Table of Contents E83 Life Cycle Impulse Workbook Subject Page Introduction .4 Body .4 Front.4 Rear .5 Interior.6 Cockpit .6 Door Panels .6 Drivetrain.7 N52 Engine.7 Intake Air Duct.7 Digital Engine Electronics (DM E) .7 6-speed Manual Transmission .7 6-speed Automatic Transmission GM 6 (6L45).7 Chassis.8 DXC+.8 RDC .8 Power Steering Cooling .8 Initial Print Date: 10/06 Revision Date: Table of Contents Subject Page Electrical Systems EWS 4.4 . Lights M odule 2 . Rear Seat Heating Oil Level Indicator Radio, CD . Navigation. 00 00 00 00 00 00 OO Life Cycle Impulse Workbook Model: E83 Production: from 8/2006 ■BIECIIMB After completion of this module you will be able to: • Identify the changes made to the E83 X3 LCI 3 E83 Life Cycle Impulse Workbook E83 Life Cycle Impulse Workbook 4 Introduction The BMW X3 has been available on the market as of the 2004 model year and represents a premium product in the segment of compact luxury SUVs. As of August 2006 production, the E83 will undergo a redesign in orderto maintain its leading position in the market and to fend off the ever increasing number of competitors. This model redesign, known as LCI (Life Cycle Impulse), includes a pronounced visual upgrade, the introduction of new engines as well as a whole series of improvements in details as well as in the range of interior trim and fittings. As of September 2006, the E83 X3 3.0i with M54B30 (170 kW/231 bhp) will be replaced with the X3 3.0si with N52B30O1 (191 kW/260 bhp). Body The only technical change is to the openings forthe reversing lights in the inner panel of the rear hatch. Due to the higher posi¬ tioning of these lights, it was also necessary to displace the clear¬ ance for their bulbs further upward. The carrier, sheet metal components and assembly concept remain unchanged. Only the underbody paneling has been adapt¬ ed to the new engines as part of the model redesign. M odifications to the bodyshell components are solely restricted to details such as the repositioning of threaded connections, pins or securing ele¬ ments forthe adapted wiring harnesses. All parts of the bodyshell (hood/tailgate, side panels, doors, sills and weatherstrips) remain unchanged.The same also applies to the body connection points. Front The redesigned E83 can be immediately distinguished from its predecessor by the partly painted bumpers and the double kidney grill that extends further downward. Front view - Left: E83 up to 8/06, Right: E83 LCI The newly designed front bumper which was previously two-piece is now three pieces. A top section painted in the car color and a bottom coverthat is also painted are now clipped onto the black- structured, bolted carrier.These painted parts can be individually replaced as required by removing the complete bumper. The kidney grills now extend further downward is available only with light titanium bars. The grill between the double kidney and bumper as well as the lower grill are black on all vehicles. Rear The rear bumper on the E83 LCI is also a new design. It is now made up of four main parts (previously one-piece). Two black side panels and one exhaust finisher also in black are fitted on a carrier painted in the car color. The panel at the lower edge of the rear hatch is now also painted in the car color, thus making a decisive contribution to the overall higher grade impression of the X3's rear end. Two separate reflectors are clipped on to the left and right of the exhaust finisher. The PDC sensors of the rear bumper are located in the painted area and are therefore painted in the car color (unchanged black at the front). The inner panel of the rear hatch is adapted to the new design lay¬ out of the lights. Although the exterior shape remains unchanged, different openings are required to accommodate the repositioning of the reversing lights. Rearview - Left: E83 up to 8/06, Right: E83 LCI E83 Life Cycle Impulse Workbook 5 6 E83 Life Cycle Impulse Workbook Interior Cockpit Door Panels The dashboard has been upgraded by numerous details.The instrument cluster shroud (previously attached) provides for a wider color separation groove and a more harmonious general impres¬ sion. The dashboard, shroud, and airbag cover also have a new structure finish. The cover of the glove compartment is positioned slightly lower. The trim covers for the fresh air grills, the light switch cluster and the cup holder are now coated with soft paint (three different colors - depending on interior color). Both the basic steering wheel as well as the sports steering wheel now feature a new steering wheel rim and a new cover. In addition, the sports steering wheel features new spokes and a new backing. Both steering wheels have 3 spokes, the previous 4- spoke basic steering wheel is no longer available. As in other model series, the interior rear-view mirror in the E83 is available with a digital compass. Cockpit- Left: E83 up to 8/06, Right: E83 LCI The door mirrors have also been distinctly upgraded by new sur¬ face structuring and geometry. The connection to the dashboard has been improved while the trim covers for the speakers are now larger due to the installation of new speakers. Storage compartment shelves integrated in the doortrim panel replace the previous netshell combination. The finisherforthe power window switches are now smaller. Drivetrain N52 Engine The N52 engine first offered in the E90 will be reengineered for the September2006 launch and will then be known as the N52K. The exact engine designation will N52B30O1. Compared to the M 54 6-cylinder engine previously fitted in the E83, the N52K is characterized by lowerfuel consumption (12% reduction), reduced weight (10 kg less), 35 hp (30 kW) increase in power output and an increase of 11 lb ft torque. The exhaust manifold has been slightly adapted to match the geometry of the E83. The same also applies to the oil pan with modified underbody area and threaded connection to the front axle. The shape ofthe engine support has been modified to accept the N52.The power steering oil reservoir is now mounted on the screw connection forthe alternator instead of on the frame side member as previously. Intake Air Duct Forthe first time at BMW, the intake silencer is a fixed part in the engine. The unfiltered air duct is crash-optimized. An unfiltered air resonator and a time chamberfiltered air resonator are used in orderto satisfy acoustics requirements. Digital Engine Electronics (DME) The engine management MSV80 is used in connection with the N 52 K. This system is a further development ofthe MSV70 and has been adapted in terms of several details. 6-speed ManualTransmission The synchromesh ofthe gearshift mechanism has been newly developed to provide outstanding gearshift comfort both at low as well as elevated shift forces. lst/2nd gearshift now takes place in double cone synchromesh and single-cone synchromesh for 3rd/4th and 5th/6th gear. A central selector valve connects the gearshift with a shift gate on the inside forthe first time. Another new feature is the passive shift lock that guarantees distinctly greater locking reliability in addition to further optimized smoothness of operation. 6-speed Automatic Transmission GM6 (6L45) The new automatic transmission GM 6 replaces the previous trans¬ mission GM 5 in the E83. The transmission has 6 forward drive ranges. The spread and gearratio are virtually identical to the GM5. Its main advantages include a 6 % reduction in fuel consumption and improved gearshift dynamics. The lowerfuel consumption results from the use of neutral idle control (N 1C), low converter slip thanks to the use of a turbine-tor¬ sion damper as well as reduced drag losses in the clutches. In the GM 6 is a one-way clutch to ensure stable shift quality when shifting from 1st to 2nd. Thanks to their high drive percentage with the clutch engaged, converters with turbine-torsion dampers pro¬ vide a direct connection to the engine. The transmission control unit is accommodated together with the hydraulic control unit in the transmission (mechatronics concept). This arrangement provides advantages in terms of package space and, due to the smaller number of interfaces, it also ensures increased system reliability. E83 Life Cycle Impulse Workbook 7 8 E83 Life Cycle Impulse Workbook Chassis Electrical Systems Various modifications to the chassis of the E83 have been neces¬ sary to accommodate the higher performance N52K engine. Most of these modifications, however, are restricted to geometric adapta¬ tions (steering system and heat shields). DXC + In addition to the known features such as ABS, ASC, CBC, DSC and HDC, the following will be added: • Dynamic Traction Control (DTC) for ensuring maximum trac¬ tion irrespective of the driving surface • Hill starting assistance (Hill-holder) • Dry brakes in rain • Brake standby/brake travel reduction • Brake fading assistance RDC All E83 vehicles will be equipped with the tire pressure monitoring system RDC which was introduced in March 2006. Power Steering Cooling The DSC control unit has an additional program module forthe power steering cooling. This function increases the fan speed to secure the required cool¬ ing capacity under high load conditions (e.g. uphill/downhill driving) at low speed. The signals relating to the driving speed, power out¬ put (via HFM) and steering angle lock are used as the control data forthis purpose. EWS 4.4 The E83 will be equipped with the EWS 4.4.This electronic con¬ trol provides increased anti-theft protection, and eliminates the need for DM E - EWS alignment. Lights Module 2 The lights module 2 replaces the previous light switch cluster in the E83 LCI and combines the features of the AHL control unit. Rear Seat Heating Rear seat heating will be offered in all X3 models. Oil Level Indicator The oil level indicator is now integrated in the instrument cluster. Radio, CD The new radio platform of all E83 features a double tuner and sta¬ tion list expansion. An AUX-ln jack is provided on the center console forthe connec¬ tion of external audio sources. The Random function in the CD changer now only refers to the selected CD and no longerto all (up to six) CDs in the magazine of the changer. This reduced number of selection options substantial¬ ly shortens the pauses between the music tracks. Navigation The computer hardware is now lead-free and therefore recyclable.