmission maintenance is essential to ensure smooth operation.
Another issue is hesitation or delayed response when accelerating. This can occur due to a malfunctioning torque converter, low transmission fluid levels, or issues with the TCU. Replacing the torque converter or updating the transmission software may be necessary to address this problem. Ensuring the transmission fluid is clean and topped up can prevent many transmission-related concerns.
Gear slipping is less common but can still occur, especially in high-mileage vehicles. This issue is often caused by worn internal components, such as clutches or bands. A transmission rebuild or replacement may be required to fix this problem. To prolong the life of the transmission, regular fluid changes and avoiding aggressive driving are recommended.
Mercedes E-Class W213 E 350 d Suspension and Steering Issues
The W213 E 350 d offers a refined ride and precise handling, thanks to its advanced suspension and steering systems. However, as with any complex system, problems can arise over time.
A common issue reported by owners is premature wear of suspension components, particularly the air suspension system. The Airmatic suspension system provides adjustable ride height and damping, but it is prone to air strut leaks and compressor failures. Symptoms include a sagging suspension, uneven ride height, or a warning light on the dashboard. These problems are usually caused by age-related wear or damage to the air struts and compressor. Replacing the faulty components is the most effective solution. Regular inspections and early detection of leaks can prevent further damage and reduce repair costs.
Steering problems are also occasionally reported. Some drivers experience a loose or unresponsive steering feel, often caused by worn tie rods or steering rack components. Unusual noises, such as clunking or squeaking, may also indicate steering issues. Replacing the worn components is necessary to restore precise handling. Regularly inspecting the steering system and addressing minor issues promptly can prevent major repairs.
Mercedes E-Class W213 E 350 d Electrical System Issues
The W213 E 350 d is equipped with state-of-the-art electrical and electronic systems, including advanced driver-assistance features, infotainment systems, and lighting. While these systems enhance the driving experience, they are also sources of potential problems. Two of the most frequently reported electrical issues are battery drain and malfunctioning sensors.
Battery drain is a common problem in vehicles with extensive electrical features like the W213. Many owners report unexplained battery discharge, leaving them stranded with a vehicle that won’t start. This issue is often caused by parasitic draws from malfunctioning components, such as control modules, infotainment systems, or sensors that fail to power down properly when the car is off. In some cases, updates to the software managing these systems can resolve the problem. Diagnosing battery drain requires identifying the specific component responsible for the excessive power draw. Replacing the faulty part usually resolves the issue. To prevent this, ensure all electrical systems are properly shut down before leaving the car, and consider using a trickle charger if the vehicle will be parked for extended periods.
Another common electrical issue involves malfunctioning sensors. The W213 E 350 d relies on a network of sensors for various systems, including adaptive cruise control, lane-keeping assist, and parking sensors. Faulty sensors can lead to errors or warnings on the dashboard, such as incorrect distance readings or failure of assistance systems. Sensor problems often arise from wiring issues, dirt or debris obstructing the sensors, or software glitches. Cleaning the affected sensor and ensuring proper connections can resolve minor issues. However, if the sensor is damaged, replacement is necessary. Regular cleaning and maintenance of sensors, especially after driving in adverse weather conditions, can help maintain their functionality.
Mercedes E-Class W213 E 350 d Interior and Comfort Issues
The interior of the W213 E 350 d is a hallmark of luxury and sophistication, featuring premium materials and cutting-edge technology. However, even these high-end features can encounter problems over time. Two of the most reported issues include problems with the infotainment system and seat adjuster malfunctions.
The infotainment system in the W213, known as the COMAND system, is a centerpiece of the car’s interior. While it offers numerous features, including navigation, media control, and smartphone integration, it is not immune to glitches. Some owners report freezing screens, unresponsive controls, or issues with Bluetooth connectivity. These problems are often caused by outdated software or hardware malfunctions. Updating the system’s software usually resolves many glitches, but in cases of hardware failure, components like the display screen or control module may need to be replaced. Ensuring the system is updated regularly and avoiding overloading it with multiple active features simultaneously can help reduce the likelihood of these issues.
Power seat adjuster malfunctions are another commonly reported problem. Drivers and passengers may find that the seats fail to adjust or get stuck in one position. This issue is typically caused by worn-out motors, switches, or wiring faults. Moisture or dirt ingress can also damage the electrical components of the seat adjuster. Diagnosing the issue involves inspecting the seat motors and switches and replacing any faulty parts. Keeping the interior clean and dry can help prolong the life of these components.
Mercedes E-Class W213 E 350 d Cooling System Problems
The cooling system in the W213 E 350 d plays a vital role in regulating engine temperature, especially for a turbocharged diesel engine that generates significant heat. However, cooling system issues, such as radiator leaks and water pump failures, are not uncommon.
Radiator leaks are frequently reported by W213 owners. The radiator is responsible for dissipating engine heat, but over time, it can develop leaks due to corrosion or physical damage. Symptoms of a leaking radiator include coolant puddles under the car, overheating, or low coolant levels. Corrosion is often caused by using low-quality coolant or failing to replace coolant at recommended intervals. Physical damage can result from road debris or accidents. Fixing a radiator leak typically involves replacing the radiator if the damage is extensive. Regular coolant flushes and the use of manufacturer-approved coolant can help prevent corrosion and extend the radiator’s lifespan.
Water pump failure is another concern for the W213 E 350 d. The water pump circulates coolant throughout the engine to maintain an optimal temperature. A failing water pump can result in overheating, coolant leaks, or a whining noise from the engine bay. This issue is often caused by wear and tear on the pump’s impeller or bearings. Replacing the water pump is necessary to restore proper cooling system function. Regular inspections and replacing worn belts associated with the water pump can help prevent premature failure.
Mercedes E-Class W213 E 350 d Suspension and Noise-Related Problems
The W213 E 350 d is engineered for a quiet and smooth ride, but certain suspension and noise-related issues can detract from the driving experience. One commonly reported problem is excessive noise or vibrations from the suspension system. This issue often stems from worn suspension bushings or shock absorbers. Over time, these components can degrade due to regular use and exposure to rough road conditions. Replacing worn bushings or shock absorbers resolves these issues. Ensuring the suspension is inspected during regular maintenance can help catch early signs of wear.
Wind noise is another issue that some owners encounter, particularly at highway speeds. Poorly sealed windows or doors are the usual culprits. Adjusting or replacing weather stripping around the affected areas can resolve this problem. Regular inspections of seals and ensuring they are clean and free of damage can help maintain a quiet cabin.
Mercedes E-Class W213 E 350 d Additional Common Problems
Premature rusting has been reported in some W213 models, particularly in regions with harsh climates or frequent road salt usage. Rust typically appears around wheel arches, undercarriages, and door edges. This issue is primarily caused by insufficient rust protection during manufacturing or poor drainage design, allowing moisture to accumulate. Preventing rust involves regular washing, especially in winter, and applying underbody rust-proofing treatments. Addressing rust early by sanding and repainting affected areas can prevent further damage.
Faulty electronic parking brakes are another issue. Some owners report that the parking brake fails to engage or disengage properly, often due to electrical or actuator problems. Resetting the system or replacing the faulty actuator usually resolves this issue. Regular checks during maintenance can ensure the parking brake remains functional.
Conclusion
The Mercedes-Benz E-Class W213 E 350 d is a luxury sedan that offers a refined driving experience, but like any vehicle, it comes with its share of common problems. From engine and transmission issues to electrical and interior concerns, understanding these problems can help owners take proactive steps to maintain their vehicles and avoid costly repairs.
For professional diagnostics and repairs of your Mercedes E-Class W213 E 350 d, visit European Auto Pro, 253 Goodwood Road, Kings Park, 5034 South Australia. Their experienced technicians specialize in Mercedes-Benz vehicles and are committed to ensuring your car remains in excellent condition for years to come.