Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2011128I CONVERTIBLE (E88) L6-3.0L (N51)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDIAGRAMSDIAGRAM INFORMATION AND INSTRUCTIONSSIGNAL GLOSSARYSIGNAL NAMES WITH S
2011 BMW 128i Convertible (E88) L6-3.0L (N51)
Signal Names With S
2011 BMW 128i Convertible (E88) L6-3.0L (N51)SECTION Signal Names With S
Signal Names With S
S_50 Ignition Lock
S_AL Signal, Low Beam
S_ATANK Sensor Signal, Active Tank
S_BLS Brake-Light Signal
S_BLTS Brake-Light Test Signal
S_DSCPAS Signal, DSC Button
S_EKP Relay, Electric Fuel Pump
S_HZG1 Signal 1, Heating Module, Active Tank
S_HZG2 Signal 2, Heating Module, Active Tank
S_HZG3 Signal 3, Heating Module, Active Tank
S_GLK1 Activation, Glow Plug, Cyl. 1
S_GLK2 Activation, Glow Plug, Cyl. 2
S_GLK3 Activation, Glow Plug, Cyl. 3
S_GLK4 Activation, Glow Plug, Cyl. 4
S_GLS1 Activation, Glow Plug, Cyl. 1
S_GLS2 Activation, Glow Plug, Cyl. 2
S_GLS3 Activation, Glow Plug, Cyl. 3
S_GLS4 Activation, Glow Plug, Cyl. 4
S_HR Tripping, Main Relay
S_IB Activation, Interior Light
S_KOMP Compressor Activation
S_KSH Activation, Fuel Heating
S_KUP Signal, Clutch Switch
S_LESELI Reading Light, Left
S_LESERE Reading Light, Right
S_OLD Signal, Oil-Pressure Switch
S_PTANK Sensor Signal, Passive Tank
S_RFL Signal, Reversing Light
S_RS+ Signal, Reversing-Light Switch
S_SL Signal, Side Light
S_SLP Secondary Air Pump
S_START Signal, Start
S_STH Control Valve, Steering Gear, High
S_STL Control Valve, Steering Gear, Low
S_VENTIL Signal, Multiway Valve, Additive Tank
S_VVTR1 Activation, Relay, Variable Valve Gear
S49_L Direction Indicator, Left
S49_R Direction Indicator, Right
S49W Signal, Hazard Warning Switch
S55H Fog Light, Rear
S55V Fog Light, Front
S56A-D Switch, High Beam/Headlight Flasher
SBE Seat Occupancy Detector
SBK- Safety Battery Terminal-
SBK+ Safety Battery Terminal+
SCHI Mixing Potentiometer
SCHI- Mixing-
SCHI+ Mixing+
SIABF- Side Airbag, Passenger-
SIABF+ Side Airbag, Passenger+
SIAF- Side Airbag, Driver-
SIAF+ Side Airbag, Driver+
SIB Interior Lights
SIMF_CMD Data Line, Telephone
SIMF1_+DA1 Data Line, Telephone
SIMF_-DA Data Line, Telephone
SLOCK Signal, Start Lock
SM- Stepping Motor -
SM+ Stepping Motor +
SOLL_IN Activation, Solar Sensor
SOLL_M Ground, Solar Sensor
SPERRE Activation, Electrical Interlock
SPERRE+ Activation, Electrical Interlock
SPVBFH Mirror Adjustment, Passenger, Horizontal
SPVBFM Mirror Adjustment, Passenger, Ground
SPVBFV Mirror Adjustment, Passenger, Vertical
SPVFAH Mirror Adjustment, Driver, Horizontal
SPVFAM Mirror Adjustment, Driver, Ground
SPVFAV Mirror Adjustment, Driver, Vertical
SSBLX- Airbag Sensor, B-Pillar, Left-
SSBLX+ Airbag Sensor, B-Pillar, Left+
SSBLY- Airbag Sensor, B-Pillar, Left-
SSBLY+ Airbag Sensor, B-Pillar, Left+
SSBRX- Airbag Sensor, B-Pillar, Right-
SSBRX+ Airbag Sensor, B-Pillar, Right+
SSBRY- Airbag Sensor, B-Pillar, Right-
SSBRY+ Airbag Sensor, B-Pillar, Right+
STARTDDE Start Signal
STARTDME Start Signal
STOP Signal, Enable/Stop, Convertible-Top Control
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.