Addressing concerns about your 2004 Sl500 Mercedes power steering and Active Body Control (ABC) system is crucial for maintaining its performance and longevity. It’s important to understand that in your SL500, the power steering and ABC system utilize a tandem pump. This means they are integrated into a single unit, sharing a common shaft but operating as two distinct pumps.
The presence of metal shavings in the hydraulic fluid is a serious warning sign. This usually indicates internal wear and potential damage within the pump itself. A key question to consider is whether the pump has ever run low on fluid. Fluid starvation can lead to increased friction and accelerated wear, producing metal debris.
When seeking professional help, ensure you consult with a mechanic who has specific experience with Mercedes-Benz ABC systems. Ideally, this would be either a Mercedes-Benz dealer or a reputable independent mechanic specializing in Mercedes vehicles. Inquire about the possibility of a thorough fluid flush to remove the metal shavings. While the system does have a filter on the return side intended to catch debris, metal particles circulating within the system can still cause damage, especially in areas with limited fluid circulation like accumulators and valve blocks.
Regarding repair costs, while a 7-hour labor estimate for a pump replacement and system flush might seem high, it’s essential to get a second opinion. Labor rates can vary, and obtaining quotes from multiple experienced mechanics is advisable.
Considering a remanufactured pump as a cost-saving measure is understandable. However, when paying for professional labor, the potential risks associated with a less reliable remanufactured or no-name pump need careful consideration. If a cheaper pump fails prematurely, the labor costs for a repeat replacement can quickly negate any initial savings. In this situation, opting for a genuine or high-quality OEM pump might be a more prudent long-term investment.
Before investing in a new pump, prioritize a comprehensive system flush. This should involve more than just draining and refilling the reservoir. A thorough flush would ideally include disconnecting lines to expel as much contaminated fluid and metal shavings as possible. While this will add to the labor cost, it’s a worthwhile measure to protect the new pump and other components from residual contamination.
Finally, while addressing the pump and fluid, it’s also wise to inspect the system accumulators. These components are integral to the ABC system’s function and can degrade over time, potentially contributing to system issues.
