BMW Information | BMW Technical Abbreviations

Comprehensive Glossary of Technical Acronyms, Abbreviations, and Terminology Found in BMW User Manuals and Service Documents.


AAR Automatic Air Recirculation.

AB Airbag (airbag system).

ABL Brake system warning Lamp.

ABS Anti-lock Braking System.

AC Air Conditioning.

ACC Active Cruise Control.

ACS Active Comfort Seats.

ACSM Advanced Crash Safety Module.

ADB / ADB-X Automatic Differential Braking.

ADAS Advanced Driver Assistance System.

ADS Engine intake air control.

ADV Windshield wiper pressure control.

AEGS Automatic Electronic Gearbox Control (also EGS).

AFM Air Flow Meter.

AGD Suction silencer.

AGR Emission reduction.

AGS Adaptive transmission control.

AG Automatic Gearbox (transmission).

AHL Adaptive Headlights.

AHK Active rear-axle Kinematics.

AHK Trailer hitch.

AHM Trailer Module (not US models).

AHPS Advanced HPS.

AIC Automatic Interval Control (rain sensor).

AKF Activated carbon canister.

AKS Active head restraint.

AKS Pressure regulating device.

ALC Automatic Light Control.

ALR Automatic Lamp Range Adjustment.

ALR Automatic-locking retractors.

AMM Air Mass Meter.

AMP Radio system Amplifier.

ARI Car radio information system.

ARRB Automatic Rear Roller Blind.

ARS Active Roll Stabilization.

ASC All Season traction.

ASC Automatic Stability Control.

ASC-EZA ASC w/ engine timing and injection intervention.

ASC+T ASC+ Traction control.

ASK Audio System controller (Kontroller).

ASR Self starter block relay.

AST Automatic Slip control (marketing term).

AST All Season Traction.

AT Antenna.

ATF Automatic Transmission Fluid.

ATL Exhaust gas turbo charger.

AS Active Steering.

AUC Automatic air recirculation.

AUT Automatic transmission.

AVT Antenna amplifier Tuner.

AZD Tightening torque specifications.

A/D Analog/Digital.


B Benzene (petrol, gasoline).

BAT Battery.

BC Board Computer.

BC1 Body Controller (#1).

BL Brake Light.

BLS Brake Light Switch.

BMBT Board Monitor.

BMW Bavarian Motor Works (Bayerische Motoren Werke).

BS Block diagram.

BST Battery Safety Terminal.

BVA Brake pad wear indicator.

BZM Center console control center.

BZMF Center console control center, rear.


CA Comfort Access, also Client Advisor.

CAN Controller Area Network (Multiple ECU Controller).

CAN-Bus Controller Area Network (bus).

CANH-Bus CAN bus, High.

CANL-Bus CAN bus, Low.

CANP Fuel tank ventilation valve.

CAS Car Access System.

CBC Corner Braking Control.

CBC Cornering Brake Control.

CBS Condition Based Service.

CCC Car Communications Computer.

CCM Check Control Module.

CD Control Display.

CDC Compact Disk Changer.

CDS CD player.

CDV Clutch Delay Valve.

CEL Celsius.

CID Central Information Display.

CIM Chassis Integration Module.

CIP Coding, Individualization, Programming.

CO Carbon monoxide.

COMBI Electronic Instrument Cluster.

CON Controller.

CPO Certified Pre-Owned.

CSL Club Sport Lightweight (Club Sport Leicht).

CU Copper.

CVM Convertible top Module.

CVT Constantly Variable Transmission.

CW Drag coefficient.

CWP Cold Weather Package.


D-Bus Diagnosis bus (same as TXD).

D1 Xenon light/ gas discharge.

DBC Dynamic Brake Control.

DBS Dynamic Braking System.

DCC Dynamic Cruise Control.

DCS Dealer Communication System.

DD Dynamic motor Drive.

DDE Digital Diesel Electronics.

DE Diagnostic Unit.

DIN German industrial standards.

DIS Diagnosis and Information System.

DISA Differential air intake control.

DIVA Continuously variable length intake runners.

DK Throttle housing/valve.

DKB Throttle w/ brake intervention.

DKE Throttle Increase.

DKI Throttle position.

DKR Throttle reduction.

DKT Throttle position signal.

DKV Preset throttle position value.

DM-TL Diagnostic Module Tank Leakage.

DME Digital Motor Electronics.

DOHC Double Over Head Camshafts.

Double VANOS Steplessly variable intake and exhaust valve timing.

DRL Daytime Running Lights.

DS gasket set.

DSC Dynamic Stability Control.

DSP Digital Sound Processing.

DTC Diagnostic Trouble Code (SAE).

DTC Dynamic Traction Control.

DWA Theft deterrent system.

DWS Tire pressure Warning System.

DZM Revolution counter.


E-KAT Electrically heated catalytic converter.

EBV Electronic Brake force proportioning.

ECE European market version.

ECM Engine Control Module (SAE term).

ECO Controller for I-Drive system.

ECU Electronic Control Unit.

ED European Delivery.

EDC Electronic Dampening Control.

EDC-K Electronic Dampening Control - Continuous.

EDK Electronic throttle valve.

EDR Electronic throttle control.

EDS pressure regulator.

EFH Electric window lifter.

EGS Electronic transmission control.

EH Electronic-Hydraulic.

EHC Electronic Height Control.

EKM Electronic body Module.

EKP Electric fuel Pump.

ELV Electronic steering lock.

EM Electro-Mechanical.

EMF Electro-Mechanical parking brake.

EML Electronic Motor Load regulation.

EMV Electro-Magnetic sensitivity.

EO Component location.

EPC Electronic Parts Catalog (also ETK).

EPROM Erasable/ Programmable chip Memory.

ESS Electronic anti-theft device.

ETK Electronic parts catalog (also EPC).

ETM Electrical Troubleshooting Manual.

EV Injection Valve.

EWS Electronic drive-away protection.

EZA Same as ASC-EZA.


FB Function description.

FBC Fading Brake Control.

FBD Remote control services.

FBZV Radio frequency locking system.

FDRS Fold Down Rear Seats.

FGR Vehicle Speed Control (Cruise Control).

FH Window lifter.

FHK Rear Heater/ air conditioner.

FLC Automatic Light Control.

FRU Flat Rate Unit.

FS Crash Sensor.

FTM Flat Tire Monitor.

FZV Central lock receiver.


GAL Speed dependent sound volume.

GM General Module.

GMR Yaw moment control.

GPS Global Positioning System.

GRII Cruise control.

GRS Rotation Rate Sensor.

GS Belt Tensioner.

GWK Torque converter lock-up control.


H2 Xenon headlights.

HA Rear Axle.

HC Hydro Carbon.

HD Heavy Duty.

HDC Hill Decent Control.

HFM Hot Film air mass Meter.

HG Manual Gearbox (transmission).

HKL Hydraulic trunk lid Lift.

HLM Hot Wire Air Mass Meter.

HPS Head Protection System.

HR Heater control.

HU Head Unit.

HUD Heads Up Display.

HVA Hydraulic Valve Adjuster.

HWS Headlight Washer System.

Hz Hertz (Cycle).


I-Bus Information bus.

IB Interior lighting control signal.

IHKA Automatic Heating and A/C.

IHKAF IHKA w/ micro filter.

IHKR Regulated Heating and A/C.

IHKRF IHKR w/ micro filter.

IHKS Standard Heating and A/C.

IHPD Internal High Pressure Deformation.

IHR Integrated Heater control.

IKE Instrument cluster Electronics.

ILH Interior Lighting, rear.

ILV Interior Lighting, front.

IMS Instant Mobility System.

IR Infrared.

IRS Infrared Locking System.

ISC Idle Speed Control.

ISIS Intelligent Safety and Information System.

ISN Individual Serial Number.

ISOFIX Standardized mounts for child restraints.

ITS Head airbag assembly/ Inflatable Tubular Structure.

IVM Integrated power supply Module.



K-Bus Body bus (Karosserie).

KAT Catalytic converter.

KATON Converter creating (signal).

KD Kick-Down.

KHI Interface for headphones.

KL Terminal designation.

KL15 Run bus (ignition switch run position).

KL30 Battery bus (hot at all times).

KL31 Ground bus (chassis ground).

KL50 Start bus (ignition start position).

KLR Accessory bus.

KO Compressor ON signal.

KOMBI Instrument cluster.

KOREL Compressor relay signal.

KR Contact Ring.

KSK Knock Sensor.

KVA Fuel consumption signal/value.

KW Crankshaft.

KW Kilowatt.


LCM Lamp Check Module.

LDP Leak Diagnosis Pump.

LEV Low Emissions Vehicle.

LEW Lateral acceleration sensor.

LHD Left-Hand Drive.

LKM Lamp control Module.

LL Closed throttle.

LM Light Module.

LMM Air flow meter/sensor.

LMR Light alloy wheel.

LRA Vertical headlight aiming.

LSM Steering column memory.

LSZ Lamp Switching center.

LVA Air supply system (for EHC system).

LVDS Low Voltage Differential Signalling.

LWR Vertical headlight aim control.

LWRT Low Weight Reinforced Thermoplastics.

LWS-5 Steering angle sensor.


M-Bus IHKA/IHKR stepper motor bus.

MAL Center armrest.

MBC Maximum Brake Control.

MDK Motorized throttle valve/system.

MFC Multi-Function Controller.

MFL Multi-Function steering wheel.

MFS Multi-Function Steering Wheel.

MFU Multi-Function Clock.

MID Multi-Information Display.

MIL Malfunction Indicator Lamp (SAE), "check engine".

MIR Multi-Information Radio.

MMC Multi-Media Changer.

MoDiC Mobile Diagnostic Computer.

MOST-Bus Media Oriented System Transport bus.

MRS Multiple Restraint System.

MSR Engine drag torque Regulation.

MV Magnetic Valve (solenoid Valve).


n-ab Rotational speed, transmission (rpm).

n-mot Rotational speed, engine (rpm).

NAVI Navigation module.

NG New Generation (N73 engine).

NG Tilt sensor.

NOX Nitrogen Oxides/ exhaust gas recirculation.

NSD Rear muffler.

NSL Rear fog Lamp.

NSW Fog lamp.

NTC Negative Temperature Coefficient.

NW Camshaft.


OBC On-Board Computer.

OBD On-Board Diagnosis.

OEM Original Equipment Manufacturer.


P-Bus Periphery bus.

P/N Park/Neutral position.

PB Pin assignments.

PBS Parts Bulletin System (in TIS).

PCD Performance Center Delivery.

PDC Park Distance Control.

PDI Pre-Delivery Inspection.

PGS Passive Go System.

PM Power Module.

PP Impact Pad.

PTC Positive Temperature Coefficient.

PuMA Product and Measures Management in After sales.

PWG Pedal position sensor/ potentiometer.



RA Repair instructions.

RAL Aluminium wheels.

RAL Standard color.

RAM Random Access Memory.

RDC Tire pressure Control.

RDS Radio Data-broadcast System.

RDW Tire pressure Warning.

RFT Run Flat Tires.

RHD Right-Hand Drive.

RLS Rain-Light Sensor.

RM Relay Module.

ROZ Research Octane rating/ fuel grade.

RPA Tire puncture warning.

RPS Rollover Protection System.

RS Repair kit.

RSC Run flat System Components.

RSW Back-up lamp.

RXD Wake-up Diagnosis line.

RZV Direct stationary ignition.


SA Sales Advisor or Service Advisor.

SASL Satellite, A-pillar left.

SASR Satellite, A-pillar right.

SAV Sport ACTIVITY Vehicle.

SB Fuse assignments.

SBE Seat occupancy detector/sensor.

SBFH Seat module, passenger-side rear.

SBK Safety Battery Terminal Clamp (???).

SBSL Satellite, B-pillar left.

SBSR Satellite, B-pillar right.

SBT SI techniques/ tech reference information (in TIS).

SCA Soft Close Automatic/Actuator.

SD Silencer/ muffler.

SD Sliding roof.

SE Special Equipment.

SES Voice Recognition System.

SFAH Seat module, driver's side rear.

SFZ Satellite, vehicle center.

SG Control unit.

SGS Seat integrated belt System.

SHD Sliding/ lifting roof.

SHD Sunroof module (also SHDM).

SI Service Information (in TIS).

SIA Service Interval system (ver. I, II, III, IV, etc.).

SII Service Interval Indicator.

SIL Silicon.

SIM Safety Information Module.

SINE Siren/tilt sensor.

SKD Steel sliding roof.

SKHD Steel sliding/ lifting roof.

SM Seat Module.

SM/SPM Seat/Mirror Memory.

SMBF Seat Module, passenger side.

SMFA Seat Module, driver's side.

SMG Sequential Manual Gearbox.

SP Schematic.

SRA Headlight/fog light cleaning.

SRS Supplemental Restraint System.

SSD Steel sliding roof.

SSH Seat Satellite, rear seat.

ST Connector views.

Steptronic Transmission shift control.

STVL Satellite, left front door.

STVR Satellite, right front door.

SULEV Super Ultra Low Emissions Vehicle (not coined by BMW).

SVS Speech processing System.

SWR Headlamp cleaning system.

SWZ Special tool listings (in TIS).

SZL Switch center, steering column.

SZM Central switch center Module.


TAGE Door handle Electronics.

TCM Transmission Control Module.

TD Engine speed signal (ignition pulse).

TD Technical Data (in TIS).

TDD Technical Documentation Disk.

TE Fuel evaporation control.

TEL Telephone control unit.

TEV Evaporative purge control.

THZ Tandem master cylinder.

ti Injector ON Time (duration).

TIS Technical Information System.

TL Part throttle / load signal.

TLEV Transitional Low Emission Vehicle.

TMBFT Door Module, passenger side.

TMBFTH Door Module, passenger side rear.

TMC Traffic Message Channel.

TMFAT Door Module, driver's side.

TMFATH Door Module, driver's side rear.

TP Tandem Pump.

TP Traffic Program.

TPC Tire Pressure Control.

TPM Tire Pressure Monitor.

TPS Throttle Position Switch/Sensor.

TR Engine speed signal (rpm).

TR Transistor.

TRG Fuel level sensor.

TRI Technical Reference Information (also SBT).

TRS Battery isolation Switch.

TSB Technical Service Bulletin.

TSD Torsional vibration dampener.

TSH Door lock Heating.

TSZI Transistorized coil Ignition system.

TU Technical Update (as in M50tu).

TXD Transmitting Diagnosis line.


U-batt Battery voltage.

U-vers Supply voltage.

UERSS Rollover bar.

URS Rollover protection System.

USIS Ultrasonic passenger compartment Sensor.


V Vorn (front).

V Vehicle road speed.

VA Front Axle.

VAC Voice Activated Control.

VANOS Variable camshaft timing.

VAT Front axle support.

VDC Vehicle Distribution Center.

VEP Distributor-type injection Pump.

VID VIDeo module.

VL Full load (wide open throttle).

VPC Vehicle Preparation Center.

VSD Front muffler.

VVT Valve tronic.


WBG Hazard warning switch.

WIM Wiper control Module.

WK Torque converter lock-up clutch.

WSS Wind Shield.

WT Valve tronic control unit.




ZAB Ignition fade-out (reduction).

ZAE Central Airbag Electronics.

ZAS Ignition starter switch.

ZCP Competition Package (M3).

ZCW Cold Weather Package.

ZGM Central Gateway Module.

ZHP Performance Package (Available on US-Market e46 330i/Ci/Cic Only).

ZK Cylinder head.

ZKE Central body Electronics.

ZKH Cylinder head cover.

ZMS Dual-Mass flywheel.

ZPP Premium Package.

ZS Central lock.

ZSD Centre muffler.

ZSP Sport Package.

ZV Central locking system.

ZVM Central locking Module.

ZWD Idle control valve.


1. Various BMW vehicle manuals.

2. Wikipedia: Automotive acronyms.

[ back to top ]