Acronyms and Abbreviations

List of Acronyms and Abbreviations Used in W220

 15 Switched +ve
 15R Switched +ve Ign Posn 1,2,3
 30 Battery +ve continuous
 30Z Circuit 30 First Input
 31 Ground or 0V
 50 Starter control direct
 AAC Automatic Air Conditioner
 ABC Active Body Control
 A/C Air Conditioner
 ACC Automatic Climate Control
 ACF Activated Charcoal Filter
 AKF Aktivkohle Filter {Activated Charcoal Filter}
 AIRmatic Airmatic Suspension/Shock Absorber System
 ASRA ASRA is an electronic catalogue of work units and flat rates that facilitates the fast and reliable search for 
  operation items, working hours and damage codes. ASRA also includes additional operations, included work texts, notes 
  and graphics of vehicle parts.
 ASSYST Active Service System
 BL Blae or Blue
 BLS Stop Lamp Switch NO Contact
 BR Braun or Brown
 CAN Controller Area Network
 CAN-B H CAN Interior Bus High
 CAN-B L CAN Interior Bus Low
 CAN-C H CAN Engine Compartment Bus High
 CAN-C L CAN Engine Compartment Bus Low
 CDC CD Changer
 CGW Central Gate Way
 CO Carbon Monoxide
 COMAND Cockpit Management and Data
 CVN Calibration Verification Number
 D2B COMAND Version in updates
 DAS Diagnosis Assistance System
 DAS Drive Authorisation System
 DCM Door Control Module
 DMS Dealer Management System
 DTC Diagnostic Trouble Codes
 DTR Distronic
 EIS Electronic Ignition/Starter Switch
 EPC Electronic Parts Catalogue
 ETC Electronic Transmission Control
 EOBD European On-Board Diagnosis
 ESA Electric Seat Adjustment
 ESM Electronic Selector Module
 ESP Electronic Stability Programme
 ETR Emergency Tensioning Retractor
 EZS Electronic Ignition/Starter Switch
 FAQ Frequently Asked Question
 FIN European Vehicle Identification Number
 FG Function Group
 FL Front Left
 FR Front Right
 FUG Function subGroup
 GE Gelb or Yellow
 GN Grün or Green
 HL Hinter Links or Rear Left 
 HR Hinter Rechts or Rear Right   
 HVAC Heating Ventilation and Air Conditioning
 ICM Instrument Cluster with Maintenance Interval Display 
 KAM Keep Alive Memory
 LHD Left Hand Drive
 M-B Mercedes-Benz
 MAF Mass Air Flow
 ME Motor Electronics
 MIL Malfunction Indicator Lamp
 MOST Older COMAND Version pre update
 MRM Steering Column Module (SCM)
 MSS Maintenance Service System
 NAVI Navigation
 NF Transparent or Transparent
 NOx Nitrous Oxide
 OBD Onboard Diagnosis
 OBD I On-Board Diagnosis I: Non Standardized (Each manufacturer has different functions and versions).
 OBD II (also OBD 2) On-Board Diagnosis II: Standardized as used by M-B
 OCP Overhead Control Panel
 PCM Powertrain Control Module
 PID Parameter identification
 PL65 Price List in Euros
 PSE Pneumatic System Equipment
 PTS Parktronic System
 REST Residual Heat and Ventilation
 RHD Right Hand Drive
 RF Radio Frequency
 RL Rear Left
 RR Rear Right
 RS Rosa or Pink
 RT Rot or Red
 SA Code Vehicle Data Sheet Code or Options Code eg 804
 SAM Signal Acquisition and Actuation Module
 SCM Steering Column Module (MRM)
 SCN Software Calibration Number
 STAR Diagnosis System used to program components on MB cars
 STAR Utilities Contains Media, Video and pdf Lessons on M-B Vehicles
 SW Schwarz or Black
 TBD To Be Determined
 TBC To Be Confirmed
 TV TV Tuner
 UCP Upper Control Panel
 VCS Voice Control System
 VI Violett or Violet or Purple
 VIN Vehicle Identification Number (17 digits)
 VGS Fully Integrated Transmission Control Unit
 VL Vor Links or Front Left 
 VR Vor Rechts or Front Right 
 VRV Improved Repair Verification
 WIS Workshop Information System
 XD Xentry Diagnostics: MB Diagnostic Assistance System for newer vehicles, 204, 207, 212)
 Xentry DAS M-B Diagnostic Assistance System for older models