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The Mercedes-Benz E-Class W212 E 63 AMG is an iconic high-performance luxury sedan that combines powerful engineering with refined comfort. Its hand-built V8 engine, advanced suspension system, and state-of-the-art electronics set it apart in the automotive world. However, despite its remarkable performance, the W212 E 63 AMG is not immune to common issues. Owners often face specific mechanical, electrical, and comfort-related problems, especially as the vehicle ages. This detailed article will explore these issues, their causes, and effective solutions.
Mercedes E-Class W212 E 63 AMG Engine-Related Problems
The engine is the centerpiece of the W212 E 63 AMG. Powered by the hand-assembled AMG 5.5L twin-turbo V8 engine, it delivers impressive power and torque. However, some recurring issues can compromise its performance and reliability.
The M157 engine in the W212 E 63 AMG is prone to oil leaks, particularly around the valve covers and timing chain area. Many owners report oil spots under their parked cars or notice a burning oil smell while driving. These leaks are often caused by the deterioration of gaskets and seals over time. High engine temperatures and pressure exacerbate this wear. Ignoring oil leaks can lead to low oil levels and, in severe cases, engine damage. The solution typically involves replacing the faulty gaskets or seals. To prevent leaks, regular oil changes with high-quality synthetic oil are essential, as they reduce sludge buildup and maintain proper lubrication.
Turbocharger issues are another concern for the M157 engine. Turbochargers enhance engine power but are susceptible to failure due to wear and tear, especially in high-performance applications like the E 63 AMG. Symptoms of turbocharger problems include a loss of power, excessive exhaust smoke, and unusual whining noises. The primary cause is often insufficient lubrication or oil contamination, which damages the turbo’s internal components. Addressing turbocharger failure requires either repairing or replacing the damaged unit. Ensuring regular oil changes and using the recommended grade of oil can help extend the lifespan of the turbochargers.
Another commonly reported problem is carbon buildup on the intake valves. This issue is prevalent in direct-injection engines like the M157, where fuel is injected directly into the combustion chamber, bypassing the intake valves. Over time, oil vapors and contaminants adhere to the valves, restricting airflow and reducing performance. Symptoms include rough idling, poor acceleration, and reduced fuel efficiency. The solution involves performing a walnut blasting or similar cleaning procedure to remove carbon deposits. Installing an oil catch can may help reduce future buildup.
Mercedes E-Class W212 E 63 AMG Transmission Issues
The W212 E 63 AMG is equipped with the AMG Speedshift MCT 7-speed transmission, designed for fast and precise shifts. However, transmission-related problems can arise, particularly in older models or high-mileage vehicles.
Owners often report delayed gear engagement or rough shifting. These symptoms can occur due to wear in the transmission’s clutches or solenoids. Over time, the clutches may lose their friction material, leading to slipping, while solenoids responsible for controlling gear changes can become clogged or fail. Addressing these issues may require replacing the clutches or solenoids, depending on the severity of the problem. Regular transmission fluid changes are crucial for maintaining smooth operation and preventing premature wear.
Another issue is the transmission overheating, which can trigger a warning light on the dashboard. Overheating often results from a malfunctioning transmission cooler or low fluid levels. A failing cooler may not adequately dissipate heat, leading to excessive temperatures during aggressive driving. Replacing the transmission cooler or topping off the fluid often resolves the issue. Installing an upgraded cooler can be a good option for those who frequently push their vehicles to the limit.
Mercedes E-Class W212 E 63 AMG Suspension and Steering Problems
The suspension system in the W212 E 63 AMG is engineered for high-performance handling and ride comfort. However, it is also a source of common issues that can affect the vehicle’s performance.
One significant problem is the failure of the Airmatic air suspension system, which provides adjustable ride height and damping. Over time, the air struts can develop leaks, causing the suspension to sag or the vehicle to sit unevenly. A failing air compressor may also prevent the system from maintaining proper pressure. Symptoms include a rough ride, uneven ride height, or a warning light on the dashboard. Resolving Airmatic suspension issues requires replacing the leaking air struts or the faulty compressor. While OEM parts offer the best fit and performance, aftermarket components are often more affordable and provide similar reliability. Regular inspections can catch early signs of wear, preventing more extensive damage.
Control arm bushing wear is another suspension-related problem. The bushings absorb shocks and reduce vibrations, but they can deteriorate over time, leading to clunking noises, uneven tire wear, or a loose steering feel. Replacing worn control arm bushings restores ride comfort and steering precision. High-quality aftermarket bushings made of durable materials, such as polyurethane, can provide enhanced longevity.
Mercedes E-Class W212 E 63 AMG Electrical System Issues
The advanced electrical systems in the W212 E 63 AMG enhance both performance and convenience but can become problematic as the vehicle ages.
One common electrical issue is with the Command infotainment system. Owners often report problems such as frozen screens, non-responsive controls, or Bluetooth connectivity failures. These issues can result from software glitches or hardware malfunctions within the system. Updating the software often resolves minor glitches, while hardware repairs or replacements may be necessary for persistent problems.
Another frequent problem is battery drain, which can leave the vehicle unable to start after being parked for an extended period. This issue is often caused by parasitic draws from malfunctioning electronic modules or accessories. A thorough diagnostic test can identify the source of the drain. Repairing or replacing the faulty component resolves the issue, while ensuring all lights and systems are turned off when the car is parked can help prevent future occurrences.
The electronic parking brake is another area of concern. Some owners experience malfunctions where the brake becomes stuck or fails to engage. This problem can result from a failing actuator or electrical fault in the system. Addressing the issue typically requires replacing the faulty actuator or repairing the electrical connections.
Cooling System Problems
The cooling system in the Mercedes W212 E 63 AMG is designed to manage the high heat generated by its powerful V8 engine. However, several issues can arise over time, leading to cooling inefficiencies and potential engine damage.
Radiator leaks are a common problem in the W212 E 63 AMG. The radiator is responsible for dissipating engine heat, but over time, it can develop cracks or corrosion. Symptoms include visible coolant leaks, overheating, or a low coolant warning on the dashboard. Corrosion is often caused by using low-quality or old coolant that fails to protect the system, while physical damage from debris can also lead to leaks. Fixing this issue usually requires replacing the damaged radiator. Regular coolant flushes and using high-quality, manufacturer-approved coolant can help prevent future leaks.
The thermostat and water pump are other critical components of the cooling system that can fail in the W212 E 63 AMG. A malfunctioning thermostat may become stuck open or closed, leading to improper regulation of engine temperature. Similarly, a failing water pump can prevent coolant from circulating effectively, causing the engine to overheat. Symptoms of these issues include fluctuating temperature readings, visible coolant leaks, or whining noises from the engine bay. The solution is to replace the faulty thermostat or water pump. Performing regular inspections and timely replacements of these components can help avoid catastrophic engine damage.
Mercedes E-Class W212 E 63 AMG Exhaust System Concerns
The exhaust system in the W212 E 63 AMG is designed to enhance performance while reducing emissions and noise. However, certain issues can develop, particularly in older or high-mileage vehicles.
Catalytic converter problems are a notable concern. The catalytic converter is essential for reducing harmful emissions, but it can become clogged or fail over time. A clogged converter restricts exhaust flow, leading to reduced engine performance, increased fuel consumption, and even a check engine light. The main causes are prolonged use, oil leaks contaminating the exhaust, or poor-quality fuel. Replacing the catalytic converter is often the only solution. Regular engine maintenance and using high-quality fuel can prevent premature failure.
Another common issue is exhaust system leaks. Leaks can occur due to corrosion, physical damage, or loose connections. Symptoms include a noticeable increase in engine noise, reduced fuel efficiency, or a smell of exhaust fumes in the cabin. Identifying and repairing the damaged section, whether it’s a gasket, pipe, or muffler, resolves the problem. Rust-proofing and regular inspections of the exhaust system can help prevent leaks.
Mercedes E-Class W212 E 63 AMG Interior and Comfort Issues
The W212 E 63 AMG offers a luxurious and comfortable interior, but several problems can affect its components and features as the vehicle ages.
One common complaint is premature wear of the leather upholstery and interior trim. Despite the high-quality materials used in the W212, frequent use and exposure to sunlight can lead to fading, cracking, or peeling of the leather seats and dashboard trim. Regular cleaning and conditioning with products designed for automotive leather can preserve the interior’s appearance. Using sunshades or window tinting can also reduce UV damage and prevent fading.
The Command infotainment system in the W212 is another source of frustration for many owners. Problems such as screen freezes, unresponsive controls, and connectivity issues with Bluetooth or navigation systems are frequently reported. These issues can be caused by outdated software or hardware malfunctions. Updating the system’s software often resolves minor glitches, but in some cases, hardware repairs or replacements are necessary.
Mercedes E-Class W212 E 63 AMG Drivetrain and Differential Issues
The drivetrain and differential in the W212 E 63 AMG are designed to handle the immense power generated by the vehicle’s V8 engine. However, issues can develop, especially in cars driven aggressively or with high mileage.
A common issue is differential whine, which is characterized by a high-pitched noise when accelerating or decelerating. This noise is typically caused by worn-out bearings or improper gear alignment in the differential. Over time, insufficient lubrication or prolonged use under high stress can lead to this problem. Fixing the issue usually requires rebuilding the differential and replacing worn components. Regular servicing, including checking and replacing differential fluid, can help prevent this problem.
Another concern is driveshaft vibration. Owners may notice vibrations at specific speeds or during acceleration. This issue is often caused by a worn driveshaft bearing or an imbalanced driveshaft. Replacing the damaged bearing or rebalancing the driveshaft resolves the issue. Ensuring the drivetrain components are regularly inspected and maintained is essential for long-term reliability.
Mercedes E-Class W212 E 63 AMG Sensotronic Brake Control (SBC) System Malfunctions
The Sensotronic Brake Control (SBC) system, a feature in many AMG models, is designed to enhance braking precision and responsiveness. However, it is prone to failure, particularly in vehicles with higher mileage. Symptoms of SBC failure include reduced braking performance, a warning message on the dashboard, or a complete loss of braking function in severe cases.
The main cause of SBC failure is wear on the hydraulic pump or electronic faults within the system. Mercedes has addressed this issue in some models through recalls or extended warranties, so owners should check if their vehicle is eligible for a free replacement. For cars not covered, replacing the SBC unit is necessary. Regular inspections and brake system maintenance can help prevent sudden failures and ensure safe operation.
Conclusion
The Mercedes-Benz E-Class W212 E 63 AMG is a high-performance luxury vehicle that offers an exhilarating driving experience. However, like any complex machine, it has its share of common problems that can arise over time. From engine and transmission issues to electrical, cooling, and suspension concerns, being aware of these problems and addressing them promptly can save owners significant time, money, and frustration.
To keep your W212 E 63 AMG in optimal condition, regular maintenance and timely repairs are essential. For expert service and repairs, visit European Auto Pro, 253 Goodwood Road, Kings Park, 5034 South Australia. Their experienced technicians specialize in Mercedes-Benz vehicles and are dedicated to ensuring your car delivers peak performance for years to come.