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 MANUALSBMW2011335IS 2D COUPE, STANDARDREPAIR AND DIAGNOSISRESTRAINTSRESTRAINTS CONTROL SYSTEMSRESTRAINT SYSTEM - FUNCTIONAL DESCRIPTION - E92
2011 BMW 335is 2D Coupe, Standard
Restraint System - Functional Description - E92
2011 BMW 335is 2D Coupe, StandardSECTION Restraint System - Functional Description - E92
- Restraints Systems - Functional Description
- Crash Safety Module
- Crash-Active Head Restraint
- Ignition Circuit, Safety System (Airbag)
- Installation Position, Seat Occupancy Electronics
- Multiple Restraint System (MRS)
- Notes
- Brief component description
- MRS control unit
- Front door airbag sensor on driver's side and front door airbag sensor on front passenger side (US version)
- Airbag sensor in the B-pillar driver's side and front passenger side
- Front airbag sensor on driver's side and front passenger side (US version)
- Seat belt buckle switch
- Front passenger seat occupancy detection via seat-occupancy mat with pressure sensors (European version)
- Switch for front passenger airbag deactivation (European version)
- Front passenger seat occupancy detection via seat-occupancy mat with capacitive sensor system (US version)
- CAS: Car Access System
- DME or DDE: Digital Motor Electronics and/or Digital Diesel Electronics
- JBE: Junction Box Electronics
- FRM: Footwell module
- Instrument panel: Instrument panel
- TCU: Telematics control unit
- Driver's and front passenger airbag
- Side airbag
- Knee airbag (US version)
- Seatbelt tensioners for driver belt and passenger belt
- Reel tensioners for driver's seat belt and passenger belt (US version)
- Seat belt force limiter
- Safety battery terminal
- Battery cable monitoring wire
- Airbag control lamp
- Seat belt warning lamp
- Indicator lamp for front passenger airbag deactivation
- Fuel pump
- System functions
- Self-test
- Impact detection
- Activation the safety system
- Message to other control units
- Visual and acoustic seat belt warning for driver belt and passenger belt
- Notes for Service department
- Roll-Over Protection System
- Seat Belt Extender
- Belt hand-over
- Brief description of components
- Belt hand-over controller
- Belt lock contact
- Seat occupancy detection
- System functions
- Function logic for extension of the belt hand-over
- Function logic for retraction of the belt hand-over
- Blocking protection, overheating protection
- Overvoltage detection and undervoltage detection
- Notes for Service department
- Seat Belts
- Seat Occupation Detection (OC3)
- Seat-Position Sensor
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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.