Mercedes-Benz · SmartU1337 codes

Mercedes-Benz · Smart — fault codes starting with U1

337 fault codes starting with U1 on Mercedes-Benz · Smart vehicles, with descriptions: U1000, U1001, U1002 and more. Look up a code, read what it means.

Fault codes
337
Block
U1
Make group
Mercedes-Benz · Smart
Source language
English

The 337 Mercedes-Benz · Smart fault codes that start with U1, with descriptions.

U10

CodeDescription
U1000Control Unit "Satellite Digital Audio Radio" Has a Circuit Fault; Control Unit A2 (Radio) Is Circuit Fault
U1001HW-Watchdog Executed; LIN Message From Component "B95 (Battery Sensor)" Circuit Fault
U1002Not Relevant!
U1003Not Relevant!; Wake Up-Line Circuit Fault
U1004Component A90/2 (CAN TV Combination Tuner (Analog/Digital)) Has Excess Temperature; FOT - Critical Temperature Exceeded
U1005The Control Unit Is Overheated
U1006No CAN Message From Control Unit N2/7 (Restraint Systems Control Unit)
U1008LIN Bus 1 Has a Circuit Fault
U1010Low Voltage; Not Relevant!
U1011High Voltage; Not Relevant!
U1012Low Voltage in Diag.-Mode; Not Relevant!
U1013High Voltage in Diag.-Mode; The MOST Transmitter and Receiver Unit Has Overtemperature
U1014The Supply Voltage Is Too High or Voltage Too Low
U1015The MOST Network Was Shut Down Due to Insufficient Battery Voltage
U1016MOST Communication Has a Circuit Fault
U1017MOST Communication Has a Circuit Fault
U1018MOST Communication Has a Circuit Fault
U1019MOST Communication Has a Circuit Fault
U1020MOST Communication Has a Circuit Fault
U1021MOST Communication Has a Circuit Fault
U1022MOST Communication Has a Circuit Fault; The Video Cable From Control Unit A40/3 (COMAND Control Unit) to Control Unit N66/2 (Backup Camera Control Unit) Is Not Inserted
U1023CAN Communication with Control Unit N66/2 (Backup Camera Control Unit) Is Circuit Fault; MOST Communication Has a Circuit Fault
U1024MOST Communication Has a Circuit Fault
U1026Telematics CAN Bus OFF Circuit Fault
U1027Chassis CAN Bus OFF Circuit Fault
U1030Failure of Interior CAN Bus; Not Relevant!
U1031No CAN Message From Control Unit EZS; Not Relevant!
U1032Not Relevant!; This Circuit Fault
U1033This Circuit Fault
U1034This Circuit Fault
U1035This Circuit Fault
U1073Not Relevant!
U1090Overvoltage or Undervoltage in Voltage Supply (Tml.30)

U11

CodeDescription
U1100An Unsupported Device Was Detected at the USB Interface; MOST Master Reports Open Ring
U1101MOST Component at Position 1 Reports Open Ring; Not Relevant!
U1102Authorization of the Telematics Service "Breakdown Assistance" Is Not Possible Because There Is No Mobile Telephone Network; MOST Component at Position 2 Reports Open Ring
U1103An Unsupported Device Was Detected at the Serial Interface; MOST Component at Position 3 Reports Open Ring
U1104A Timeout Occurred During Authorization; MOST Component at Position 4 Reports Open Ring
U1105Breakdown Assistance; MOST Component at Position 5 Reports Open Ring
U1106MOST Component at Position 6 Reports Open Ring; Ring Break - Segment Before Pos. 6 Is Damaged
U1107Ring Break - Segment Before Pos. 7 Is Damaged
U1108No or Configuration Mismatch; Ring Break - Segment Before Pos. 8 Is Damaged
U1109Ring Break - Segment Before Pos. 9 Is Damaged
U110ARing Break - Segment Before Pos. 10 Is Damaged
U110BNo CAN Message Was Received From Electronic Selector Module Control Unit (N15/5)
U110CRing Break - Segment Before Pos. 12 Is Damaged
U110DRing Break - Segment Before Pos. 13 Is Damaged
U110ERing Break - Segment Before Pos. 14 Is Damaged
U110FRing Break - Segment Before Pos. 15 Is Damaged
U1110The Connecting Cable Is Not Connected; The Vehicle Speed Signal Was Expected Message Missing
U1112No or Configuration Mismatch
U1113The Terminal 15 Signal on the CAN Bus Is Missing or Is Circuit Fault
U1116Fatal MOST-transmission Circuit Fault; No MOST Data Transfer Possible, Position Cannot Be Located
U1117Rated - Current Configuration of the MOST-optical Ring Is Different
U1118Message "Variant Coding" From Control Unit "Engine Control System" Is Not Available on the CAN Bus
U1119Not Relevant!
U1128Not Relevant!
U1131At Least One Wheel Sensor Is Circuit Fault; Component N88 (TPM [RDK] Control Unit) Has Not Recognized All Wheel Electronics
U1135The Wake-up Line Has Circuit Short to Ground
U1136The Wake-up Line Has Short Circuit to Positive
U1137Communication on the MOST Bus Was Interrupted During Diagnosis
U1138The Fan Is Running Even Though It Is Switched Off
U1139Communication with Control Unit "N80 (Steering Column Tube Module Control Unit)" Has a Circuit Fault; Component Fan Is Faulty or the Lead Has Circuit Open
U113ANo CAN Message Was Received From Steering Column Module Control Unit (N80)
U1140CAN Bus Circuit Fault
U1141CAN Bus - No CAN Message From Control Unit A1 (Instrument Cluster); CAN Controller: CAN Bus OFF ( Telematic CAN Bus )
U1142CAN Bus - No CAN Message From Control Unit N73 (EIS [EZS] Control Unit); Fault in CAN Communication with Control Unit N73 (EIS [EZS] Control Unit)
U1144CAN Bus - No CAN Message From Control Unit N73 (EIS [EZS] Control Unit); Fault in CAN Communication with Control Unit N93 (Central Gateway Control Unit)
U1146Fault in CAN Communication with Control Unit Central Gateway (CGW)
U1147Fault in CAN Communication with Control Unit DS-LF
U1148Fault in CAN Communication with Control Unit DS-RF
U1151Fault in CAN Communication with Control Unit Central Gateway (CGW)
U1152Fault in CAN Communication with Control Module ABR or Central Gateway (CGW)
U1153Fault in CAN Communication with Control Module ABR or Central Gateway (CGW)
U1154Fault in CAN Communication with Control Unit ICM
U1155Fault in CAN Communication with Control Module ABR or Central Gateway (CGW)
U1156Communication with Electronic Toll Collection System (ETC) Has a Circuit Fault; Fault in CAN Communication with Control Unit Central Gateway (CGW)
U1157Communication with the Gyro Sensor Has a Circuit Fault; Fault in CAN Communication with Control Unit COU [ZBE]
U1158Fault in CAN Communication with Control Unit ZAN
U1162Communication with Tire Pressure Sensor 1 Has a Circuit Fault; Component A69/1 (Left Front RDK Wheel Sensor) Is Circuit Fault
U1163Communication with Tire Pressure Sensor 2 Has a Circuit Fault; Component A69/2 (Right Front RDK Wheel Sensor) Is Circuit Fault
U1164Communication with Tire Pressure Sensor 3 Has a Circuit Fault; Component A69/4 (Left Rear RDK Wheel Sensor) Is Circuit Fault
U1165Communication with Tire Pressure Sensor 4 Has a Circuit Fault; Component A69/3 (Right Rear RDK Wheel Sensor) Is Circuit Fault
U1170Not Relevant!
U1171The MOST Ring Is Unstable
U1172Not Relevant!; The MOST Ring Is Interrupted or Instable
U1173Not Relevant!
U1175Signal "Status of Circuit 15" Was Expected Message Missing
U1177Communication with Mobile Phone Cradle Has a Circuit Fault
U1178Communication with the Mobile Phone Has a Circuit Fault
U1180The Display Screen Is Circuit Fault
U1181The Background Illumination of Control Unit Is Circuit Fault
U1184Communication with the Bluetooth Module Has a Circuit Fault
U1185Communication with the Audio/COMAND Operating Unit Has a Circuit Fault
U118CCommunication with the Left Sensor for Function "Active Engine Hood" Has a Circuit Fault
U118DCommunication with the Right Sensor for Function "Active Engine Hood" Has a Circuit Fault
U118ECommunication with the Center Sensor for Function "Active Engine Hood" Has a Circuit Fault

U12

CodeDescription
U1200At Least One Button Is Sticking or Was Activated for Longer Than 30 Seconds; Sticking Key
U1201Front Flap Up Switch Not Detected; Not Relevant!
U1202Authorization of the Telematics Service "MB Info" Is Not Possible Because There Is No Mobile Telephone Network; Front Flap Down Switch Not Detected
U1203Component Hard Disk Is Not Operational; HU High Temperature
U1204A Timeout Occurred During Authorization; Fond-Display (BR211) / AVC (BR240) - CAN Circuit Fault
U1205Component Hard Disk in Module A40/3 (COMAND Control Unit) Is Circuit Fault
U1206Not Relevant!; The Internal Hard Disk Has a Circuit Fault
U1208No Portable Recognized; The Navigation Data on the DVD Cannot Be Read
U1209The Navigation Data Cannot Be Transferred to the Internal Hard Disk
U1210The Navigation Data Cannot Be Transferred to the Internal Hard Disk. the Hard Disk Is Full
U1211Update of Navigation Data Aborted
U1212Update of Navigation Data Aborted By User
U1214The COMAND Software Is Not Compatible with the Navigation Data on the DVD
U1215Update of Navigation Data Failed
U1216The Navigation Data on the Hard Disk Are Not Compatible with the New COMAND Software
U1217The License Key for Navigation Data Was Entered Incorrectly
U1218Map Data on Navigation Update DVD Circuit Fault
U1219The Navigation Data on the Hard Disk Are Circuit Fault
U1240CD Drive - Excess Temperature; CD/DVD Drive : CD/DVD Drive Is Too Hot
U1241CD Fault: CD Cannot Be Ejected; CD/DVD Eject Circuit Fault
U1242CD/DVD Drive or Disc Circuit Fault; N87/1 (Radio/Radio with Navigation) - Error While Reading the CD
U1243CD-error - TOC-data Can Not Be Read; CD/DVD Drive : the CD/DVD Drive Is Too Cold
U1250MD Loading Circuit Fault
U1251MD Eject Circuit Fault
U1252MD Drive or Disc Circuit Fault; Tape Signal Stuck
U1260N87/1 (Radio/Radio with Navigation) - External Component Missing; No CD Changer Connected

U13

CodeDescription
U1300Not Relevant!
U1301Not Relevant!
U1302The Cable to the GPS Antenna Has a Short Circuit
U1303The Cable to the GPS Antenna Has an Circuit Open
U1304A Timeout Occurred During Authorization
U1308Communication with Mobile Phone Cradle Has a Circuit Fault; RS422 Communication Circuit Fault
U1309Communication with the Bluetooth Module Has a Circuit Fault; Invalid Sensor Data Via RS422
U130ANot Relevant!; There Is an Internal Circuit Fault

U14

CodeDescription
U1400Component A2/42 (TV Tuner (CAN)) Has Excess Temperature; Control Unit A34/15 (UHI Portable CTEL Holder (Universal Handy Interface)) Is Circuit Fault
U1401Communication Circuit Fault; Control Unit A2/42 (TV Tuner (CAN)) Is Circuit Fault
U1402Authorization of the Telematics Service "Stolen Vehicle Tracking" Is Not Possible Because There Is No Mobile Telephone Network; CAN Bus Circuit Fault
U1403The Microphone or Speaker Line at Component A34/15 (UHI Portable CTEL Holder (Universal Handy Interface)) Has a Short or Circuit Open; There Is a Short Circuit in the Line of TV Antenna 1. ( Ignore This / Fault
U1404A Timeout Occurred During Authorization; The Engine Torque Statically Specified By the Engine Control System Is Not Available on the CAN Bus
U1405The Minimum Engine Torque of the Engine Control System Is Not Available on the CAN Bus; The Minimum Engine Torque Sent From the Engine Control Unit Via the CAN Bus Is Signal Implausible
U1406The Maximum Engine Torque of the Engine Control System Is Not Available on the CAN Bus; The Maximum Engine Torque Sent From the Engine Control Unit Via the CAN Bus Is Signal Implausible
U1407The Engine Torque Specified for the Traction System and Transmitted By the Engine Control System Is Not Available on the CAN Bus; The Torque Specification Transmitted By Control Unit N3/10 (ME-SFI [ME] Control Unit) Over the CAN Bus Is Signal Implausible
U1408The Stop Lamp Switch Signal From the Traction System Is Not Available on the CAN Bus
U1409The Left Front Wheel Speed Signal From the Traction System Is Not Available On the CAN Bus
U140AThe Right Front Wheel Speed Signal From the Traction System Is Not Available On the CAN Bus
U140BThe Left Rear Wheel Speed Signal From the Traction System Is Not Available On the CAN Bus
U140CThe Right Rear Wheel Speed Signal From the Traction System Is Not Available On the CAN Bus
U140FThe Message "Variant Coding" From the Engine Control System Is Invalid; The Variant Code Transmitted By Control Unit N3/10 (ME-SFI [ME] Control Unit) Over the CAN Bus Is Signal Implausible
U1410Not Relevant!
U1414Implausible Signals From Component Terminal 58d
U141DImplausible Data Were Received From Control Unit "Door"
U1420CAN Communication with Control Unit "N80 (Steering Column Tube Module Control Unit)" Has a Circuit Fault
U1425Not Relevant!
U1427Implausible data were received from the control unit
U144FMinimum fuel level REACHED

U15

CodeDescription
U1500Microphone 1 Has Circuit Short to Ground; Not Relevant!
U1501Microphone 1 Has Short Circuit to Positive; No Audio Signal Is Being Received By Control Module AVC
U1502Discontinuity in Line to Microphone 1; Microphone 1 Has an Circuit Open
U1503LIN Bus Circuit Fault; Microphone 2 Has Circuit Short to Ground
U1504Microphone 2 Has Short Circuit to Positive; The CAN Signals Sent From Control Unit N80 (Steering Column Module) Are Incomplete
U1505Discontinuity in Line to Microphone 2; Microphone 2 Has an Circuit Open
U1506The CAN Signals Sent From Control Unit N47 (Traction Systems Control Module) Are Incomplete
U1507Not Relevant!; The CAN Signals Sent From Control Unit N3/10 (ME-SFI [ME] Control Unit) Are Incomplete
U1508CAN Communication with Component "N15/5 (Electronic Selector Lever Module Control Unit)" or "A80" Has a Circuit Fault; The CAN Signals Sent From Control Unit N15/5 (Electronic Selector Lever Module Control Unit) Are Incomplete
U1509The CAN Signals Sent From Control Unit "Engine Control System" Are Incomplete
U150ANot Relevant!
U1555Not Relevant!

U16

CodeDescription
U1600Control Unit Programming Must Be Performed Again; The Control Unit Software Is Circuit Fault
U1601The Control Unit Software Is Circuit Fault; Control Unit N2/7 (Restraint Systems Control Unit) Is Circuit Fault
U1602Component "S93/6s2 (Breakdown Assistance Button)" Has an Circuit Open; The Control Unit Software Is Missing or Circuit Fault
U1603Component "S93/6s2 (Breakdown Assistance Button)" Is Signal Stuck; Not Relevant!
U1604Component "S93/6s1 (MB-Info Button)" Has an Circuit Open; Line to Pushbutton Switch MB Info Is Interrupted
U1605Component "S93/6s1 (MB-Info Button)" Is Signal Stuck; Not Relevant!
U1606Control Unit Software "DATA" Missing or Is Corrupt; Data Record 1 of the Software Module Is Missing or Circuit Fault
U1607Not Relevant!
U1608Not Relevant!
U1609Not Relevant!
U160ANot Relevant!
U160BBoot Software 1 Is Missing or Circuit Fault; N70 (OCP [DBE] Control Unit) - the Control Unit Software Is Circuit Fault
U160CNot Relevant!
U160DNot Relevant!
U160ENot Relevant!; The Control Unit Has an Internal Hardware Circuit Fault
U160FThere Is an Internal Circuit Fault
U1610GPS Positioning Is Not Assured; One or More Signals Sent From Control Unit "N73 (Electronic Ignition Lock Control Unit)" Via the CAN Bus Is Signal Implausible
U1611The GPS Antenna Has an Circuit Open
U1612The GPS Antenna Has a Circuit Short to Ground
U1613GPS Signal Could Not Be Received Over the Maximum Permissible Driving Distance
U1614An Incompatibility Between GPS Position and the Position Determined Through the Wheel Sensors Has Occurred; The GPS Signal Is Signal Implausible
U1616Component GPS Antenna Has Short Circuit or No Connection
U1620The Check Signal From Control Unit "N2/10 (Supplemental Restraint System Control Unit)" Could Not Be Received in Time; The Life Signal of Control Module Airbag Cannot Be Received in Time During System Start
U1621The Check Signal From Control Unit "N2/10 (Supplemental Restraint System Control Unit)" Is Missing; The Life Signal of the Airbag Control Unit Cannot Be Received
U1622Airbag Control Module : Crash Signal Implausible; The Check Signal From Control Unit "N2/10 (Supplemental Restraint System Control Unit)" Is Signal Implausible
U1630Component "Main Antenna "TELEAID Has an Circuit Open; Component CTEL Antenna Is Faulty or the Lead Has Circuit Open
U1631Component "Main Antenna "TELEAID Has a Short Circuit; Component CTEL Antenna or the Lead Has Short Circuit
U1632Component "Backup Antenna "TELEAID Has an Circuit Open; Component TELE AID Spare Antenna Is Faulty or the Lead Has Circuit Open
U1633Component "Backup Antenna "TELEAID Has a Short Circuit; Component TELE AID Spare Antenna or the Lead Has Short Circuit
U1634CTEL Antenna and TELE AID Spare Antenna Are Wrongly Connected; The Connectors of Components "Main Antenna "TELEAID and "Backup Antenna "TELEAID Are Swapped
U1635Components "Main Antenna "TELEAID and "Backup Antenna "TELEAID Are Circuit Fault
U1640CAN Bus to Control Unit Central Gateway (CGW) (CAN D) : CAN Reception Timeout of Data of Control Unit Central Gateway (CGW); No CAN Message Was Received From Control Unit "Central Gateway"
U1641CAN Bus OFF Circuit Fault; CAN Bus to Control Unit Central Gateway (CGW) (CAN D) : CAN Bus OFF
U1643CAN Bus to Control Unit Central Gateway (CGW) (CAN D) : Communication Circuit Fault; No CAN Message Was Received From Control Unit "System Diagnosis"
U1644Teleaid Switch Block Circuit Fault
U1645CAN Bus to Control Unit Central Gateway (CGW) (CAN D) : No Vehicle Speed Signal
U1647CAN Bus to Control Unit Central Gateway (CGW) (CAN D) : No Signal "Reverse Gear"
U1652Not Relevant!
U1662The Control Unit Has an Internal Hardware Circuit Fault
U1664Fault During Charging of Portable CTEL No Portable Recognized Not Relevant!
U1665Portable NOT CONNECTED Not Relevant!
U1666Faulty Connection to Component Portable Cellular Telephone Not Relevant!
U1669The Diagnostic CAN Network Management Is Unstable
U1670Microphone 1 Has an Circuit Open; No Connection to Component Handsfree System Microphone
U1672Handsfree System Microphone: Short Circuit to Ground; Microphone 1 Has a Circuit Short to Ground
U1674Not Relevant!
U1676Not Relevant!
U1681Component "H4/27 (Center Instrument Panel Speaker)" Has an Circuit Open
U1683Component "H4/27 (Center Instrument Panel Speaker)" Has a Circuit Short to Ground
U1690CAN Signal Vehicle Speed Faulty (RIZ): the Signal From Control Module Central Gateway (CGW) Is Signal Implausible; The Wheel Speed Signals Were Expected Message Missing
U1691An Implausible Wheel Speed Signal Was Received; Large Deviation Determined Between Wheel Speed Signal and Speed Computed Based on GPS Signal
U16A0Communication with the Bluetooth Module Is Circuit Fault; Component Bluetooth Module in Module COMAND Is Circuit Fault
U16A1The Bluetooth Antenna Has a Circuit Short to Ground; Component A34/11 (Bluetooth Module) Is Circuit Fault
U16A2Component A2/91 (Bluetooth Antenna) Has a Short Circuit to Positive or an / Open
U16A5Software for Bluetooth Handset in Rear Incompatible with COMAND Software
U16A8No Connection to Component Bluetooth Handheld Receiver Tray
U16B3Too Many Failed Attempts to Authorize the Telematics Service "TELEAID": the Connection of the Service Provider Is Busy or Not Connecting
U16B4Authorization : Telephone Network Is Not Available; Authorization of the Telematics Service "TELEAID" Is Not Possible Because There Is No Mobile Telephone Network
U16B5A Timeout Occurred During Authorization; Authorization : the Service Provider"s Line Is Busy or You Cannot Be Connected
U16C0No SIM Present; Not Relevant!
U16C1Not Relevant!; The SIM Card Has an Electrical Defect
U16C2Not Relevant!; SIM Card Is Inhibited. Unlock SIM Card By Entering the Eight-digit Unlocking
U16C3No PIN Entered; Not Relevant!
U16C6SIM Card Is Inhibited. Have SIM Card Unblocked By the Telematic Services Provider
U16D0Telephone Hand Set Circuit Fault
U16D1Control Unit Must Be Programmed; Telephone Hand Set : No Connection to Component Telephone Hand Set
U16D2Telephone Hand Set Circuit Fault
U16D6Control Unit Must Be Programmed
U16D7Control Unit Must Be Programmed
U16F1Not Relevant!

U17

CodeDescription
U1700CD Load or Eject Error on CD Drive 1; DVD Playback Intermittently Malfunctions. ( Software Error )
U1701CD Load or Eject Error on CD Drive 2; DVD Playback Intermittently Malfunctions. ( Hardware Circuit Fault
U1702CD Load or Eject Error on CD Drive 3; DVD Playback Intermittently Malfunctions. (Audiodecode-Error)
U1703At Least One of the LEDs of the Tweeters Is Defective or One of the Connecting Cables Has an Circuit Open; CD Load or Eject Error on CD Drive 4
U1704CD Load or Eject Error on CD Drive 5
U1705CD Load or Eject Error on CD Drive 6
U1706The CD Changer Signals Excess Temperature
U1707Error While Reading the CD
U1710Not Relevant!; Short Circuit Detected at Amplifier Group 1
U1711Not Relevant!; Short Circuit Detected at Amplifier Group 2
U1712Component "H4/1h1 (Left Front Door Tweeter)" or Its Electrical Line Has a Short Circuit to Ground or an / Open; Short Circuit Detected at Amplifier Group 3
U1713Component "H4/2h1 (Right Front Door Tweeter)" or Its Electrical Line Has a Short Circuit to Ground or an / Open; Short Circuit Detected at Amplifier Group 4
U1714Not Relevant!; Short Circuit Detected at Amplifier Group 5
U1715Not Relevant!
U1716Component "H4/54 (Left Rear Surround Speaker)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U1717Component "H4/57 (Right Rear Surround Speaker)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U1718Component "H4/27 (Center Instrument Panel Speaker)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U1719Component "H4/29 (Woofer)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U171AComponent "H4/1h2 (Left Front Door Woofer)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U171BComponent "H4/2h2 (Right Front Door Woofer)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U171CComponent "H4/1h2 (Left Front Door Woofer)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U171DComponent "H4/2h2 (Right Front Door Woofer)" or Its Electrical Line Has a Short Circuit to Ground or an / Open
U1720The Parameterization Data Valid for This Vehicle Are Not Present
U1721Control Unit "Main Amplifier" Was Switched Off Due to Overtemperature
U1722Due to Overtemperature, the Output of Control Unit "Sound System" Was Reduced. ( Component "Power Chip" Has Undertemperature. )
U1723A Short Circuit or an / Open
U1724A Short Circuit or an / Open
U1725A Short Circuit or an / Open
U1726A Short Circuit or an / Open
U1727A Short Circuit or an / Open
U1728Bass Amplifier : the Watchdog Function Has Detected an Internal Software Circuit Fault
U1729Bass Amplifier : the Power Supply Is Voltage Too Low
U172ABass Amplifier : the Power Supply Is Voltage Too High
U172BControl Unit "Bass Amplifier" Was Switched Off Due to Overtemperature
U172CComponent "Bass Amplifier" Has Undertemperature
U172DControl Unit "Bass Amplifier" Has a Circuit Fault
U172EThe Output Stage of Control Unit "Bass Amplifier" Is Overloaded
U172FCommunication Between Control Units "Main Amplifier" and "Bass Amplifier" Is Not Possible or the Control Units Are Not Compatible with Each Other

U18

CodeDescription
U1800Component H4/27 (Cockpit Center Speaker (Center Fill)) Is Faulty or the Lead Has Circuit Open; Not Relevant!
U1801The Digital Radio Receiver Has Overtemperature. the Satellite Radio Receiver Has Overtemperature
U1802The TV Tuner Has Overtemperature
U1803Component H4/2 (Right Front Door Speaker) Is Faulty or the Lead Has Circuit Open; The TV Tuner Has Overtemperature
U1804The External Audio Amplifier Has Overtemperature. (Bang & Olufsen)
U1806Not Relevant!
U1807Component H4/29 (Subwoofer) Is Faulty or the Lead Has Circuit Open
U1810Component B25/6 (Sound Amplifier Microphone) Is Faulty or the Lead Has Circuit Open
U1831Not Relevant!
U1832Not Relevant!
U1834Processor "DA610" Could Not Be Started. Component DA610 Is Installed Inside Control Unit Tuner Sound
U1836Memory Overflow in Control Module Tuner Sound
U1850An Unknown MOST Component Is Installed

U19

CodeDescription
U1900Button "Button "Left Temperature Setting" Is Circuit Fault; Not Relevant!
U1901Button "Button "Left Temperature Setting" Is Circuit Fault; Not Relevant!
U1902Button "Left Air Distribution" Is Circuit Fault
U1903Button "Left Air Distribution" Is Circuit Fault
U1904A Timeout Occurred During Authorization; Button "Special Functions" Is Circuit Fault
U1905Button "Special Functions" Is Circuit Fault
U1906Button "Blower" Is Circuit Fault
U1907Button "Blower" Is Circuit Fault
U1908Button "Right Air Distribution" Is Circuit Fault
U1909Button "Right Air Distribution" Is Circuit Fault
U1910Button A40/9s11 (Turn/Push Control) Is Circuit Fault
U1911Button "Button "Right Temperature Setting" Is Circuit Fault
U1921CAN Bus Signal "Switch On" Not Available From Control Unit Automatic Air Conditioning Display of Control Unit Rear a/C Operating Unit Remains Black
U1922Signal "IC_A1" Sent From Control Unit Instrument Cluster Via the CAN Bus Was Expected Message Missing
U1923Signal "HVAC_A4" Sent From Control Unit Automatic Air Conditioning Via the CAN Bus Was Expected Message Missing
U1940CAN Controller: CAN Bus OFF
U1949CAN Controller: CAN Bus OFF
U1950Fault in CAN Communication with Control Unit A1 (Instrument Cluster)
U1951Fault in CAN Communication with Control Unit N73 (Electronic Ignition Lock Control Unit)
U1953Fault in CAN Communication with Control Unit A40/3 (COMAND Control Unit)
U1954Fault in CAN Communication with Control Unit N73 (Electronic Ignition Lock Control Unit); Signal "EIS_A4" Sent From Control Unit EIS Electronic Ignition Switch Via the CAN Bus Was Expected Message Missing
U1956Fault in CAN Communication with Control Unit N72/1 (Upper Control Panel Control Unit); Signal "CTRL_U_A2" Sent From Control Unit Central Operating Unit Via the CAN Bus Was Expected Message Missing
U1958Fault in CAN Communication with Control Unit N70 (Overhead Control Panel Control Unit); Signal "BODY_R1" Sent From Control Unit Central Gateway (CGW) Via the CAN Bus Was Expected Message Missing

U1A

CodeDescription
U1A00Not Relevant!
U1A01Not Relevant!
U1A04A Timeout Occurred During Authorization
U1A08Not Relevant!

U1B

CodeDescription
U1B00An Unsupported Device Was Detected at the USB Interface
U1B01Not Relevant!; The Current at the USB Connector Is Voltage Too High
U1B04Not Relevant!
U1B05Not Relevant!

U1C

CodeDescription
U1C01Not Relevant!
U1C03RDU No Switching to Voice

U1E

CodeDescription
U1E00Communication Disturbance with Control Module Telecommunications
U1E01The GSM Network Is Often Overloaded and Not Available
U1E02Internet Connection Is Busy or Access Was Denied
U1E03An Error Occurred While Establishing Internet Link
U1E11Error in WAP Configuration Data
U1E14An Error Occurred During an Internet Session
U1E21Error in E-mail Configuration Data. E-mail Access 1 : Error in E-mail Configuration Data
U1E23A General Error Occurred While Sending an E-mail. E-mail Access 3 : Error in E-mail Configuration Data
U1E24A General Error Occurred While Receiving an E-mail
U1E31E-mail Access 1 : a General Error Occurred While Sending an E-mail
U1E32E-mail Access 2 : a General Error Occurred While Sending an E-mail
U1E33E-mail Access 3 : a General Error Occurred While Sending an E-mail
U1E41E-mail Access 1 : a General Error Occurred While Receiving an E-mail
U1E42E-mail Access 2 : a General Error Occurred While Receiving an E-mail
U1E43E-mail Access 3 : a General Error Occurred While Receiving an E-mail
U1E51E-Mail Account 1: POP 3 Circuit Fault
U1E52E-Mail Account 2: POP 3 Circuit Fault
U1E53E-Mail Account 3: POP 3 Circuit Fault

U1F

CodeDescription
U1FFFThe COMAND Software Is Not Up to Date. ( Not Standard Status )

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