Installation instructions for electronic cruise control BMW 5 Series (E34)

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BMW Installation Instructions

Installation instructions for electronic cruise control BMW 5 Series (E34)

Instructions and illustrations are given here for left-hand­ drive cars. On right-hand-drive cars, various work stages must be carried out on the opposite side or in mirror-image fashion.

The electronic cruise control system can only be installed in conjunction with other special equipment items. Please refer to the Parts Microfilm for further details.

Tools and materials required:

Flat-bladed screwdriver
Phillips screwdriver
Torque wrench
Socket wrench insert (1/2 inch), 22 mm
Ratchet (1/2 inch)
Extension (1/2 inch)
Allen key, 4 mm
Hammer
Flat chisel
Offset ring wrenches, 10 mm
Universal knife
Rubber moulding adhesive

Contents Section

  1. Disconnecting the battery
  2. Removing steering wheel
  3. Removing pedal trim from left footwell
  4. Installing additional wiring harness in engine com- partment
  5. Installing control unit in electronics box
  6. Installing control motor
  7. Installing wire cable
  8. Installing additional wiring harness in car’s interior (only on cars without additional wiring harness)
  9. Installing cruise control switch
  10. Installing clutch switch (only on cars with manual gearbox)
  11. Adjusting wire cable
  12. Notes on operation

1. Disconnecting battery

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BMW 520i-525i:

Installation instructions for electronic cruise control BMW 5 Series (E34)

Important:

Print out the fault memories (the memories are automatically erased when the battery is disconnected).

Unscrew the negative cable (arrow) and lay aside.

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BMW 530i, 535i:

Installation instructions for electronic cruise control BMW 5 Series (E34)

Pull off cover (1) from the rear seat base on the right. Take out hex bolt (2) and remove cover (3).

Important:

Print out the fault memories (the memories are automatically erased when the battery is disconnected).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Unscrew the negative cable (arrow) from the earthing point.

2. Removing steering wheel

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Carefully lever out the BMW emblem with a small screwdriver in the direction indicated by the arrow.

IMPORTANT:

On vehicles equipped with the airbag system, the steering wheel should only be removed and installed by a BMW specialist workshop.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Release the steering lock.

Unscrew nut (1) and remove with washer (2).

Mark the position of the steering wheel in relation to the steering shaft.

Pull off the steering wheel.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Take out the screws (arrows) and remove lower section of steering wheel trim (1).

3. Removing pedal trim form left footwell

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Take out Phillips screw (1) and remove trim (2) in the direc­ tion of the arrow.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Rotate plastic screw (1) through 90° and remove.

Take out four Phillips screws (2) and pull pedal trim (3) downwards.

Pull the plug off the gong.

If appropriate, pull the plugs off the air-conditioning temperature sensor and low-pressure hose.

Remove pedal trim (3).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Lever out three plastic covers (1) with a screwdriver and take out Phillips screws (2).

Remove trim (3).

4. Installing additional wiring harness in engine com­ partment

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Take out the four Phillips screws in the electronics box (ar­ rows) and remove the lid.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Note:

If there is a blue 26-pin plug in the electronics box, the re­ quired additional wiring harness is already installed.

On cars without the additional wiring harness:

Take out the plastic screws (arrows) and remove cover (1).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Pull of rubber moulding (1) in the direction of the arrow.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Unscrew the plastic hex nuts (arrows) and carefully pull off the coolant reservoir (1).

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On all cars:

Installation instructions for electronic cruise control BMW 5 Series (E34)

Unscrew four plastic hex nuts (1) and remove cover (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Remove water valve cover (1) and release two cable straps (2).

Pull away the car’s main wiring (3).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Unscrew three hex nuts (1) and pull off plug (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Lift the water valve together with all its connections and carefully place it to one side.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Remove the fuse box lid (arrow).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Cut out perforated section (1) in the sound-insulating material.

Separate the retaining points on the pre-stamped metal panel section with a hammer and flat chisel.

Remove the metal section.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Insert the additional wiring harness in the cutout as shown by the drawing.

Install the water valve.

Run the additional wiring harness along the car’s main wir­ ing to the electronics box and secure with cable straps.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Pull cover (1) out of the electronics box. Unscrew hex nut (2) and remove holder (3) from the electronics box.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Cut through the rubber seal (arrow) on the electronics box, then feed the additional wiring harness into the box.

5. Installing control unit in electronics box

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Install control unit (1) in the electronics box. Fit hex nuts (2) and tighten.

Push cable plug (3) from the additional wiring harness on to the control unit and press in the locking mechanism (arrow).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push cable plug (1) on to the tied-back connection in the electronics box.

Apply suitable rubber moulding adhesive to the rubber seal and additional wiring harness to ensure a watertight con­ nection.

Install the holder. Place the lid of the electronics box in posi­ tion and secure with screws.

6. Installing control motor

BMW 520i, 525i:

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push holder (1) on to control motor (2).

BMW 530i, 535i:

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push holder (1) on to control motor (2).

On all cars:

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Screw on the hex nuts (arrows).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Attach wire cable (1) to tension strap (2) on the control motor.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push wire cable (1) in the direction of the arrow as far as possible, so that the spring keeper engages.

Place the control motor with the wire cable to one side. Note:

The tension strap is located in the wire cable.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Run the additional wiring harness branch (arrows) with the connection for the control motor forwards along the car’s main wiring and secure with cable straps.

BMW 520i, 525i

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Lay wiring harness (1) to one side and secure with cable straps (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Unscrew hex nuts (1). Mount control motor (2) as illustrated and screw firmly in position.

Push plug (3) on to control motor (2) and lock in the direction of the arrow.

Note:

Plug (4) is provided for the air-conditioning connection. On cars which are already equipped with the additional wiring harness, the connecting plug for the control motor is also located in this area.

BMW 530i, 535i:

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Remove hex nuts (1).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Install the control motor and screw on hex nuts (1).

Push cable plug (2) on to the control motor and lock in the direction of the arrow.

7. Installing wire cable

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Remove plastic hex nut (1). Push on holder (2) as illustrated and screw on plastic hex nut (1).

IMPORTANT:

On 530i and 535i cars, holder (3) must be installed.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Press rubber nipple (1) into holder cutout (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Feed wire cable (1) through hole (2) in holder (3). Press rubber keeper (4) into the hole.

Note:

On 520i and 525i cars, the plastic clip, which is provided in place of rubber keeper (4), must be pushed in until it locks.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Attach retaining clip (1) to wire cable (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Install the wire cable with retaining clip (1) in cutout (2) of throttle butterfly holder (3).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Press concertina-type rubber sleeve (1) on the end of the wire cable (arrow).

8. Installing additional wmng harness in car’s interior (only on cars without additional wiring harness)

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Raise covers (1) on the left and right wiper arms. Unscrew hex nuts (2) and remove both wiper arms.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Lever the five spreader rivets (arrows) out of left trim grille (1). Remove trim grille (1).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Cut the pre-formed section (arrow) out of the rubber grom­ met with a knife.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Feed additional wiring harness (1) through rubber grommet (2) into the car’s interior.

Pull rubber sleeve (3) into rubber grommet (2).

Note:

Before inserting additional cable harness (1), rub soap into rubber grommet (2). Install the trim grille. Install the wiper arms.

When installing:

Make sure the left wiper arm is pressed on fully, otherwise the contact pressure adjustment system will not function correctly.

Close the fuse box.

9. Installing cruise control switch

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push switch (1) in guide (2) on the steering column as in­ dicated by the arrow.

Push control knob (3) on control lever (4).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push foam material and cover (1) behind upper steering co­ lumn trim section (2) as illustrated.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Run the additional wiring harness for the control switch (1) to additional wiring harness in the engine compartment (2) along the car’s main wiring. Connect together the plugs and secure the additional wiring harnesses with cable straps.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Cut out the pre-marked area (arrow) of the lower steering column trim section.

10. Installing clutch switch (only on cars with manual gearbox)

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Remove brake light switch (1). Note:

To remove the brake light switch, press retaining tabs (2) together and pull out switch (1).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Remove the brake light test switch.

Unscrew hex nut (1) and pull out the brake light test switch.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Lever off clip (1) from brake pedal (2) and pull out pin (3).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Take out eccentric screw (1) from the clutch master cylinder.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Detach torsion spring (1). Remove hex nut (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Carefully remove pivot screw (1).

Place holder (2) in position and insert the pivot screw. Screw on the hex nut loosely.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Lock over-centre spring (1) into the retaining tab (arrow) on the pedal mechanism.

Insert the eccentric screw. Screw on retaining nut (2) loosely.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Attach holder (1) to the pedal mechanism (arrow) with hex bolt (2).

Tighten the pivot screw to a torque of 27 Nm. Connect the torsion spring.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Adjust the position of the clutch pedal with the eccentric screw (arrow) until measurement A = 275 mm.

Tighten the eccentric screw. Install the brake pedal pin.

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Install brake light switch (1). Install brake light test switch (2). Note:

Measurement A = 6-0.5 mm

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Press cable plug (1) on to clutch switch (2).

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Insert clutch switch (1) in the cutout in holder (2).

On cars with automatic transmission:

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Push plug (1) from the additional wiring harness on to cable bridge (3) and tie back above clutch master cylinder (2) with cable straps.

Note:

Cable bridge (3) is tied back on the additional wiring harness.

Install the steering wheel. When installing:

Renew the self-locking nut.

Tightening torque = 90 Nm

On all cars:

Reconnect the battery

11. Adjusting wire cable

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Installation instructions for electronic cruise control BMW 5 Series (E34)

Allow the engine to run until operating temperature is reached.

With the throttle butterfly closed and the control in “off” posi­ tion, adjust the wire cable by means of knurled nut (1) until gap (A) measures 1-2 mm.

12. Notes on operation

Any driving speed above approx. 45 km/h (28 mph) can be held constant and memorised.

Move the lever towards position 1 – Accelerate

The car’s road speed is maintained and the value memoris­ ed. If the lever is held in this position, the car will accelerate without the accelerator pedal being depressed. As soon as the lever is released, the speed then reached is maintained and memorised. After the accelerator has been pressed down, e. g. when overtaking, the car returns to the memoris­ ed speed.

Move the lever towards position 2 – Decelerate

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Installation instructions for electronic cruise control BMW 5 Series (E34)

The car’s road speed is maintained and memorised. If the lever is held in this position, the car will slow down (throttle closed automatically). The speed reached when the lever is released is then maintained and memorised.

Move the lever towards position 3 – Resume

The previously memorised speed is resumed and main­ tained.

Switching off the cruise control:

To switch off the cruise control:

Move the lever towards position 4 – Off

The cruise control system is switched off regardless of momentary operating or traffic conditions.

The system is also switched off if the rate of deceleration ex­ ceeds 1.5 m/s2 , e. g. on uphill gradients, and also when the brake or clutch pedal is depressed or the automatic transmission lever is moved from D to N.

To cancel a stored speed:

Turn the ignition key to position 1 when the car is at a standstill.

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