2003 Mercedes-Benz C240

Introduction:

The 2003 Mercedes-Benz C240 is a luxury sedan powered by a 2.6L V6 engine producing 168 horsepower and 184 lb-ft of torque. It comes standard with a 5-speed automatic transmission. The C240 is known for its comfortable interior, responsive handling, and high-quality materials. However, like any vehicle, it has certain issues that owners may encounter.

Engine

• M272 V6 Engine
  • Valve Timing Solenoid Failure: Description/Symptoms: Erratic engine idling, loss of power, engine misfires. Solution: Replace the faulty valve timing solenoid. Estimated Cost to Fix: $200 - $500+
  • Balance Shaft Gear Failure: Description/Symptoms: Whining or grinding noises from the engine, decreased engine performance. Solution: Replace the balance shaft gear and chain. Estimated Cost to Fix: $1,000 - $2,000+
  • Intake Manifold Flap Failure: Description/Symptoms: Loss of engine power, decreased fuel economy, engine misfires. Solution: Replace the intake manifold with an updated version. Estimated Cost to Fix: $400 - $700+

Transmission

• 5G-Tronic Automatic Transmission
  • Shifting Problems: Description/Symptoms: Difficulty shifting gears, slipping, or jerking during shifts. Solution: Replace transmission solenoids or the transmission control module. Estimated Cost to Fix: $500 - $2,000+

Suspension

• Front Control Arm Bushings Wear: Description/Symptoms: Squealing or knocking noises when turning, loose steering, uneven tire wear. Solution: Replace the worn bushings. Estimated Cost to Fix: $200 - $500+
• Rear Trailing Arm Bushings Failure: Description/Symptoms: Excessive vibration, poor handling, clunking or knocking sounds from the rear of the vehicle. Solution: Replace the bushings. Estimated Cost to Fix: $300 - $700+

Electrical

• Headlamp Control Module Failure: Description/Symptoms: Headlights or taillights may not function properly, flickering or intermittent operation. Solution: Replace the headlamp control module. Estimated Cost to Fix: $200 - $400+
• Battery Discharge: Description/Symptoms: Battery drains quickly or fails to hold a charge. Solution: Inspect the electrical system for potential parasitic drains, such as faulty sensors or modules. Estimated Cost to Fix: $100 - $500+
• Alternator Failure: Description/Symptoms: Dimming lights, electrical system malfunctions, battery warning light illuminated. Solution: Replace the alternator. Estimated Cost to Fix: $500 - $1,000+
• SAM Control Module Failure: Description/Symptoms: Various electrical issues, such as power window failure, sunroof malfunction, or door lock problems. Solution: Replace the SAM control module. Estimated Cost to Fix: $500 - $1,500+

Exterior

• Window Regulator Failure: Description/Symptoms: Power windows may not function properly, slow or intermittent operation. Solution: Replace the window regulator. Estimated Cost to Fix: $200 - $500+
• Door Lock Actuator Failure: Description/Symptoms: Doors may not lock or unlock properly, intermittent operation. Solution: Replace the door lock actuator. Estimated Cost to Fix: $100 - $300+

Interior

• A/C Blower Motor Failure: Description/Symptoms: Air conditioning system not blowing air or making loud noises. Solution: Replace the blower motor. Estimated Cost to Fix: $200 - $400+
• Navigation System Malfunction: Description/Symptoms: Navigation system may freeze, provide incorrect directions, or not function at all. Solution: Update or replace the navigation software or hardware. Estimated Cost to Fix: $500 - $1,500+
• SRS Control Module Failure: Description/Symptoms: Airbag warning light illuminated, airbags may not deploy in a crash. Solution: Replace the SRS control module and reprogram the system. Estimated Cost to Fix: $1,000 - $2,000+

Summary:

The 2003 Mercedes-Benz C240 has a range of potential issues that can affect various components. Some of the more severe and costly issues include balance shaft gear failure, intake manifold flap failure, transmission shifting problems, and rear trailing arm bushing failure. However, most issues can be addressed with relatively low repair costs.