2009 Mercedes-Benz S65 AMG
2009 Mercedes-Benz S65 AMG
Overview
The 2009 Mercedes-Benz S65 AMG, a pinnacle of luxury and performance, is equipped with a formidable twin-turbocharged V12 engine. While offering exhilarating power, its complexity and high-performance nature can lead to specific reliability concerns. Owners should be aware of potential issues related to the advanced powertrain, sophisticated suspension system, and intricate electronics. Regular and meticulous maintenance is crucial for preserving the longevity and optimal performance of this high-end luxury sedan. Despite its performance pedigree, some components may require more attention than those found in less performance-oriented vehicles.
Engine
6.0L Twin-Turbo V12 (M275)
Turbocharger Failure
- Symptoms: Loss of power, excessive smoke, whistling noises from the engine bay.
- Solution: Replacement of turbochargers.
- Cost: $3,000 - $6,000
Intercooler Leaks
- Symptoms: Reduced engine performance, overheating, coolant smell.
- Solution: Repair or replacement of intercooler hoses and components.
- Cost: $500 - $1,500
Ignition Coil Failure
- Symptoms: Misfires, rough idling, check engine light.
- Solution: Replacement of faulty ignition coils.
- Cost: $200 - $500 per coil
Oil Leaks (Valve Covers, Oil Cooler)
- Symptoms: Visible oil stains, burning oil smell, low oil level.
- Solution: Replacement of gaskets and seals.
- Cost: $400 - $1,200
Transmission
5-Speed Automatic (722.6)
Torque Converter Issues
- Symptoms: Slipping gears, shuddering during acceleration, delayed engagement.
- Solution: Rebuild or replacement of the torque converter.
- Cost: $1,500 - $3,000
Transmission Control Module (TCM) Failure
- Symptoms: Erratic shifting, transmission warning lights, inability to shift gears.
- Solution: Replacement of the TCM.
- Cost: $800 - $2,000
Suspension
Active Body Control (ABC)
Hydraulic Leaks
- Symptoms: Vehicle sagging, suspension warning lights, fluid leaks under the car.
- Solution: Repair or replacement of hydraulic lines, pumps, or struts.
- Cost: $1,000 - $4,000 per component
ABC Pump Failure
- Symptoms: Loss of hydraulic pressure, suspension dropping, loud whining noise.
- Solution: Replacement of the ABC hydraulic pump.
- Cost: $1,200 - $2,500
Electrical
Infotainment System
COMAND System Glitches
- Symptoms: Screen freezing, audio issues, navigation malfunctions.
- Solution: Software updates or replacement of the COMAND unit.
- Cost: $500 - $2,500
Sensors (Parking, Rain, etc.)
Malfunctioning Sensors
- Symptoms: False alerts, non-functional features (e.g., wipers not activating).
- Solution: Replacement of faulty sensors.
- Cost: $200 - $600 per sensor
Battery Drain
Parasitic Battery Drain
- Symptoms: Dead battery after short periods, electrical gremlins.
- Solution: Diagnosis and repair of faulty modules or circuits causing drain.
- Cost: $300 - $1,000
Exterior
Standard Chassis
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Climate Control System
HVAC Blower Motor Failure
- Symptoms: No air conditioning or heat, intermittent fan operation.
- Solution: Replacement of the blower motor.
- Cost: $300 - $700
Seat Actuators
Malfunctioning Seat Adjustments
- Symptoms: Power seats not moving, stuck in position.
- Solution: Replacement of seat motors or control modules.
- Cost: $400 - $1,000
Summary Verdict
The 2009 Mercedes-Benz S65 AMG is a high-performance luxury vehicle with a complex V12 engine and advanced systems. While it offers unparalleled driving dynamics, potential owners should anticipate higher maintenance costs and the possibility of specific component failures, particularly within the powertrain, suspension, and electrical systems. Issues like turbocharger problems, ABC suspension leaks, and electronic glitches are not uncommon. Regular, specialized maintenance is paramount to mitigate these risks and ensure the continued reliability of this exotic sedan. It is a vehicle that demands significant investment in upkeep.