2011 Mercedes-Benz R350
2011 Mercedes-Benz R350
Overview
The 2011 Mercedes-Benz R350, a versatile luxury crossover, offers a blend of SUV and minivan practicality with premium comfort. It was available with a choice of gasoline and diesel powertrains, primarily the 3.5L V6 gasoline engine and the 3.0L V6 turbodiesel. The R350 is generally considered a reliable vehicle, though like any complex machine, it has specific areas that have seen more attention from owners. This analysis focuses on documented technical issues beyond routine maintenance, providing insights into potential concerns for prospective buyers or current owners.
Engine
3.5L V6 (M272)
Intake Manifold Runner Flap Actuator Failure
- Symptoms: Check engine light, rough idle, loss of power, P2004/P2005/P2006 codes.
- Solution: Replacement of the intake manifold or repair kit for the actuator.
- Cost: $600 - $1200
Balance Shaft Wear
- Symptoms: Check engine light, rough idle, misfires, P0016/P0017 codes.
- Solution: Replacement of the balance shaft and timing components.
- Cost: $2500 - $4500
3.0L V6 Turbodiesel (OM642)
Diesel Particulate Filter (DPF) Issues
- Symptoms: Reduced engine power, check engine light, regeneration failures, increased fuel consumption.
- Solution: Forced regeneration, DPF cleaning, or replacement.
- Cost: $1000 - $3000
AdBlue Injector Failure
- Symptoms: Check engine light, emissions system warnings, reduced engine performance.
- Solution: Replacement of the AdBlue injector.
- Cost: $400 - $800
Transmission
7G-TRONIC (722.9) 7-Speed Automatic
Valve Body Malfunction
- Symptoms: Harsh shifting, delayed engagement, transmission warning light, limp mode.
- Solution: Repair or replacement of the valve body.
- Cost: $1500 - $3000
Torque Converter Issues
- Symptoms: Shuddering at low speeds, slipping, rough engagement.
- Solution: Replacement of the torque converter.
- Cost: $1200 - $2500
Suspension
Standard Air Suspension (Optional)
Air Spring Leaks
- Symptoms: Vehicle sagging on one side, compressor running excessively, suspension warning light.
- Solution: Replacement of leaking air springs or air lines.
- Cost: $500 - $1000 per corner
Air Compressor Failure
- Symptoms: Inability to raise or lower the vehicle, constant compressor operation, suspension warning light.
- Solution: Replacement of the air compressor unit.
- Cost: $700 - $1500
Standard Coil Spring Suspension
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Electrical
General Electrical System
CAN Bus Communication Errors
- Symptoms: Intermittent electrical faults, warning lights on the dashboard, malfunctioning accessories.
- Solution: Diagnosis and repair of faulty modules or wiring.
- Cost: $300 - $1000+
Headlight Control Module Failure
- Symptoms: Headlights not working, flickering, or adaptive lighting system errors.
- Solution: Replacement of the headlight control module.
- Cost: $300 - $600
Exterior
General Exterior
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Interior
General Interior
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Summary Verdict
The 2011 Mercedes-Benz R350 presents a generally solid reliability record, particularly for its standard coil spring suspension and interior components. However, owners should be aware of potential issues with the gasoline V6 engine, specifically the intake manifold runner flap actuator and balance shaft wear, which can be costly to repair. For diesel models, DPF and AdBlue system maintenance are key considerations. The 7-speed automatic transmission can experience valve body or torque converter problems. Optional air suspension systems, while offering comfort, are prone to leaks and compressor failures. Addressing these potential issues proactively through diligent maintenance and prompt repairs can help ensure a positive ownership experience.