2013 Mercedes-Benz S400

The 2013 Mercedes-Benz S400 Hybrid is a luxury sedan known for its smooth ride, opulent interior, and advanced technology features. It combines a 3.5-liter V6 engine with an electric motor, producing a combined 302 horsepower and 273 lb-ft of torque. Other engine options available on the 2013 S-Class include the S550’s 4.7-liter twin-turbo V8, the S63 AMG’s 5.5-liter twin-turbo V8, and the S65 AMG’s 6.0-liter twin-turbo V12. All engines are paired with a 7-speed automatic transmission. Owners often praise the S400 Hybrid for its fuel efficiency compared to other large luxury sedans and its comfortable cabin. However, some common complaints include the complexity of the hybrid system and the potential for expensive repairs.

Electric Motor

Hybrid Electric Motor

• Hybrid Battery Failure
  • Description/Symptoms: Reduced fuel economy, error messages related to the hybrid system, inability to use electric motor, car won’t start
  • Solution: Replace the hybrid battery pack.
  • Estimated Cost to Fix: $8,000 - $12,000+
  • Recalls: None Found
• Electric Motor Malfunction
  • Description/Symptoms: Noticeable reduction in acceleration, inability to start the vehicle, warning lights illuminating on the dashboard.
  • Solution: Have the electric motor inspected by a qualified technician. They might recommend a motor replacement.
  • Estimated Cost to Fix: $5,000+
  • Recalls: None Found

Transmission

7G-Tronic 7-Speed Automatic

• Valve Body Issues
  • Description/Symptoms: Harsh or erratic shifting, slipping between gears, delayed engagement, or failure to shift at all.
  • Solution: Replacement of the valve body. Some shops may attempt a rebuild, but replacement is often more reliable.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Suspension

• Airmatic Suspension Failure
  • Description/Symptoms: Vehicle sits unevenly, ride quality is bouncy or harsh, “Vehicle Level Too Low” error message.
  • Solution: Diagnosis to determine which component has failed (air strut, air compressor, valve block, or air lines). Repair or replace the faulty component. Often the air struts are the culprit.
  • Estimated Cost to Fix: Air strut replacement (per strut): $1,000 - $2,500+, Air compressor replacement: $800 - $1,500+
  • Recalls: None Found

Electrical

• COMAND System Issues
  • Description/Symptoms: System freezes, reboots unexpectedly, navigation malfunctions, display issues, or audio problems.
  • Solution: Software update, replacement of the COMAND unit, or repair of faulty wiring.
  • Estimated Cost to Fix: $500 - $2,000+ depending on the severity of the issue and repair needed
  • Recalls: None Found
• Seat Control Module Failure
  • Description/Symptoms: Seat does not adjust properly, memory function does not work.
  • Solution: Seat control module replacement or repair.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found
• Parking Sensor Malfunction
  • Description/Symptoms: False alarms or complete failure of the parking sensors.
  • Solution: Replacement of faulty parking sensors.
  • Estimated Cost to Fix: $200 - $800
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: Sunroof jams, won’t open or close properly, or leaks.
  • Solution: Cleaning and lubrication of sunroof tracks, repair of damaged components, or replacement of the sunroof assembly.
  • Estimated Cost to Fix: $200 - $1,500+ depending on the problem.
  • Recalls: None Found

Interior

• No Issues Found

Summary The 2013 Mercedes-Benz S400 Hybrid, while offering a luxurious experience, is prone to a range of issues. The most concerning are those related to the hybrid system and Airmatic suspension. Repair costs can be significant, particularly for the hybrid battery and suspension components. Electrical issues with the COMAND system and seat control module are also common and potentially expensive to address. These issues can impact the ownership experience.