The Mercedes Benz S600 from 2001 represents the pinnacle of luxury and performance of its era, boasting a powerful V12 engine. However, prospective owners and current drivers should be aware that owning this high-performance sedan comes with significant maintenance considerations, especially as these vehicles age. While offering an unparalleled driving experience, the 2001 S600, particularly models equipped with the M137 engine, can present a steep learning curve and potentially high running costs for those unprepared.
Common Issues and Maintenance Concerns for the 2001 Mercedes S600
Several key components in the 2001 Mercedes S600 are known to require attention, often around the 40,000-mile mark. Understanding these potential problem areas is crucial for budgeting and preventative maintenance.
Coil Packs and Ignition System
The ignition system, specifically the coil packs, is a known point of failure. Owners can face costs ranging from around $900 to $1200 for replacements. Coupled with this, the MAP (Manifold Absolute Pressure) sensor and ECI (Engine Control Ignition) unit can also fail, adding further expense. Replacing the MAP sensor might cost around $250 from a dealer or $150 for a Bosch replacement, while the ECI unit can set you back approximately $800.
ABC (Active Body Control) System
The sophisticated Active Body Control (ABC) system, while providing exceptional handling, is another area requiring careful monitoring. The ABC pump is prone to failure, with replacement costs ranging from $900 to $1200 for new parts, although rebuilt units can be found for around $650. Furthermore, the Pentosin fluid, essential for the ABC system’s operation, is costly, requiring approximately 10 cans at around $50 each from dealerships or $20 from auto parts stores. Don’t forget the filter, which adds another $30 to the maintenance bill.
Suspension Struts
The air suspension struts, a hallmark of the S-Class luxury ride, also have a limited lifespan. Replacement is expensive, potentially costing around $2000 per strut, and with four struts in total, this can become a significant expense.
Oil Leaks and Sensors
Oil leaks are a common concern, particularly from the oil pressure sensor. If not addressed promptly, oil can wick through the wiring harness, potentially damaging upstream oil sensors. These sensors, costing around $185 from dealers or $80 for Bosch replacements, have four units, and one is notoriously difficult to access, requiring coil pack removal and replacement of spark plug gaskets. Speaking of spark plugs, the V12 engine requires 24 spark plugs, each costing between $6 and $12.
Motor Mounts and Control Arm Bushings
Engine and drivetrain mounts are also susceptible to wear and tear. Motor mounts, costing around $100 each, require significant labor for replacement, often necessitating engine lifting and manifold/accessory component removal. Similarly, front control arm rubber bushings deteriorate over time, and neglecting their replacement can lead to more severe damage to the subframe.
The Dreaded Oil Cooler Leak
Perhaps the most labor-intensive and costly issue is an oil cooler leak. This repair can be extensive, requiring removal of the cylinder heads to access the cooler mounted underneath. This job can easily escalate to a $5000-$7000 repair at a shop if not undertaken as a DIY project.
DIY Maintenance and Ownership Advice
While the potential maintenance costs of a 2001 Mercedes Benz S600 can seem daunting, proactive maintenance and a DIY approach can significantly mitigate expenses. Investing in a good code reader is essential for diagnosing issues early. Furthermore, resources like online WIS (Workshop Information System) manuals (often available on CD or online platforms) are invaluable for DIY repairs. Keeping essential fluids like Pentosin and electrical contact cleaner on hand, along with a healthy dose of patience, is advisable.
For those mechanically inclined, tackling repairs themselves is feasible with the right information and tools. The author of the original article, a seasoned mechanic with experience in classic cars, is even planning a DIY repair manual specifically for the M137 engine, which could be a vital resource for owners looking to keep their 2001 S600 running smoothly without breaking the bank.
Conclusion: Luxury and Responsibility
Owning a 2001 Mercedes Benz S600 is an experience in automotive luxury and power. However, it is crucial to enter ownership with open eyes regarding potential maintenance demands. Being informed about common issues, embracing preventative maintenance, and potentially undertaking DIY repairs can make the ownership experience more sustainable and enjoyable. Keep an eye out for specialized resources and communities dedicated to the M137 engine and the 2001 S600 to navigate the challenges and rewards of owning this remarkable machine.
