LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
BMW
>>
2007
>>
X3 Automatic
>>
Repair and Diagnosis
>>
Restraints
>>
Restraints Control Systems
>>
Safety Systems - Overview - E83
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Safety Systems - Overview - E83
Expand All (for easy ctrl-f)
Collapse All
Safety Systems
History of Multiple Restraint Systems
Notes
MRS 1
MRS 2
MRS 3
MRS 4
MRS4RD
Notes
MRS4RD Equipped E83
Comparison E46/E53 MRS W/E83 MRS4RD
System Components
Notes
MRS4RD Control Unit
Sensors
Notes
Up-Front Sensors
Door Pressure Sensors
B-Pillar Satellites
Seat Occupancy Detector (OC-3 Mat)
Belt Buckle Switch
Actuators
Notes
Driver's Airbag
Passenger Airbag
Head Airbag (Curtain Airbag)
Notes
Curtain Airbag
Side Airbag
Seatbelt Tensioner
BST
System Functions
Notes
Deployment
Pre-Drive Check
Cyclic Check
System Readiness
Fault Storage
Crash Signal
Emergency Call (If equipped w/Telematics)
Notes
Manual Emergency Call
Breakdown Call
Automatic Emergency Call