Technical Service Bulletins: Other Variant
WARNING: This page is about the RS 7 Base, which is a different variant/trim than selected.
- A/C Compressor
- Accessories & Equipment
- Accessories Control Systems
- 00 SD Creator: How To Set Up And Use The SD Creator For Obtaining Vehicle Software Updates Via The MIRRORSERVER (GROUP 00, NO. 23-82)
- 91 Navigation, BLUETOOTH, Smartphone Interface, And Voice Recognition Is Not Available (GROUP 91, NO. 23-33)
- 91 MMI/MIB: Freezes Or Crashes And Restarts When Searching For A Contact In The Address Book (GROUP 91, NO. 23-59)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- 91 Multiple Vehicle Features (Acc, NAV, DRIVESELECT, Etc.) Are Not Available, DTC P164700 Is Stored In The ECM (GROUP 91, NO. 20-76)
- 91 Night Vision System Inoperative, DTC B201000 Is Stored In The Night Vision Control Module (GROUP 91, NO. 20-91)
- 17 Range Display (Distance To Empty) In The On-Board Computer (GROUP 17, NO. 20-06)
- 91 MIB2 High Scale Software Update Instructions (Pr Code 7UH) (GROUP 91, NO. 19-65)
- Air Bag, SRS
- Anti-Lock Brakes
- Anti-Theft Systems
- 96 Anti-Theft Alarm Activates For No Reason Or Does Not Activate (GROUP 96, NO. 25-22)
- 57 Vehicle Locking System, Diagnostic Information (GROUP 57, NO. 24-65)
- 57 Door Handle Touch Sensors (AUDI Advanced Key) Inoperative (GROUP 57, NO. 24-53)
- 57 Remote Control Key Inoperative (GROUP 57, NO. 17-38)
- 00 Service Info: Workshop Mode With AUDI Connect Vehicles (GROUP 00, NO. 23-73)
- 57 AUDI Advanced Key Inoperative (GROUP 57, NO. 23-08)
- 57 Personalized Memory Settings Of The Key Are Not Available (GROUP 57, NO. 18-49)
- Automatic Trans
- Auxiliary Emission Control Systems
- 01 Automatic Detection Of Unauthorized Chip Tuning (TD1 Warranty Key) (GROUP 01, NO. 23-81)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- 01 Engine Sporadically Difficult To Start - 4.0TFSI (GROUP 01, NO. 19-00)
- 01 Engine Warning Lamp On, DTC For Oxygen Sensor After Catalytic Converter (P013E00, P014A00) (GROUP 24, NO. 16-55)
- Axle Shafts
- Battery Management Systems
- Blowers, Superchargers & Turbochargers
- Body Electrical
- Body Interior
- 01 DTC U140A00 Terminal 30 Is Stored In The ECM (GROUP 01, NO. 25-62)
- 00 SD Creator: How To Set Up And Use The SD Creator For Obtaining Vehicle Software Updates Via The MIRRORSERVER (GROUP 00, NO. 23-82)
- 91 MMI/MIB: Freezes Or Crashes And Restarts When Searching For A Contact In The Address Book (GROUP 91, NO. 23-59)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- 91 Multiple Vehicle Features (Acc, NAV, DRIVESELECT, Etc.) Are Not Available, DTC P164700 Is Stored In The ECM (GROUP 91, NO. 20-76)
- 91 Night Vision System Inoperative, DTC B201000 Is Stored In The Night Vision Control Module (GROUP 91, NO. 20-91)
- Brakes Control Systems
- Charging Systems
- Clutch
- Collision/Avoidance
- 90 AUDI Pre Sense - Restricted Function Icon Is Displayed After Switching On Ignition (GROUP 90, NO. 25-74)
- 91 Parking Assistance Provides False Warnings (GROUP 94, NO. 06-03)
- 90 Lane Change Assist Radars Cannot Be Calibrated After Replacement B201200 (GROUP 90, NO. 23-67)
- 91 MIB2 High: Lowering Volume For The Parking System Does Not Work (GROUP 91, NO. 22-88)
- 91 Parking Assist Alert Showing An Active False Positive, Various DTCS May Be Stored (GROUP 91, NO. 20-14)
- 91 Night Vision System Inoperative, DTC B201000 Is Stored In The Night Vision Control Module (GROUP 91, NO. 20-91)
- Communication Devices
- 93 PSS: Warning Message: "Electrical System: Fault. Please Contact Workshop" (E-Tron Gt) (GROUP 91, NO. 25-40)
- 91 MMI: BLUETOOTH Does Not Work (Adaption Channel Deactivated) (GROUP 91, NO. 24-43)
- 91 ASI: Apple CARPLAY Pops Up Or Takes Over Audio Without User Intervention (GROUP 91, NO. 24-68)
- 91 Navigation, BLUETOOTH, Smartphone Interface, And Voice Recognition Is Not Available (GROUP 91, NO. 23-33)
- 97 12V Charging Socket/Cigarette Lighter Socket Not Working (GROUP 90, NO. 23-04)
- 91 MMI/MIB: Freezes Or Crashes And Restarts When Searching For A Contact In The Address Book (GROUP 91, NO. 23-59)
- 91 MIB3: Failure To Establish A BLUETOOTH Connection With IOS 16.0.X (IPHONE) (GROUP 91, NO. 22-45)
- 91 Multiple Vehicle Features (Acc, NAV, DRIVESELECT, Etc.) Are Not Available, DTC P164700 Is Stored In The ECM (GROUP 91, NO. 20-76)
- 91 MIB MMI: Text Messages Cannot Be Viewed Or Sent Using BLUETOOTH (GROUP 91, NO. 19-93)
- 91 MIB2 High Scale Software Update Instructions (Pr Code 7UH) (GROUP 91, NO. 19-65)
- 91 Apple CARPLAY Does Not Start After Connecting To USB With IOS 11.4.1, 12.0, Or Higher (GROUP 91, NO. 18-13)
- Cooling System (Mechanical)
- 00 Carb Executive Order Label Placement Guide For Remanufactured Parts (GROUP 00, NO. 25-06)
- 00 Fluid Sample Request From Product Support (GROUP 11, NO. 24-00)
- 19 Low Coolant Light Is On But The Coolant Level Is Within Specifications (GROUP 19, NO. 24-55)
- 19 Identifying And Mixing Factory Fill Engine Coolants (GROUP 19, NO. 23-36)
- 80 The Interior Vehicle Heating Is Insufficient And The Engine Coolant Is Discolored (GROUP 80, NO. 23-12)
- 19 Coolant Marks On The Filler Cap For The Cooling System (GROUP 19, NO. 21-22)
- 19 Coolant Level Warning Light On With Coolant Marks On The Coolant Pump - 4.0 TFSI (GROUP 19, NO. 21-17)
- 19 Water Pump/Thermostat Housing Revised Repair Procedure (GROUP 19, NO. 19-99)
- Cooling Systems
- Cruise Control Systems
- Differentials & Drive Axles
- 37 Service Info: Noises From Wheel Input Shaft/Drive Shaft (GROUP 37, NO. 25-31)
- 43 Repairs On Air Spring Strut Of Front Axle: Additional Sealing (GROUP 43, NO. 24-98)
- 39 Noises And/Or Vibrations In Tight Turns - Vehicles With QUATTRO Drive (GROUP 39, NO. 24-72)
- 40 Squeaking Noises When Steering Or Maneuvering (GROUP 40, NO. 23-51)
- Driveshaft & Universal Joints
- Electric Converters and Controllers
- Electric Motor Systems
- Electronic Steering
- Engine Control Systems
- 01 DTC U140A00 Terminal 30 Is Stored In The ECM (GROUP 01, NO. 25-62)
- 27 Noises/Vibration From Front Of Vehicle In Dynamic Mode (GROUP 27, NO. 24-84)
- 00 Professional Noise Analysis With The Vas 611 015 PICO-NVH Tool (GROUP 00, NO. 24-99)
- 00 VIN-4-Pin Reporting Program (GROUP 00, NO. 23-78)
- 01 Automatic Detection Of Unauthorized Chip Tuning (TD1 Warranty Key) (GROUP 01, NO. 23-81)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- 01 Noise From Exhaust Flaps, DTC P14AC00, P14AB00, P047500, P047700, P049F00 Are Stored In The ECM (GROUP 01, NO. 21-96)
- 21 Engine Difficult To Start, Turbocharger Is Damaged - Repair Authorization (GROUP 21, NO. 20-35)
- 37 Vehicle Lacks Power Or Will Not Move After Stop Due To Simultaneous Depressing Of The Brake And Accelerator Pedals (GROUP 37, NO. 19-87)
- 01 Mil On, DTC P209600 And/Or P209800 Stored In ECM (GROUP 01, NO. 19-96)
- 17 Oil Level Too High, Warning Light On (GROUP 17, NO. 19-96)
- 01 Engine Warning Lamp On, DTC For Oxygen Sensor After Catalytic Converter (P013E00, P014A00) (GROUP 24, NO. 16-55)
- Entertainment Systems
- 87 Control Functions In Vehicle Interior Restricted (GROUP 87, NO. 24-93)
- 91 Sound System: Speaker Rattles, Vibrations, Or Audio Interference (GROUP 91, NO. 24-84)
- 91 ASI: Apple CARPLAY Pops Up Or Takes Over Audio Without User Intervention (GROUP 91, NO. 24-68)
- 91 MMI Navigation Database Concerns (Missing Traffic Info, Incorrect Speed Limits, Missing Streets; Poi Not Listed, Etc) (GROUP 91, NO. 24-63)
- 91 MIB2 High: Lowering Volume For The Parking System Does Not Work (GROUP 91, NO. 22-88)
- 91 Radio: Noise From Fm/Am Sources While The Rear Window Heater Is Active (GROUP 91, NO. 21-86)
- 91 MIB2+: USB Socket INOP, Mechanical Or ESD Damage (GROUP 91, NO. 20-30)
- 91 Multiple Vehicle Features (Acc, NAV, DRIVESELECT, Etc.) Are Not Available, DTC P164700 Is Stored In The ECM (GROUP 91, NO. 20-76)
- 91 MIB2 High Scale Software Update Instructions (Pr Code 7UH) (GROUP 91, NO. 19-65)
- 91 Apple CARPLAY Does Not Start After Connecting To USB With IOS 11.4.1, 12.0, Or Higher (GROUP 91, NO. 18-13)
- 90 AUDI Connect Key User Entry Cannot Be Selected In MMI Menu, "Request User List Manually" Or "Please Wait" (GROUP 90, NO. 18-92)
- 91 Apple CARPLAY: No Audio When Listening To SXM, Fm, Or Am (GROUP 91, NO. 18-97)
- 91 Hd Radio Presets (GROUP 91, NO. 18-95)
- Exhaust
- Exterior Body Panels
- Exterior Lights
- 00 Service Info: Foreign Object From Car Wash (Bristle Or Similar) Trapped In Area Of Headlight (GROUP 00, NO. 25-05)
- 94 Service Info: Documenting Visual Complaints Regarding Headlights And Tail Lights (GROUP 94, NO. 25-86)
- 94 Exterior Lights Have Moisture Accumulation (GROUP 94, NO. 25-85)
- 94 Optical Concerns With Tail Lights (GROUP 94, NO. 24-82)
- 94 Headlights May Not Turn Off During Daylight Hours (GROUP 94, NO. 24-79)
- Frames, Subframes & Crossmembers
- Front Suspension
- 40 Shock Absorber Leaks: Assessment Aid (GROUP 40, NO. 25-99)
- 40 Locating Noises Coming From Suspension (GROUP 40, NO. 25-92)
- 40 Noises From Guide Link Bush (GROUP 40, NO. 25-93)
- 44 Wheel Alignment (GROUP 44, NO. 24-09)
- 40 Noises From The Front Suspension's Buffer Stops (GROUP 40, NO. 22-32)
- 40 Squeaking Noises When Steering Or Maneuvering (GROUP 40, NO. 23-51)
- Fuel System
- 01 Engine: Driving Behavior, Functional Restrictions Due To Diesel Detected In Petrol (Diesel/Gasoline Mixture) (GROUP 01, NO. 24-34)
- 00 Service Info: Tank Cannot Be Fully Filled (GROUP 00, NO. 24-90)
- 00 Fluid Sample Request From Product Support (GROUP 11, NO. 24-00)
- 10 Engine Replacement, Checking For Debris Lodged In Transferred Assemblies (GROUP 10, NO. 21-22)
- 00 Possible DRIVEABILITY Issues Due To The Use Of Winter-Blend Fuel In A Warmer Season (GROUP 00, NO. 20-37)
- 21 Engine Difficult To Start, Turbocharger Is Damaged - Repair Authorization (GROUP 21, NO. 20-35)
- 37 Vehicle Lacks Power Or Will Not Move After Stop Due To Simultaneous Depressing Of The Brake And Accelerator Pedals (GROUP 37, NO. 19-87)
- 01 Mil On, DTC P209600 And/Or P209800 Stored In ECM (GROUP 01, NO. 19-96)
- 01 Engine Sporadically Difficult To Start - 4.0TFSI (GROUP 01, NO. 19-00)
- Gauges & Instrument Panels
- 90 AUDI Pre Sense - Restricted Function Icon Is Displayed After Switching On Ignition (GROUP 90, NO. 25-74)
- 91 Parking Assistance Provides False Warnings (GROUP 94, NO. 06-03)
- 90 Scratches Or Coating On Cover Of Instrument Cluster Or Particles Inside The Housing (GROUP 90, NO. 24-87)
- 90 Outside Air Temperature Reading: General Information (GROUP 90, NO. 24-84)
- 90 Noise From The Area Around The Instrument Cluster (GROUP 90, NO. 24-83)
- 00 Service Info: Workshop Mode With AUDI Connect Vehicles (GROUP 00, NO. 23-73)
- 92 Washer Solvent Level Warning Is On (GROUP 92, NO. 23-36)
- 17 Range Display (Distance To Empty) In The On-Board Computer (GROUP 17, NO. 20-06)
- 90 AUDI Connect Key User Entry Cannot Be Selected In MMI Menu, "Request User List Manually" Or "Please Wait" (GROUP 90, NO. 18-92)
- Headlights
- 00 Service Info: Foreign Object From Car Wash (Bristle Or Similar) Trapped In Area Of Headlight (GROUP 00, NO. 25-05)
- 94 Service Info: Documenting Visual Complaints Regarding Headlights And Tail Lights (GROUP 94, NO. 25-86)
- 94 Exterior Lights Have Moisture Accumulation (GROUP 94, NO. 25-85)
- 94 Headlights May Not Turn Off During Daylight Hours (GROUP 94, NO. 24-79)
- 94 Visual Concerns With Headlight Lens (GROUP 94, NO. 24-72)
- 94 Headlights May Not Turn Off During Daylight Hours (GROUP 94, NO. 21-39)
- Horns
- HVAC Control Systems
- 87 GFF Test Plan Required For A/C Compressor Replacements Regardless Of Concern (GROUP 87, NO. 25-01)
- 87 Air Conditioning System: Cooling Output Insufficient, Leak On Air Conditioning System Evaporator (GROUP 87, NO. 25-98)
- 00 Service Info: Workshop Mode With AUDI Connect Vehicles (GROUP 00, NO. 23-73)
- 80 The Interior Vehicle Heating Is Insufficient And The Engine Coolant Is Discolored (GROUP 80, NO. 23-12)
- Identification
- Ignition Switch/Steering Lock
- Infotainment
- 93 PSS: Warning Message: "Electrical System: Fault. Please Contact Workshop" (E-Tron Gt) (GROUP 91, NO. 25-40)
- 91 ASI: Apple CARPLAY Pops Up Or Takes Over Audio Without User Intervention (GROUP 91, NO. 24-68)
- 91 MMI Navigation Database Concerns (Missing Traffic Info, Incorrect Speed Limits, Missing Streets; Poi Not Listed, Etc) (GROUP 91, NO. 24-63)
- 91 Navigation, BLUETOOTH, Smartphone Interface, And Voice Recognition Is Not Available (GROUP 91, NO. 23-33)
- 91 Navigation: Complaints About Route Guidance (GROUP 91, NO. 23-26)
- 91 MIB: MMI Navigation Map Update "How-To Guide" - Potential Customer Concerns (GROUP 91, NO. 23-83)
- 91 Google Earth Is Greyed Out Or Does Not Function In The MMI With A Warning, "The Subscription Has Expired" (GROUP 91, NO. 21-07)
- 91 Multiple Vehicle Features (Acc, NAV, DRIVESELECT, Etc.) Are Not Available, DTC P164700 Is Stored In The ECM (GROUP 91, NO. 20-76)
- 91 MIB2 High Scale Software Update Instructions (Pr Code 7UH) (GROUP 91, NO. 19-65)
- 91 Apple CARPLAY Does Not Start After Connecting To USB With IOS 11.4.1, 12.0, Or Higher (GROUP 91, NO. 18-13)
- 91 AUDI Connect: Google STREETVIEW Does Not Function In The Navigation Map Screen (GROUP 91, NO. 17-66)
- Interior/Exterior Trim
- 60 Service Info: Accounting Instructions For Noises From Headliner/Noises From Panoramic Sunroof (GROUP 60, NO. 25-79)
- 74 Damage Assessment Guidelines For Textile Seat Covers (GROUP 74, NO. 25-28)
- 66 Exterior Rubber Trim Spotted (GROUP 66, NO. 25-16)
- 66 Optical Defects, Scratches, And Chrome Peeling (GROUP 66, NO. 24-15)
- 66 Exterior Black Optic Trim Is Discolored (GROUP 66, NO. 24-12)
- 66 License Plate Mounting Bracket Threaded Inserts Are Stripped (GROUP 66, NO. 23-04)
- 53 Cables Visible In Passenger Compartment (GROUP 53, NO. 20-04)
- Lubrication System
- 01 Engine: Increased Engine Oil Consumption >0.5 LTR./1000 Km - Oil Consumption Measurement (GROUP 01, NO. 24-30)
- 00 Fluid Sample Request From Product Support (GROUP 11, NO. 24-00)
- 17 Oil Level Too High, Warning Light On (GROUP 17, NO. 19-96)
- 17 Engine Oils That Meet AUDI Oil Quality Standards 501 01, 502 00, 504 00, 505 00, 505 01, 507 00, 508 00, And 509 00 (GROUP 17, NO. 18-91)
- Mechanical
- 15 Engine Does Not Run Smoothly At Idling Speed - All TFSI Engines (GROUP 15, NO. 25-55)
- 10 Engine Replacement, Checking For Debris Lodged In Transferred Assemblies (GROUP 10, NO. 21-22)
- 17 Oil Level Too High, Warning Light On (GROUP 17, NO. 19-96)
- 17 Engine Oils That Meet AUDI Oil Quality Standards 501 01, 502 00, 504 00, 505 00, 505 01, 507 00, 508 00, And 509 00 (GROUP 17, NO. 18-91)
- Mechanical - Hydraulic
- 45 Abs/ESC Speed Sensor - Implausible Signal (GROUP 45, NO. 24-46)
- 45 Brakes Rubbing, General Approach - All AUDI Vehicles (GROUP 45, NO. 24-49)
- 46 AUDI Frequency Analysis (GROUP 46, NO. 24-57)
- 46 Zirconium Inserts In Brake Piston (Ceramic Brakes Only) (GROUP 46, NO. 24-59)
- 46 Brake Pulsation Diagnostic Guidelines (GROUP 46, NO. 99-01)
- 46 Brakes Creak At An Almost Standstill (GROUP 46, NO. 23-52)
- 46 Corrosion On Friction Surface Of Steel Brake Disc - All Models (GROUP 46, NO. 23-49)
- 46 Brake Noise Analysis And Handling (GROUP 46, NO. 23-48)
- 46 Noises When Braking - All Models (GROUP 46, NO. 23-43)
- Memory Modules
- Passive Restraints
- Procedures
- 00 Carb Executive Order Label Placement Guide For Remanufactured Parts (GROUP 00, NO. 25-06)
- 46 AUDI Frequency Analysis (GROUP 46, NO. 24-57)
- 00 Additional Reporting Requirements - Safety Related Inquiry (GROUP 00, NO. 23-74)
- 91 MIB2 Standard Software Update Instructions (Pr Code I8E) (GROUP 91, NO. 19-29)
- Rear Suspension
- Restraints Control Systems
- Seats
- Starter
- 24 Engine: Start/Stop System - System Fault Shown And Start/Stop System Not Working; Mileage Below 50 Km/32 Miles (GROUP 24, NO. 24-63)
- 27 48V Reference: Charging 48V Battery With 12V Charger DTC P0A7D00/P0B2900 (GROUP 27, NO. 24-71)
- 27 Battery: 12V Lead-Acid/AGM Battery Maintenance Requirements (GROUP 27, NO. 23-53)
- Steering Column
- 44 Wheel Alignment (GROUP 44, NO. 24-09)
- 48 Steering Wheel Visual Damage, All Vehicles (GROUP 48, NO. 24-72)
- 94 Noise When Steering Vehicle (GROUP 94, NO. 24-81)
- 48 Identification Of Noises In The Dynamic Steering (GROUP 48, NO. 24-64)
- 46 Brake Pulsation Diagnostic Guidelines (GROUP 46, NO. 99-01)
- 44 Steering Wheel Shimmy, Vibration, And/Or Oscillation (GROUP 44, NO. 23-97)
- Steering Control Systems
- 48 Steering Wheel Heater Is Not Working, DTC B145504 Is Stored In The Steering Column Control Module (GROUP 48, NO. 22-23)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- 48 Steering Warning Lamp Is On, DTC B200FF0 Is Stored In The Rear Axle Steering Control Module (GROUP 48, NO. 21-98)
- Sun Roof/T-Top/Convertible Top
- Suspension Control Systems
- 40 Shock Absorber Leaks: Assessment Aid (GROUP 40, NO. 25-99)
- 43 Noise Search On Vehicles With The DRC System (Dynamic Ride Control) (GROUP 43, NO. 24-96)
- 43 Dynamic Ride Control (DRC): Assessment Of Leaks (GROUP 43, NO. 22-57)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- System
- 00 Carb Executive Order Label Placement Guide For Remanufactured Parts (GROUP 00, NO. 25-06)
- 01 Automatic Detection Of Unauthorized Chip Tuning (TD1 Warranty Key) (GROUP 01, NO. 23-81)
- 00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)
- 10 Engine Replacement, Checking For Debris Lodged In Transferred Assemblies (GROUP 10, NO. 21-22)
- 37 Vehicle Lacks Power Or Will Not Move After Stop Due To Simultaneous Depressing Of The Brake And Accelerator Pedals (GROUP 37, NO. 19-87)
- 01 Mil On, DTC P209600 And/Or P209800 Stored In ECM (GROUP 01, NO. 19-96)
- 01 Engine Sporadically Difficult To Start - 4.0TFSI (GROUP 01, NO. 19-00)
- 01 Engine Warning Lamp On, DTC For Oxygen Sensor After Catalytic Converter (P013E00, P014A00) (GROUP 24, NO. 16-55)
- Transmission
- Transmission Control Systems
- TSB
- Warning Systems
- Wheel Alignment
- Wheels & Tire System
- 44 Vibrations And Rotational Steering Wheel Vibrations (GROUP 44, NO. 24-08)
- 43 Noise Search On Vehicles With The DRC System (Dynamic Ride Control) (GROUP 43, NO. 24-96)
- 44 Wheel/Tire Imbalance (GROUP 44, NO. 24-05)
- 44 Steering Wheel Shimmy, Vibration, And/Or Oscillation (GROUP 44, NO. 23-97)
- 44 Collapsible Spare Wheel Does Not Inflate Fully Using The Compressor From The Vehicle Tool Kit (GROUP 44, NO. 23-02)
- Window Motors & Regulators
- 64 Exterior Glass Cleaning (GROUP 64, NO. 24-02)
- 64 Frameless Window Auto-Drop Function Inoperative In Freezing Weather (GROUP 64, NO. 24-97)
- 64 Faint Images Appear On The Windshield J D.H (GROUP 64, NO. 23-88)
- 91 Radio: Noise From Fm/Am Sources While The Rear Window Heater Is Active (GROUP 91, NO. 21-86)
- 51 Vehicle Inspection, Protection Removal, And Detailing (GROUP 51, NO. 20-13)
- Wiper/Washer Systems