2004 Mercedes-Benz SLK32 AMG

The 2004 Mercedes-Benz SLK32 AMG is a high-performance roadster featuring a supercharged 3.2-liter V6 engine producing 349 horsepower and 332 lb-ft of torque. This was the only engine option available for the SLK32 AMG. It was paired exclusively with a five-speed automatic transmission. Owners often praise the SLK32 AMG for its impressive power, nimble handling, and unique retractable hardtop. Common dislikes include the dated interior, occasional reliability issues, and relatively firm ride.

Engine

3.2L Supercharged V6 (M112)

• Crankshaft Position Sensor Failure
  • Description/Symptoms: Engine stalling, rough running, or failure to start. Diagnostic Trouble Codes (DTCs) related to crankshaft position sensor signal.
  • Solution: Replacement of the crankshaft position sensor.
  • Estimated Cost to Fix: $150 - $300+
  • Recalls: None Found
• Supercharger Clutch Failure
  • Description/Symptoms: Loss of power, whining noise from the supercharger area, Diagnostic Trouble Codes (DTCs) related to the supercharger.
  • Solution: Replacement of the supercharger clutch or the entire supercharger assembly.
  • Estimated Cost to Fix: $500 - $2500+
  • Recalls: None Found
• Idler Pulley Failure
  • Description/Symptoms: Squealing or grinding noises from the engine bay, belt slippage, potential for belt damage.
  • Solution: Replacement of the idler pulley.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found

Transmission

5-Speed Automatic (722.6)

• Conductor Plate Failure
  • Description/Symptoms: Erratic shifting, limp mode, failure to shift, Diagnostic Trouble Codes (DTCs) related to transmission solenoids or speed sensors.
  • Solution: Replacement of the conductor plate within the transmission.
  • Estimated Cost to Fix: $800 - $1500+
  • Recalls: None Found
• Valve Body Issues
  • Description/Symptoms: Harsh shifting, slipping between gears, delayed engagement.
  • Solution: Rebuilding or replacement of the valve body.
  • Estimated Cost to Fix: $1000 - $2000+
  • Recalls: None Found

Suspension

• Front Lower Ball Joint Failure
  • Description/Symptoms: Clunking noise from the front suspension, uneven tire wear, loose steering.
  • Solution: Replacement of the lower ball joints.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Strut Mount Failure
  • Description/Symptoms: Noisy suspension, clunking when going over bumps, diminished handling.
  • Solution: Replacement of the strut mounts.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

Electrical

• Instrument Cluster Pixel Loss
  • Description/Symptoms: Portions of the digital display in the instrument cluster become unreadable due to pixel failure.
  • Solution: Repair or replacement of the instrument cluster.
  • Estimated Cost to Fix: $300 - $1000+
  • Recalls: None Found
• PSE Pump Failure (Central Locking/Pneumatic System)
  • Description/Symptoms: Malfunctioning central locking, failure of the trunk release, issues with the lumbar support or seat adjustment.
  • Solution: Repair or replacement of the PSE pump.
  • Estimated Cost to Fix: $500 - $1200+
  • Recalls: None Found

Exterior

• Retractable Hardtop Malfunctions
  • Description/Symptoms: Failure of the roof to open or close, slow operation, unusual noises during operation.
  • Solution: Diagnosis and repair of hydraulic cylinders, pumps, or sensors related to the roof mechanism.
  • Estimated Cost to Fix: $500 - $3000+
  • Recalls: None Found

Interior

• Seat Heater Failure
  • Description/Symptoms: Seat heaters not functioning properly, either not heating at all or overheating.
  • Solution: Replacement of the seat heater element or control module.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Summary

The 2004 Mercedes-Benz SLK32 AMG can present owners with a variety of issues, ranging from relatively minor sensor replacements to more significant concerns like supercharger or transmission problems. Electrical glitches and retractable hardtop malfunctions are also potential areas of concern. The severity and cost of these repairs can vary widely, making pre-purchase inspections and thorough maintenance records essential for prospective buyers. Some repairs can be quite costly, especially those related to the supercharger, transmission, or retractable roof.