| Acronym |
System/Description |
| 4MATIC |
Automatically controlled four-wheel drive |
| AAC |
Automatic air conditioning |
| AAM |
All activity module |
| A/C (Automatic) |
Air conditioning (Automatic) |
| A/C (Tempmatic) |
Air conditioning (Tempmatic) |
| AB |
Airbag |
| ABS |
Anti-lock brake system |
| ACSR |
Automatic child seat recognition |
| ADM |
Automatic dimming inside rearview mirror |
| ADS |
Adaptive damping system |
| AIR |
Secondary air injection |
| AP |
Accelerator pedal |
| APS |
Auto pilot system |
| AS |
Antenna systems |
| ASD |
Automatic locking differential |
| ASR |
Acceleration slip regulation |
| AT |
Automatic transmission |
| ATA |
Anti-theft alarm |
| BA |
Backup assist |
| BARO |
Barometric pressure |
| BCAPC |
Barometric pressure-charge air pressure compensation |
| BDC |
Bottom dead center |
| BM |
Base module |
| BPC |
Barometric pressure compensation |
| CA |
Closing assist |
| CAN |
Controller area network |
| CC |
Cruise control |
| CCM |
Combination control module |
| CDC |
CD changer |
| CF |
Convenience feature |
| CFI |
Continuous fuel injection (electronic) |
| CFI |
Continuous fuel injection (mechanical) |
| CKA |
Crank angle |
| CKP |
Crankshaft position |
| CL |
Central locking |
| CMP |
Camshaft position |
| CNS |
Communication and navigation system |
| CST |
Cabriolet soft top |
| CTEL |
Cellular telephone |
| CTP |
Closed throttle position (idle) |
| CTU |
Central triggering unit |
| DAS |
Drive authorization system |
| DI |
Distributor ignition |
| DM |
Diagnostic module |
| DSV |
Drive authorization system shut-off valve |
| DTC |
Diagnostic trouble code |
| EA |
Electronic accelerator |
| EBR |
Engine braking regulation |
| ECL |
Engine coolant level |
| ECT |
Engine coolant temperature |
| EDC |
Electronic diesel control |
| EDR |
Electronic diesel regulation |
| EDS |
Electronic diesel system |
| EGR |
Exhaust gas recirculation |
| EI |
Electronic Ignition system (distributor-less) |
| EL |
Exterior lighting |
| EMSC |
Electric mirror, steering column adjustment, heated mirrors |
| EPC |
Electronic power control |
| ESA |
Electric seat adjustment |
| ESC |
Electric steering column adjustment |
| ESCM |
Engine systems control module |
| ESP |
Electronic stability program |
| ETC |
Electronic transmission control |
| ETR |
Emergency tensioning retractor |
| ETS |
Electronic traction system |
| EVAP |
Evaporative emission control system |
| FAN |
Fanfare horns |
| FFS |
Frame floor system |
| FOM |
Folding outside mirrors |
| FP |
Fuel pump |
| GIM |
Governor impulse method |
| HCS |
Headlamp cleaning system |
| HFM-SFI |
HFM sequential multiport fuel injection/ignition |
| HFS |
Hands-free system |
| HHT |
Hand-Held Tester |
| HM |
Heated mirrors |
| HORN |
Horn signal system |
| HS |
Heated seats |
| IAT |
Intake air temperature |
| IC |
Instrument cluster |
| IDC |
In-dash controller |
| IFI |
In-line fuel injection |
| IL |
Interior lighting |
| IR |
Infrared |
| IRM |
Inside rearview mirror |
| ISC |
Idle speed control |
| KS |
Knock sensor |
| KSS |
Knock sensor system |
| LCP |
Lower control panel |
| LH-SFI |
LH sequential multiport fuel injection |
| LHS |
Lefthand steering |
| LOC |
Low compression |
| LS |
Loudspeaker system |
| MAF |
Mass air flow |
| MAP |
Manifold absolute pressure |
| ME-SFI |
ME sequential multiport fuel injection/ignition system |
| MIL |
Malfunction indicator lamp |
| MSC |
Mirror, steering column adjustment, heated mirrors |
| MT |
Manual transmission |
| MVA |
Manifold vacuum assist |
| MWH |
Main wiring harness |
| NS |
Networked Systems (CAN) |
| O2S |
Oxygen sensor |
| OBD |
On board diagnostics |
| OC |
Oxidation catalytic converter |
| OCP |
Over-head control panel |
| ORM |
Outside rearview mirror |
| OSB |
Multi-contour/Orthopedic seat backrest |
| PL |
Power locking |
| PMP |
Partial intake manifold preheater |
| PNP |
Park neutral position |
| PS |
Power steering |
| PSE |
Pneumatic system equipment |
| PTS |
Parktronic system |
| PW |
Power windows |
| PWM |
Pulse width modulation |
| RB |
Roll bar |
| RCL |
Remote central locking |
| RD |
Radio |
| REST |
Residual engine heat utilization |
| RH |
Retractable hardtop |
| RHR |
Retractable rear head restraints |
| RHS |
Righthand steering |
| RPM |
Engine speed |
| RST |
Roadster soft top |
| RTG |
Retractable trunk lid grip |
| RTR |
Remote trunk release |
| RWD |
Rear window defroster |
| SBE |
Seat belt extender |
| SLO |
Starter lock-out |
| SMS |
Service microfiche system |
| SOR |
Seat occupied recognition |
| SPS |
Speed-sensitive power steering |
| SR |
Sliding/pop-up roof |
| SRS |
Supplemental restraint system |
| TB |
Throttle body |
| TC |
Transfer case |
| TCM |
Transmission control module |
| TD |
Speed signal (time division) (EZL) |
| TDC |
Top dead center |
| TIC |
Transistorized ignition control |
| TN |
Speed signal (EZL/AKR) |
| TPC |
Tire pressure control |
| TRAP |
Trap oxidizer |
| TWC |
Three way catalytic converter |
| VAF |
Volume air flow |
| VSS |
Vehicle speed signal |
| WS |
Wiper system |
| WOT |
Wide open throttle (full load) |
