W211 Introduction219 HO W211 Intro (WFF) 08-05-02 1 W211 Introduction Topics • Body changes as compared to W210 • Lighting and instrument cluster • Crash concepts • Flatwire cable • Audio system • Supplemental Restraint System (SRS) • Optional equipment training 2 W211 vs. W210 - Body Comparison 3 Interior Dimensions • Height +12 mm • Headroom (front) -3 mm w/glass roof • Headroom (rear) +13 mm • Trunk +35 liters 4 Exterior Dimensions • Wheel base +21 mm • Width +23 mm • Length unchanged at 4818 mm 5 Radiator Blinds • Located in front of radiator • Only on E320 • Designed to create better Cd of 0.26 6 Radiator Blind Components 1 - Electrical connector 2 - Switchover valve 3 - Radiator shutter control module (N56) 7 Blind Function • Controlled by Passenger SAM (N10/11) • Inputs - vehicle speed - coolant temperature • Operating parameters - blinds close upon start up (if engine is cold) - up to 50 mph blinds open (if engine is warm) - above 50 mph blinds closed - above 207º F blinds open regardless of vehicle speed 8 Lighting and Instrument Cluster Tail lights Rain/light sensor Instrument cluster 9 Tail Lights • Long lasting bulbs - closed glass capsule filled with xenon gas • Bulbs not replaceable • Substitute lighting 10 Rain / Light Sensor (B38) • 1 block unit with 10 lenses • Linked via an interface with N70 • Equipped with heating element • Controls - intermittent wipe request - automatic driving lights on request 11 Rain / Light Sensor Layout 12 Instrument Cluster 13 Instrument Cluster Legend 1 - Left turn signal indicator lamp 2 - ABS / ESP warning lamp 3 - Speedometer 4 - Multifunction display 5 - Distance warning lamp (only with DTR) 6 - Right turn signal indicator lamp 7 - Coolant temperature display with warning lamp 8 - Tachometer with ABS malfunction indicator lamp, high beam indicator lamp, seat belt warning lamp, restraint systems warning lamp 9 - Selector lever position with transmission range display 10 - Clock with preglow indicator, engine diagnosis and brake indicator lamps 11 - Fuel tank level display with warning lamp 12 - Instrument lighting, reset button 14 Instrument Cluster Changes • Designed using back-lighting technology • Digital fuel gauge • Digital vehicle temperature gauge • Analog type clock • Circular multi-function display • Separate mileage and gear position display • Some indicator functions have been relocated 15 Crash Concepts • Bolted front and rear modules • Headlamp housing with repair fixtures • Energy-absorbing bumpers with protective strips replaceable from the outside 16 Front & Rear Modules • Prevents damage to frame in minor collisions • Shorter repair times • Lower repair costs 17 Headlamps & Bumper Strips • Headlamp fixtures have predetermined fracture points • Protective strips easily replaced 18 W211 Flatwire Cables 19 Flatwire Application • Application 211 - door panel harness (illumination) - headliner harness (illumination) • Repair procedures - currently non-repairable - do not hang components from flatwire - no color codes, uses circuit I.D. number printed 20 mm from connector ends 20 Flatwire Construction • Construction - flexible printed cable - 200 micron thickness, 5.5 mm wide = 20A - stacking layers increases amperage rating of cable - new lamella style contacts 21 Flatwire Advantages & Disadvantages • Advantages - manufacturing cost reduction - production fully automated - reduced installation space (less bulky) - 20 to 30% weight savings - improved connection contacts (better reliability) - fewer connections - future designs will allow control module integration in flatwire harness • Disadvantages - fragile - not repairable at this time 22 Flatwire - Front OCP 23 Flatwire - Rear OCP 24 Flatwire Door Panel Harness Routing Connector lock Front door panel Rear door panel 25 Audio System 26 System Highlights • Audio head units - Audio 50 - COMAND (not available at launch) • Audio Gateway - 2 versions - with and without LOGIC 7 (base version = without LOGIC 7) • Media Oriented Systems Transport Bus (MOST) - replaces D2B - offers increased gross data transfer rate • Audio Gateway functions - AM/FM reception - audio amplifier - interface between MOST and CAN B - central diagnostic interface for MOST components 27 Audio 50 Head Unit • Initial head unit for vehicle launch • Different design • Produced by Harman Becker • CD drive for audio - 6 disc changer optional 28 Audio 50 Controls • Volume adjustment similar to A/C control ring • Incorporates softkeys for menu selections • Push control knob for scrolling and selecting 29 Audio Cassette Access • Open button • Closed manually 30 Compact Disc Access • Push button to open • Push button to close • Storage / CD location 31 CD Changer • 1 single insert slot • 2 CD eject button • Plays 6 discs + 1 in head unit • LED’s indicates CD in changer 32 LOGIC 7 Multi-Channel Audio System • A 420-watt sound system • 12 state-of-the-art loudspeakers (7.1 system: 7 channels + 1 subwoofer channel) • 7-channel surround matrix that converts any 2-channel material into surround sound • Produces a true 360º “enveloping” soundfield with maximum “audio sweetspot” for all passengers • System utilizes a digital fiber optic network (MOST Bus) interface for optimized signal transmission 33 LOGIC 7 Component Layout 34 LOGIC 7 Component Legend 1 - Audio Gateway (N93/1) sound 7.1 / 8-channel 420-watts DPS amplifier 2 - One 80 mm metal matrix center speaker 3 - Four 41 mm metal matrix dome tweeters 4 - Four 168 mm metal matrix wide-band transducers 5 - Two 80 mm metal matrix surround speakers 6 - One 260 mm double voice-coil subwoofer 7 - Audio head unit 8 - CD changer 9 - Antenna amplifier 10 - Microphone 35 Supplemental Restraint System (SRS) Window and side airbags ETR’s Rollover deployment 36 Window & Side Airbags • Incorporates window airbags • Front occupant side airbags relocated to front seats • Rear occupant side airbags in rear doors 37 Window Bags Gas generator relocated in "A" pillars 38 Front Side Air Bags • Left front side airbag with left front side air bag ignition squib (R12/9) • Right front side airbag with right front side air bag ignition squib (R12/10) 39 Seat Occupant Sensor (B48) • Senses weight • Used to determine deployment threshold 40 New Style ETR’s • Redesigned mechanical function - retraction mechanism - torsion rod • Front passenger ETR ignition squib (R12/2) • Driver ETR ignition squib (R12/1) 41 Belt Force Limiter • Integrated into front ETR’s only • Belt force limiter squib yellow connector: - passenger belt force limiter (R12/26) - driver belt force limiter (R12/27) 42 Rear ETR • Rear ETR’s as known from previous chassis • Right rear ETR ignition squib (R12/7) • Left rear ETR ignition squib (R12/6) 43 Frontal Acceleration Sensors (B48/1 and B48/2) • Located behind the front headlamp assemblies • Arrow on sensors must point toward the grill • Sensors record frontal acceleration values and send them to restraint systems control module (N2/7) 44 Side Impact Sensors (A53/1 and A54/1) Located on the leading edge of the front seat cross member 45 Rollover Deployment Logic If N2/7 determines a roll over: • Side curtains deploy • ETR’s deploy 46 W211 Optional Equipment Training • Panorama roof (solar panels covered later) • HVAC (covered later) - 2 zone system - 4 zone system • Keyless go (covered later) • Distronic (covered later) • Heated steering wheel • Dynamic front seats 47 Heated Steering Wheel (HSW) • Heating wires in wheel • Switched on / off using switch • Red LED indicates function • Functions for 24 minutes - 7 minutes high - 17 minutes low • Uses a DC/DC converter 48 DC/DC Converter (N99) • Controls, monitors, shutsdown and diagnosis of heater • Bolted to crossmember behind instrument cluster • Raises the on-board voltage to 42 or 48 volts • Provides 100 W heating power 49 Dynamic Seat Improved cornering comfort 50 Dynamic Seat Control Unit Locations 51 Multi Function Display 52