Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Brake Assist (BAS)
Traction Control:
Traction Control System (TCS)
Passive Features
Airbags:
Front dual-stage airbags, front side-impact airbags, window curtain airbags
Seatbelts:
3-point inertia-reel seatbelts with pretensioners and force limiters
Body Structure:
High-strength steel passenger cell, crumple zones
💡 Technology Features
Infotainment
System Name:
COMAND APS (Cockpit Management and Navigation EXperience)
Display Size:
7-inch color display
Navigation Media:
DVD-ROM for navigation maps (region-specific)
Driver Assistance
Adaptive Cruise Control:
Optional DISTRONIC (depending on vehicle specification)
Parking Assistance:
Optional PARKTRONIC parking sensors (front and rear)
Lane Keeping:
Optional Lane Keeping Assist (LKA) and Blind Spot Assist (BSA)
Connectivity
Bluetooth Handsfree:
Standard integrated Bluetooth telephony
Media Interface:
Optional Media Interface (MI) allowing connection of external audio/video devices (e.g., iPod, USB)
Audio
Premium Audio Option:
Optional Harman Kardon LOGIC 7 surround sound system
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 10,000 miles or 12 months, whichever comes first (using synthetic oil)
Major Service Interval:
Flexible Service System (FSS) based, typically around 30,000-40,000 miles for spark plugs, transmission service
Brake Fluid Change:
Every 2 years (DOT 4)
Fluid Specifications
Engine Oil Cls350:
MB 229.5 (e.g., Mobil 1 0W-40, Castrol EDGE 0W-40)
Engine Oil Cls550:
MB 229.5 (e.g., Mobil 1 0W-40, Castrol EDGE 0W-40)
Coolant:
MB 325.0 / 326.0 (Antifreeze/Coolant, blue color)
Power Steering Fluid:
MB 343.0 or MB 345.0 (Hydraulic fluid, green color)
Known Issues
Engine M272 Balance Shaft Wear:
Premature wear of the balance shaft sprocket in certain M272 engines (affecting CLS350) can lead to check engine light and rough running. Requires timing chain and sprocket replacement.
Transmission 7G Tronic:
Occasional rough shifting or transmission control module (TCM) issues. Regular fluid and filter changes are crucial.
Air Suspension Components:
Air springs (struts) can develop leaks over time, leading to vehicle sag. Control modules can also be a point of failure.