Technical Training. Product Information. E89 Complete Vehicle
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Technical Training. Product Information. E89 Complete vehicle. BMW Service General information Symbols used The following symbol is used in this document to facilitate better comprehension or to draw attention to very important information: contains important safety notes and information that needs to be observed strictly in order to guarantee the smooth operation of the system. Information status and national variants BMW Group vehicles meet the requirements of the highest safety and quality standards. Changes in requirements for environmental protection, customer benefits and design render necessary continuous development of systems and components. Consequently, there may be discrepancies between the contents of this document and the vehicles available in the training course. This document basically relates to left-hand drive vehicles with European specifications. Some controls or components are arranged differently in right-hand drive vehicles than shown in the graphics in this document. Further differences may arise as the result of the equipment variations used in specific markets or countries. Additional sources of information Further information on the individual topics can be found in the following: • Owner’s Handbook • Integrated Service Technical Application. Contact: [email protected] ©2009 BMW AG, München Reprints of this publication or its parts require the written approval of BMW AG, München The information contained in this document form an integral part of the technical training of the BMW Group and are intended for the trainer and participants of the seminar. Refer to the latest relevant information systems of the BMW Group for any changes/additions to the Technical Data. Information status: February 2009 VH-23 / International Technical Training E89 Complete vehicle. Content. 1 Introduction. 1 1.1 Overview 1 1.1.1 Changes compared to the E85 3 2 Body. 4 2.1 Introduction 4 2.1.1 Comparison of body components 4 2.1.2 Dimensions 5 2.2 Retractable hardtop 5 2.2.1 Overview - Retractable hardtop 7 2.2.2 Components 15 2.2.3 Retractable hardtop operation 20 2.2.4 Check control messages 23 2.2.5 Sensor status 24 2.2.6 Auto-remote operation of luggage compartment 25 2.2.7 Emergency actuation 26 3 Drive. 27 3.1 Models 27 3.2 Engines 28 3.2.1 Technical data of N52 engine 28 3.2.2 Technical data of N54 engine 29 3.2.3 Circuit diagram - Drive 29 3.3 Manual gearbox 31 3.4 Automatic gearbox 32 3.5 Rear axle final drive 32 4 Chassis and suspension. 33 4.1 Overview 33 E89 Complete vehicle. Content. 5 Electrical/electronic systems. 34 5.1 Introduction 34 5.2 Bus overview 34 5.3 MOST direct access port 37 5.4 Control unit locations 39 5.4.1 Head unit 40 5.5 Aerial locations 41 5.6 Multiple restraint system 44 5.6.1 Circuit diagram 45 5.6.2 Seat occupancy detection, passenger 50 E89 Complete vehicle. 1 Introduction. 1.1 Overview The new Z4 is the first BMW Roadster to have a retractable hardtop. The new model is therefore the successor to the BMW Z4 Roadster and the BMW Z4 Coupe. With its long engine compartment lid, large wheel apertures, long wheelbase and squat overhang it features all typical elements of a BMW Roadster. These features are further enhanced by the flat front section, the pronounced shoulder line and rear end. In addition, the engine compartment lid that extends over the wheel arches, the large BMW radiator grille, the side gills, the black A-pillar, the contoured roof and rear lights with innovative light technology further cement the characteristic accents. The two-piece, electrohydraulically operated retractable hardtop made of lightweight aluminium panels takes only 20 seconds to open or close fully automatically. The compact stowage of the roof elements in the luggage compartment facilitates a flat, Roadster-characteristic rear design and a luggage compartment volume between 180 and 310 litres. Large window areas together with the heated glass rear window provide an optimum all-round field of view. The new Z4 At its launch in May 2009, the E89 will be available with three straight-6 engines with an output from 150 kW/204 bhp to 225 kW/306 bhp. All models are equipped with EfficientDynamics measures and have been optimised in terms of acceleration and fuel consumption. The models are ’Best in Class’ in their segment and already conform to the future exhaust emission standard EURO 5. The sports automatic transmission with double clutch is optionally available for the BMW Z4 sDrive35i. Compared to the manual gearbox, shifting gear without interrupting tractive power combines the comfort of a BMW automatic transmission with maximum dynamics and the further optimised acceleration and fuel consumption values. An automatic gearbox with optimised gearshift dynamics, direct engine connection and reduced slip is optionally available for the BMW Z4 sDrive30i and BMW Z4 sDrive23i. All Sports automatic transmissions feature shift paddles on the steering wheel. The new BMW Z4 offers outstanding dynamic driving properties. Equipped with dynamic driving control as standard, the characteristics of the vehicle’s drive and dynamic driving functions can be selected in three levels by the push of a button. As a result, the accelerator pedal characteristics, gearshift program and shift speed of the optional automatic gearbox, DSC response and the optional adaptive M running gear are switched between two characteristic curves. 1 E89 Complete vehicle. 1 Introduction. Head and elbow clearance as well as ease of entry have been greatly improved compared to the predecessor model. The low seat position near the rear axle creates the typical ride experience in a BMW Roadster. High-grade materials, outstanding workmanship as well as the driver-orientated design of the dashboard and centre console of the Z4 produced at the Regensburg plant ensure Sheer Driving Pleasure. This also includes the BMW iDrive with all its familiar functions used for the first time in the Roadster. 2 E89 Complete vehicle. 1 Introduction. 1.1.1 Changes compared to the E85 • Improved interior and comfort • Retractable hardtop • Bi-xenon as standard (fog lights discontinued) • Through-loading facility • Wheelbase +146 mm • 17” to 19” wheels • Optional adaptive M running gear • Optional sports automatic transmission with double clutch (Z4 sDrive35i) • Cruise control with brake intervention • Dynamic driving control • CIC Professional (with hard disk navigation) 3 E89 Complete vehicle. 2 Body. 2.1 Introduction The following objectives were pursued in the development of the E89 body: • Harmonious overall impression with extended proportions, coupe-inspired roof line and flat rear end • Remote controlled, fully automatic retractable hardtop with load help function • Through-loading facility for carrying two pairs of skies or a golf bag also with the top down • Compared to the predecessor model, more and easier-to-use storage compartments in the vehicle interior as well as a rear storage area behind the seats • Compared to the predecessor model, greatly improved all-round vision provided by a second side window and a larger rear window • Compelling impression (driver-orientated), top-quality appearance and functionality of the interior • Compared to the predecessor model, distinctly reduced noise level at higher speeds 2.1.1 Comparison of body components Comparison of E89 body components with the E85: Comparison E85 — E89 Index Description 1 New components (newly developed) 2 Common parts 3 Modified components (developed with minimum expenditure) 4 E89 Complete vehicle. 2 Body. 2.1.2 Dimensions The E89 has grown compared to the E85. The width is now 1790 mm (+9 mm). Garage dimensions E85/E89 2.2 Retractable hardtop The retractable hardtop consists of two aluminium roof panels. They are operated by means of an internal linkage. The retractable hardtop and the rear module are driven hydraulically. The hydraulic system consists of 6 hydraulic cylinders that are supplied with pressure by the hydraulic unit via the hydraulic lines. The cylinders are always actuated in pairs. The retractable hardtop is equipped with a headliner without tensioning cables. The seals have no trim strips. E89 with hardtop half opened 5 E89 Complete vehicle. 2 Body. Closing the retractable hardtop 6 E89 Complete vehicle. 2 Body. 2.2.1 Overview - Retractable hardtop Overview - Mechanical system Overview - Mechanical system of retractable hardtop Index Description 1 Roof panel 2 2 Roof panel 1 3 Main pillar mechanism 4 Rear module mechanism 5 Rear module 7 E89 Complete vehicle. 2 Body. Hydraulic circuit diagram E89 Hydraulic circuit diagram Index Description A Throttle B Filter C Non-return valve D Emergency operating valve 8 E89 Complete vehicle. 2 Body. E Pilot-controlled non-return valve 1 LH hydraulic cylinder, main pillar 2 RH hydraulic cylinder, main pillar 3 LH hydraulic cylinder, roof panel 4 RH hydraulic cylinder, roof panel 5 LH hydraulic cylinder, rear module 6 RH hydraulic cylinder, rear module 7 Valve for rear module 8 Valve for roof panel and rear module 9 Valve for main cylinder and roof panel 10 Pressure relief valve 11 Changeover valve 12 Hydraulic pump 13 Changeover valve 14 Two-way flow control valve 9 E89 Complete vehicle. 2 Body. Overview - Hydraulics and locking mechanism Overview - Hydraulics and locking mechanism of retractable hardtop Index Description 1 LH latch, windscreen cowl panel 2 Drive for locking retractable hardtop 3 RH latch, windscreen cowl panel 4 RH hydraulic cylinder, roof panel 5 RH hydraulic cylinder, main pillar 6 RH hydraulic cylinder, rear module