E60 m5 Complete Vehicle BMW M5 E60/E61

Model: E60

Production: from 9/2005

Introduction

The new BMW M5 will be launched in October 2005 in the US market. It will be the most powerful M5 of all time and the first to exhibit this power potential at first glance.

The basic concept, however, remains unchanged: The E60 M5 too combines - without compromise - the qualities of a luxury class sedan with the power potential of a sports car. Its visual appearance, however, is intentionally somewhat less discreet as its predecessor. The front and rear aprons are now slightly more prominent and, together with the rear spoiler, 4-pipe exhaust system and 19" wheels, and the M5- characteristic side gills unmistakably identify the M5 at first glance - even from the side.

The highlight of the new M5 is, of course, the V10 engine derived from BMW-Williams Formula 1. With the governed limit at 8,250 rpm, it not only provides Formula 1 performance but also develops that typical Formula 1 sound.

Despite these features, the M5 still remains an understatement-product. Its exterior conveys a powerful yet still reserved appearance. At no point has its everyday suitability gained from the E60 series been lost.

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Based on the E28 5 Series, this M5 was the first car to combine the everyday usability of a sedan with the performance of a sports car. The introduction of the first M5 was not only the fastest sedan at the time but also heralded the birth of a whole new segment.

Cylinders: Six in-line

Capacity: 3453 cc

0-62: 6.5 seconds

Top speed: 152 mph

Performance: 286 bhp

Torque: 340 Nm

Quick Facts

Hand built in Dingolfing.

US version had 30 bhp less due to the changes that allowed it to run on unleaded fuel with a catalytic converter (when compared with the European version).

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The successor to the E28 came with one of the most powerful straight-six engines ever built by BMW. The exterior appearance was more individual: muscular front and rear aprons, contrasting side skirts and a unique wheel design. The E34 M5 far exceeded the sales figures of its predecessor.

Cylinders: Six in-line

Capacity: 3795 cc

0-62: 5.9 seconds

Top speed: 155 mph (electronically limited)

Performance: 340 bhp

Torque: 400 Nm

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The E39 M5 effortlessly combined the concept of a luxury saloon with sports car technology and in so doing, attained the unanimous respect of enthusiasts and journalists. With the launch of E39, the traditionally understated appearance became more athletic and confident. The addition of muscular front and rear aprons coupled with more pronounced side skirts and 18-inch wheels served to reinforce the M5's sporty intentions. The E39 M5 was also the second M model to receive the now trademark M four-tailpipes (M Roadster was the first).

Cylinders: V8

Capacity: 4941 cc

0-62: 5.3 seconds

Top speed: 155 mph (electronically limited)

Performance: 396 bhp

Torque: 516 Nm

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The new BMW M5 will be launched in October 2005 in the US market. It will be the most powerful M5 of all time and the first to exhibit this power potential at first glance.

Prominent front and rear aprons, paired with side sills and a powerful rear spoiler clearly distinguish the M5 from the E60 Series. A rear diffuser - also a Formula 1 offshoot - provides an additional power boost on the rear axle.

The highlight of the new M5 is, of course, the V10 engine derived from BMW-Williams Formula 1. With the governed limit at 8,250 rpm, it not only provides Formula 1 performance but also develops that typical Formula 1 sound.

The V10 all-aluminium naturally-aspirated engine with 5 l displacement develops 400 bhp output. This output can be increased to 500 bhp by pressing the power button on the center console.

Technical Data

TECHNICAL DATA

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Body

The E60 M5 combines - without compromise - the qualities of a luxury class sedan with the power potential of a sports car. Its visual appearance, however, is intentionally somewhat less discreet as its predecessor.

Features that make the E60 M5 stand out when compared to the 5 Series sedan are

1. Front and rear bumpers are now slightly more prominent
2. A rear spoiler has been added
3. Rear diffuser
4. The signature twin dual pipe exhaust system
5. 19" wheels
6. M5-characteristic side gills

Despite these features, the M5 still remains an understatement-product. Its exterior conveys a powerful yet still reserved appearance. At no point has its everyday suitability gained from the E60 production series been lost.

The body structure of the M5 is taken from the production 5 Series vehicle. It utilizes GRAV technology (the entire front end of the vehicle is made of aluminum, not steel).

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Exterior Design

The exterior design of the M5 has a number of spectacular original features in comparison to the production version.

Air inlets in the bumpers instead of fog lights

Lowered apron has an integrated front spoiler.

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In conjunction with sealing the engine compartment, the front bumper reduces lift on the M5's front axle by 50% in comparison to the standard car.

The front spoiler, the diffuser, the rear spoiler lip and the special underside paneling provide the required down force in the M5.

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The rear bumper of the vehicle does not only make the vehicle appear more sporty but includes an air diffuser to better improve the aerodynamics of the vehicle.

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The M5 also continues with the signature M dual twin exhaust pipes started with the M Roaster.

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The rear deck lid no longer has a cylinder lock for trunk opening with a key. In case of an electrical failure, there is a mechanical release under the rear seat. It is an eylet/loop with a bowden cable that connects to the trunk actuator mechanism.

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Interior Design

The cockpit of the new BMW M5 is tailored to the requirements of the M driver, who looks for sports car performance and precision ergonomics. The redesigned instruments in the dashboard combined with the SMG gearshift paddles on the Multi-function steering wheel and the presence of the MDrive button serve to create the unique M ambience.

Distinctive M Instrument Cluster.

The instrument cluster has been especially designed for the BMW M5. Chrome rings surround the two circular displays for the speedometer and rev counter. The scales are white and permanently illuminated, while the indicator needles glow in traditional M red.

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This conveys a unique, almost race-car like ambience. Arranged between the two circular gauges are the displays for SMG mode, current gear and engine oil level.

Illuminated Selector Lever

The SMG selector lever is illuminated. The gearshift pattern on the selector lever handle is permanently illuminated, and the current gear is highlighted.

Next to the selector lever are the buttons for the dynamic system settings: DME, DSC, EDC, and SMG Drivelogic.

Automatic Air Conditioning

The IHKA system is installed in the M5 as standard equipment.

Same as the production based 5 Series, minor adjustments can be made utilizing the iDrive menu for climate control.

Central Information Display with Navigation

Navigation is standard equipment on the M5 which includes the Top Hi-Fi (Logic7) audio system and the acclaimed iDrive system.

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Front Seats

The standard M Sports seats provide excellent levels of lateral support to the driver and front passenger. This includes individual backrest width adjustment for optimum fit, and adjustable thigh support, seat heating with three settings as well as an adjustable lumbar support. Up to three personal settings can also be stored in Memory and accessed when required.

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M Multi-Function Seat (Optional)

Enhanced driving enjoyment with innovative seat system

Backrest width adjustment system serves the purpose of optimally adapting the side sections of the backrest to the individual upper body of the occupants with the aim of achieving improved support of the upper body when cornering.

BMW has developed the active backrest width adjustment in M-vehicles for performance-oriented drivers. The active backrest width adjustment (ALBV) changes the setting of the side sections of the backrest dynamically when cornering. The dynamic setting of the backrest is dependent on various parameters.

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Due to the centrifugal forces exerted on the upper body, forces acting towards the outer edge of a bend occur when driving through corners dynamically. The upper body is displaced towards the outer edge of the bend.

The active backrest width adjustment system activates the respective side section of the backrest to counteract the forces and to keep the upper body stable in the seat. The driver can concentrate fully on steering.

Drive Unit

The drive unit consists of a DC motor with a step-down gear mechanism flanged to it. The gear mechanism engages in the adjustment assembly on which the side sections of the backrest are mounted. The side sections of the backrest are adjusted from maximum open (0 %) to maximum closed (100 %) by the adjustment assembly.

An electric motor is driven by a PWM signal (pulse-width modulation) for this purpose. The adjustment speed can be influenced corresponding to the pulse width. At maximum closing speed, the side section of the backrest is adjusted from completely open (0 %) to completely closed (100 %) within approx. 1 second.

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The drive units are controlled with following pulse width corresponding to the characteristic curve.

CHARACTERISTIC CURVE AND ADJUSTMENT RANGE

The drive unit additionally features various sensors. The end position sensor, a two-wire Hall sensor, recognizes the fully opened backrest width (0 %).

Two Hall sensors, offset by 120 degrees, are additionally installed for determining the direction of rotation and position. The signals of the Hall sensors are counted up or down, enabling the ALBV control unit to determine the direction of rotation and position. The Hall sensors are monitored by the ALBV control unit and sampled every 200 ms.

A temperature sensor is additionally installed in the drive unit. At excessively high temperatures, the drive unit is no longer activated until the temperature has dropped below a permissible value.

The active backrest width adjustment system consists of the control units

1. Active backrest width adjustment, driver (ALBV FA)
2. Active backrest width adjustment, front passenger (ALBV BF)

Both control units are located in the respective driver's or front passenger's seat. The control units feature a PT-CAN bus link. This connection to the PT-CAN is necessary in view of the high number of parameters relating to the vehicle dynamics from the DSC and DME control unit and the short response time of the system.

NOTES

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System Activation

The active backrest width adjustment system cannot be activated before the engine is running. There are buttons for the driver's and front passenger's side located in the center console switch cluster (SZM) to switch on the system.

A green LED lights when the button is pressed with the engine running. The indicator switches to two LEDs or three LEDs when the button is pressed again.

The active backrest width adjustment system is switched off immediately if the button is pressed for longer than 1.2 seconds and all LEDs go out.

Each of these LEDs represents a specific characteristic map that is stored in the ALBV FA / ALBV BF.

The actuators for setting the side sections of the backrest are actuated corresponding to the selected characteristic map. The actuators are controlled by means of a PWM signal (pulse-width modulation).

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The ALBV system features the following functions

1. Basic Function Active backrest width adjustment
2. Additional Functions Easy-entry for driver's and front passenger's side Backrest width adjustment Readjustment of the backrest width Soft start/stop of the drive unit for backrest width adjustment Backrest width memory function Special features in M-Drive mode

Basic Function

After activation of a corresponding characteristic curve (comfort, normal, sports) the outer (closest to the curve) side section of the backrest is controlled during vehicle operation depending on various parameters.

The side sections of the backrest are adjusted to such an extent as to take up the transverse forces and to keep the position of the upper body stable in the seat.

Various control units make available information on the PT-CAN to the ALBV control units for the purpose of controlling the respective side sections. The DSC control unit provides the most important information.

The following information is made available

1. Road Speed - The mean value of the signals of all four wheel speed sensors is determined and sent as the road speed signal on the PT-CAN.
2. Longitudinal and transverse acceleration - The longitudinal and transverse acceleration is calculated in the DSC control unit from the signals of the Y sensor 2.
3. Yaw Rate - The yaw rate, i.e. the rotation about the vertical axis, is also calculated in the DSC control unit from the signals of the Y sensor 2.
4. Steering Angle - The steering angle is determined by the steering angle sensor in the steering column switch cluster SZL. The SZL sends a data telegram via the F-CAN to the DSC control unit.
5. Steering Angle Speed - The steering angle speed is also determined by the steering angle sensor and sent via the SZL to the DSC control unit.

Further information from the DME/DDE and driver's/front passenger's seat modules

1. Engine speed information - The DME/DDE sends an engine speed signal so that the ALBV control unit recognizes that the engine is running and the system can be activated.
2. Memory information - The backrest width memory is integrated in the seat memory located in the respective driver's/front passenger's seat module. The seat module initiates the backrest width memory by means of a K-CAN telegram.

Convenience Entry/Exit Aid

To make it easier for the driver and passenger to get in and out of the vehicle the side sections of the backrest are completely opened (0 %) and held in this position. The side sections of the driver's seat backrest are opened under the following conditions

1. Terminal R OFF
2. Terminal R ON and driver's door opened
3. Driver's door open and terminal 15 OFF

The side sections of the front passenger's seat backrest are opened under the following conditions

1. The front passenger's door is opened and the seat belt not buckled.

Note. The easy-entry facility is deactivated when the active backrest width adjustment is enabled, i.e. the engine is running and the side sections of the backrest are in the position last stored.

Backrest Width Adjustment

The backrest width can be preset manually by means of a seat adjustment switch on the control panel.

The customer has the option of setting the backrest width to his/her individual requirements. Adjustment is possible as from terminal 30.

The switches for backrest width adjustment are connected via the K-bus to the center console switch cluster (SZM). The SZM is connected via the K-CAN to the SGM and the PT-CAN.

After selecting a characteristic curve for the active backrest width adjustment, only the presetting between completely open (0 %) and half closed (50 %) is possible otherwise subsequent adjustment would no longer be possible if the side sections of the backrest were completely closed (100 %).

Only the open backrest side section can be adjusted during control of the active backrest width.

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Readjustment of the Backrest Width

Readjustment is intended to balance out the asymmetry in the side sections of the backrest after manual adjustment of the backrest width or after assuming a memory position.

Readjustment takes place when the electronic circuitry in the ALBV control unit recognizes a difference of >5 Hall pulses between the left and right actuator motors.

Readjustment takes place 1 second after the end of the backrest width adjustment procedure. If the adjustment was not successful, the procedure is repeated after 2 seconds.

No readjustment takes place while the active backrest width adjustment is in operation.

Soft Start/Stop of Drive Unit

A special control facility is responsible for starting and stopping the electric motor. The controlled start function minimizes starting current peaks and avoids mechanical noise during the adjustment procedure.

The controlled soft stop function prevents overrunning of the drive unit.

Backrest Width Memory

The backrest width memory is located in the respective driver's and passenger's seat module. With the aid of the memory buttons in the seat control panel, two positions can be stored for each personalized key in the backrest width adjustment memory.

The setting of the driver's seat last selected is additionally stored in the current key under following conditions

1. 10 seconds after manual backrest width adjustment
2. When retrieving a memory position
3. When switching terminals from 15 to R M-Drive

Service Information

Initialization of the Drive Units

An initialization procedure must be performed to ensure smooth operation after replacing a control unit or a drive unit.

As part of this initialization procedure, the zero position of the drive units is defined by the signal from the end position sensors. For this purpose, the drives are moved to the fully opened position and the switch pressed and held for at least 15 seconds.

Initialization can be performed with the aid of the BMW diagnosis system.

Service functions => Body => Active backrest width adjustment

Rear Seats

The rear seat have been modified slightly in order to improve seat positioning during hard cornering maneuvers.

The M5 still boasts having split 60/40 rear seatbacks for extra storage capability and an armrest with built in cup holders.

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