2001 bmw 540i specs

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    Features and Instrument Panel. Lower-body rear side airbags were standard on the M5, remaining optional for other models. Retrieved 11 April The E39 facelift also known as LCI models were introduced in the model year produced from September

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    The E39 was replaced by the E60 in , however E39 Touring models remained in production until December The proportion of chassis components using aluminium significantly increased for the E39, and it was the first 5 Series to use aluminium components in the front suspension. It was also the first 5 Series where a four-cylinder diesel engine was available. Rack and pinion steering was used for the first time in a 5 Series, being fitted to the E39 four-cylinder and six-cylinder models.

    Unlike its E34 predecessor and E60 successor, the E39 was not available with all-wheel drive. The M5 sedan was introduced in , powered by the 4. Development for the E34's successor began in , [ citation needed ] internally known as "Entwicklung 39" and ended in The final design by Joji Nagashima was selected in June [3] [4] and later frozen for production under new design chief Chris Bangle.

    With design selection in , the series development phase began and took 39 months till start of production. The domestic German design patent was filed on 20 April , utilizing an E39 prototype. The first pilot production models were built in February , with full-scale production starting later in the year. A "latent heat accumulator" was available as an option up until September The next time the vehicle is started, this heat is automatically used to reduce exhaust emissions by heating the engine up to operating temperature quicker , for cabin heating and window defrosting.

    Separate to the latent heat accumulator is the Residual Heat function activated by a button labelled "REST" , [20] p which allows the demister and cabin heater to use the heat of an engine that has recently been turned off using an electric pump to push hot coolant through the heater core.

    The E39 was one of the first vehicles alongside the E38 7 Series to have curtain airbags , which protect the occupants heads in a side impact. Standard equipment on the launch models included dual front and side airbags , pretensioners and load limiters for the front seatbelts, [22] anti-lock brakes , traction control , power steering , and air conditioning.

    Unusually, two different steering systems were used for the E39, depending on the engine. Models with four-cylinder and six-cylinder models use rack and pinion steering, [25] the first time this system has been used in a 5 Series. This system steers from the front of the axle. Structural dynamics was also an objective of the body design, so the body's frequencies for torsional twisting and bending are in separate ranges and above natural frequency. These frequencies are out of the range of engine and driveline vibrations, to avoid vibrations being amplified.

    The E39 was the first 5 Series to use aluminium components in the front suspension. The proportion of chassis components using aluminium significantly increased for the E The front suspension consists of MacPherson struts , [28] [29] with six-cylinder cars using an aluminium front subframe.

    The rear suspension consists of a four link design called "Z-link" , which is similar to the system used by the E38 7 Series. The design minimises unintentional toe angle changes, which increases the stability of the handling. At launch, the petrol engines consisted of the M52 straight-six and M62 V8 , [30] which were both new engines at the time. In , the "technical update" TU versions of these engines were introduced, which introduced double VANOS to increase torque at low rpm.

    The initial diesel models used the M51 straight-six turbo-diesel engine. In , its successor the M57 was introduced, however the M51 also remained in production for two more years. In , the M47 four-cylinder turbo-diesel was introduced in the d model, which is the only E39 model to use a four-cylinder engine. Note that the i, i, i and i had several overlapping automatic transmission options for some years. Figures shown are for European models.

    Eamon's 2001 BMW 540i/6 Introduction

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