2002 Mercedes-Benz E500

2002 Mercedes-Benz E500

Overview

The 2002 Mercedes-Benz E500, part of the W211 generation, is a luxury sedan known for its potent V8 engine and refined driving experience. While generally well-regarded for its performance and comfort, like any vehicle of this age, it has specific areas that have shown a propensity for issues. Owners often report a strong appreciation for its build quality and driving dynamics, but maintenance and repair costs can be significant, especially for components unique to its higher-trim status. This analysis focuses on common reported technical issues beyond routine maintenance, providing insights into potential reliability concerns for prospective buyers or current owners.

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Engine

5.0L V8 (M113)

Ignition Coil Failure

• Symptoms: Misfires, rough idling, check engine light, reduced power.
• Solution: Replacement of faulty ignition coil(s).
• Cost: $150 - $300 per coil

Oil Cooler Seals Leak

• Symptoms: Oil leaks around the engine block, potential coolant contamination.
• Solution: Replacement of oil cooler seals.
• Cost: $400 - $700

Mass Air Flow (MAF) Sensor Issues

• Symptoms: Hesitation, poor acceleration, stalling, check engine light.
• Solution: Cleaning or replacement of the MAF sensor.
• Cost: $200 - $400

Transmission

5-Speed Automatic (722.6)

Conductor Plate Failure

• Symptoms: Erratic shifting, transmission slipping, ‘limp mode’, P0705, P0715, P0720 codes.
• Solution: Replacement of the conductor plate and transmission fluid service.
• Cost: $800 - $1500

Transmission Control Module (TCM) Issues

• Symptoms: Similar to conductor plate issues, harsh shifting, failure to engage gears.
• Solution: Repair or replacement of the TCM.
• Cost: $600 - $1200

Suspension

Standard Chassis

Air Suspension (ABC) Leaks/Failure

• Symptoms: Vehicle sagging, ‘ABC System Malfunction’ warning, bouncy ride, fluid leaks.
• Solution: Repair or replacement of leaking struts, pumps, or lines. Fluid flush.
• Cost: $1000 - $3000+ per component

Control Arm Bushings Wear

• Symptoms: Clunking noises over bumps, vague steering, uneven tire wear.
• Solution: Replacement of worn control arm bushings or entire control arms.
• Cost: $300 - $600 per axle

Electrical

General Electrical System

SAM (Signal Acquisition Module) Corrosion

• Symptoms: Intermittent electrical failures (lights, wipers, windows), CAN bus errors.
• Solution: Cleaning corrosion from SAM module connectors, replacement if severely damaged.
• Cost: $500 - $1500

Window Regulator Failure

• Symptoms: Power windows not operating, slow operation, grinding noises.
• Solution: Replacement of the window regulator mechanism.
• Cost: $200 - $400 per window

Instrument Cluster Pixelation

• Symptoms: Faded or missing segments on the LCD display of the instrument cluster.
• Solution: Repair or replacement of the instrument cluster.
• Cost: $400 - $800

Exterior

Body and Trim

Headlight Lens Hazing/Condensation

• Symptoms: Cloudy headlights, reduced light output, moisture inside lenses.
• Solution: Restoration of lenses or replacement of headlight assemblies.
• Cost: $100 - $300 for restoration, $400 - $800 for replacement

Sunroof Drain Clogs

• Symptoms: Water leaks into the cabin, especially during rain or washing.
• Solution: Clearing of sunroof drain tubes.
• Cost: $100 - $250

Interior

Cabin Systems

HVAC Blower Motor Resistor Failure

• Symptoms: Fan only works on highest setting, or not at all.
• Solution: Replacement of the blower motor resistor.
• Cost: $100 - $250

Seat Heater Malfunction

• Symptoms: One or both seat heaters not working.
• Solution: Replacement of heating elements or wiring.
• Cost: $300 - $600

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Summary Verdict

The 2002 Mercedes-Benz E500 offers a compelling blend of performance and luxury, but potential owners should be aware of its specific reliability quirks. The V8 engine is robust, but ignition coils and oil cooler seals are common points of attention. The 722.6 transmission, while generally durable, can suffer from conductor plate issues. The Active Body Control (ABC) suspension, a hallmark of its premium feel, is a significant potential expense if it requires repair. Electrical gremlins, particularly related to the SAM module and window regulators, are not uncommon. While the exterior and interior are generally well-built, minor issues like headlight hazing and HVAC component failures can arise. Regular, diligent maintenance by a qualified technician is crucial for mitigating these potential issues and ensuring the longevity of this sophisticated vehicle.