BMW multiple restraint system fault codes
The 128 fault codes the multiple restraint system can store, and what each one means. Some codes mean different things in different versions of the module; tap a code to see which applies to your car.
On: 3 Series (E30), Z1 (E30/Z1), 8 Series (E31), 7 Series (E32), 5 Series (E34), 3 Series (E36), Z3 (E36/7), 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53), X3 (E83)
- 0001 MRS: Airbag, driver, stage 1 (and 4 other meanings)
- 0002 MRS: Belt tensioner, driver (and 3 other meanings)
- 0003 MRS: Belt tensioner, front passenger (and 3 other meanings)
- 0004 MRS: Airbag, passenger, stage 1 (and 4 other meanings)
- 0005 MRS: Side airbag, front left (and 3 other meanings)
- 0006 MRS: Side airbag, front right (and 3 other meanings)
- 0007 MRS: Side airbag, rear left (and 3 other meanings)
- 0008 MRS: Side airbag, rear right (and 2 other meanings)
- 0009 MRS: Head airbag (ITS), left (and 4 other meanings)
- 000A MRS: Head airbag (ITS), right (and 4 other meanings)
- 000B MRS: Battery, positive terminal isolation 1 (and 4 other meanings)
- 000C MRS: Airbag, front passenger, stage 2 (and 2 other meanings)
- 000D MRS: Airbag, driver, stage 2 (and 3 other meanings)
- 000E Ignition voltage ZK2 -> Passenger seat belt tensioner (and 4 other meanings)
- 000F Ignition voltage ZK3 -> Passenger airbag (and 4 other meanings)
- 0010 Voltage autonomous capacitor (and 4 other meanings)
- 0011 Supply voltage (and 5 other meanings)
- 0012 TZ- lock line (and 5 other meanings)
- 0013 Malfunction indicator lamp (and 4 other meanings)
- 0014 Passenger seat occupancy detection (and 4 other meanings)
- 0015 Pressure sensor driver (and 4 other meanings)
- 0016 Pressure sensor passenger (and 4 other meanings)
- 0017 Temperature; control unit error (and 3 other meanings)
- 0018 Seatbelt buckle driver (and 3 other meanings)
- 0019 Seatbelt buckle passenger (and 1 other meaning)
- 001A MRS: Seat occupancy detector: coding data (and 2 other meanings)
- 001B MRS: Crash telegram memory (and 1 other meaning)
- 001C MRS: Seat-occupancy detector: plausibility (digital KSE) (and 1 other meaning)
- 001D MRS: Seat-occupancy detector: plausibility (KSE coding data does not match equipment) (and 2 other meanings)
- 001E MRS: Coupling in firing circuit, seat belt tensioner, passenger
- 001F MRS: Seat-occupancy detector: plausibility (KSE hardware defective) (and 2 other meanings)
- 0020 MRS: Sensor, side airbag, left, line fault (and 2 other meanings)
- 0021 MRS: Sensor, side airbag, right, line fault (and 2 other meanings)
- 0022 MRS: Coupling in firing circuit, side airbag, rear left
- 0023 MRS: Coupling in firing circuit, side airbag, rear right
- 0024 MRS: Coupling in firing circuit, head airbag (ITS), front left
- 0025 MRS: Coupling in firing circuit, head airbag (ITS), front right
- 0026 MRS: Coupling in firing circuit, battery pos.-term. disconnection 1
- 0027 MRS: Coupling in firing circuit, airbag, passenger, stage 2
- 0028 MRS: Coupling in firing circuit, airbag, driver, stage 2
- 0029 MRS: Coupling in firing circuit, head airbag, rear left
- 002A MRS: Coupling in firing circuit, head airbag, rear right
- 002B MRS: Coupling in firing circuit, battery pos.-term. disconnection 2
- 002C MRS: Checksum, coding data
- 002D MRS: Sensors for side airbag, front
- 002E MRS: Seat-backrest locking, driver
- 002F MRS: Seat-backrest locking, passenger
- 0030 Control unit error autonomy failure indicator (and 3 other meanings)
- 0031 Control unit error safety switch / monitoring (and 2 other meanings)
- 0032 Control unit error airbag F LSH (and 2 other meanings)
- 0033 Control unit error airbag F LSL (and 2 other meanings)
- 0034 Control unit error TZ blocking line (and 2 other meanings)
- 0035 Control unit error ignition contact base point (and 3 other meanings)
- 0036 Control unit error seat belt F LSH (and 3 other meanings)
- 0037 Control unit error seat belt F LSL (and 2 other meanings)
- 0038 Control unit error settling test (and 2 other meanings)
- 0039 Control unit error seat belt BF LSH (and 2 other meanings)
- 003A Control unit error seat belt BF LSL (and 3 other meanings)
- 003B Control unit error current source error (and 2 other meanings)
- 003C Control unit error airbag BF LSH (and 3 other meanings)
- 003D Control unit error airbag BF LSL (and 3 other meanings)
- 003E Control unit error reed coil (and 3 other meanings)
- 003F Control unit error multiplexer (and 2 other meanings)
- 0040 MRS: Coupling in firing circuit, seat belt tensioner, rear left (and 1 other meaning)
- 0041 Control unit error autonomy capacitor (and 2 other meanings)
- 0042 MRS: Coupling in firing circuit, seat belt tensioner, rear middle
- 0043 Control unit error ignition capacitor airbag driver (and 1 other meaning)
- 0044 Control unit error ignition capacitor seat belt driver (and 1 other meaning)
- 0045 Control unit error ignition capacitor seat belt passenger (and 1 other meaning)
- 0046 Control unit error ignition capacitor airbag passenger
- 0047 Control unit error signal path M1
- 0048 Control unit error signal path M2
- 0049 Short circuit between ignition capsules
- 004C General error of airbag control unit
- 004D Error crash telegram
- 0050 MRS: Power supply
- 0051 MRS: Airbag telltale lamp (and 1 other meaning)
- 0052 MRS: Telltale lamp for front passenger airbag deactivation
- 0055 MRS: Emergency call function
- 0060 MRS: Seat-belt lock, driver (and 2 other meanings)
- 0061 MRS: Seat-belt lock, passenger (and 2 other meanings)
- 0062 MRS: Seat-belt lock, rear left (and 1 other meaning)
- 0063 MRS: Seat-belt lock, rear right (and 1 other meaning)
- 0064 MRS: Seat-belt lock, rear middle
- 0067 MRS: Switch for front passenger airbag deactivation
- 0068 MRS: Switch for front passenger airbag deactivation (inverse)
- 0069 MRS: Switch for front passenger airbag deactivation
- 006A MRS: Seat belt-catch contact, driver
- 006B MRS: Seat belt-catch contact, passenger
- 006C MRS: Belt-buckle contact, rear left (spare)
- 006D MRS: Belt-buckle contact, rear right (spare)
- 006E MRS: Switch for front passenger airbag deactivation
- 006F MRS: Switch for front passenger airbag deactivation (inverse)
- 0070 MRS: Seat occupancy detector (seat Occupancy Detection) (and 1 other meaning)
- 0071 MRS: Seat occupancy detector (and 2 other meanings)
- 0072 MRS: Seat-backrest locking, K bus (and 2 other meanings)
- 0073 MRS: Seat-backrest locking, driver
- 0074 MRS: Seat-backrest locking, passenger
- 0075 MRS: External rollover sensor
- 0080 MRS: Sensors for side airbag, front (and 2 other meanings)
- 0081 MRS: Sensor for side airbag, left (and 2 other meanings)
- 0082 MRS: Sensor for side airbag, left (and 2 other meanings)
- 0083 MRS: Sensor for side airbag, left (and 2 other meanings)
- 0084 MRS: Sensor for side airbag, right (and 2 other meanings)
- 0085 MRS: Sensor for side airbag, right (and 2 other meanings)
- 0086 MRS: Sensor for side airbag, right (and 2 other meanings)
- 0087 MRS: Coupling fault, sensor, side airbag, left (and 2 other meanings)
- 0088 MRS: Coupling fault, sensor for side airbag, right (and 2 other meanings)
- 0089 MRS: Side sensor, B-pillar, X-direction, left (and 1 other meaning)
- 008A MRS: Side sensor, B-pillar, X-direction, right (and 1 other meaning)
- 008B MRS: Side sensor, B-pillar, X-direction, right (and 1 other meaning)
- 008C MRS: Side sensor, B-pillar, Y-direction, left (and 1 other meaning)
- 008D MRS: Side sensor, B-pillar, Y-direction, left (and 1 other meaning)
- 008E MRS: Side sensor, B-pillar, Y-direction, right (and 1 other meaning)
- 008F MRS: Side sensor, B-pillar, Y-direction, right (and 1 other meaning)
- 0090 MRS: Coding incorrect
- 0091 MRS: Crash telegram memory (and 1 other meaning)
- 0092 MRS: Crash telegram memory
- 0093 MRS: Locking, control module
- 0094 MRS: Triggering threshold
- 0095 MRS: LCD luminance
- 00A0 MRS: Rollover sensor not fitted
- 00A1 MRS: No message from DSC control module or message incorrect (CLU2VDA)
- 00A2 MRS: No message from DSC sensor or message incorrect
- 00A3 MRS: No message from DSC control module or message incorrect (ASC3 1F3h)
- 00A4 MRS: CAN communication fault
- 00F0 MRS: Internal control module fault
- 00FF Central control unit - Unknown error
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