BMW 7 Owners & Service Manuals

BMW 7 Series: Notes On Handling Optical Fibres

IMPORTANT: To avoid damage when handling optical fibres, comply with the following points:

  • The minimum permitted bending radius is 25 mm
  • Do not subject optical fibres to compressive and tensile load
  • Protect optical fibres against the effects of heat > or =85 ºC (e.g. during welding work, drying work with infrared heater or hot air blower)
  • Fibre-optic cables are permitted to show only one junction point (bridge), replace fibre-optic cables if necessary

NOTE: The optical fibres are colored differently as follows:

  • Green = MOST (M edia O riented S ystems T ransport) optical fibre
  • Yellow = ISIS (I ntelligent S afety and I ntegration S ystem) fiber-optic cable
  • Orange=repair fibre-optic cables

Follow instructions for processing cables and optical fibres.

NOTES ON HANDLING WIRING HARNESSES AND CABLES

The following applies in general

To avoid damage, observe the following instructions:

  • Avoid compressive and tensile loads
  • To ensure professional repairs, perform repair work only with BMW-approved or recommended special tools and spare parts
  • Make sure cables are laid without kinks or abrasions
  • Ensure non-contacting routing at sharp-edged body parts; use edge protection if necessary
  • Secure additionally laid cables/leads with cable ties

The following additionally applies

Shielded lines (coaxial lines):

IMPORTANT: Shielded lines may not be repaired!

  • This may lead to indifferences in noise radiation and interference immunity at contact points in the shield
  • To satisfy the requirements of the type approval, it is essential to replace shielded cables completely

Fibre-optic cable:

NOTE: Fibre-optic cables are colored differently as follows:

  • Green = MOST (M edia O riented S ystems T ransport) optical fibre
  • Yellow = ISIS (I ntelligent S afety I ntegration S ystem) optical fibre
  • Orange=repair fibre-optic cables

IMPORTANT:

  • Optical fibres may only reveal one separation point (bridge); renew optical fibre if necessary
  • Smallest permissible bending radius is 25 mm
  • Avoid effects of heat > or = 85 º

Treating cables and fibre-optic cables: see TREATING CABLES AND FIBRE-OPTIC CABLES.

FlexRay: It is possible to repair the FlexRay. In the event of damage, the cables can be joined with conventional BUTT CONNECTORS AND HEAT-SHRINK HOSES.

NOTE:

  • FlexRay lines may only reveal one separation point (bride); renew complete line if necessary
  • The cable is a twisted cable. If possible, maintain twisted cable after repair

Airbag lines: REPAIRING AIRBAG CABLES

NOTES/INFORMATION ON START ASSISTANCE (JUMP STARTING)

Do not start the engine with help of starting sprays.

Preparation

Conform with the following when starting the engine with a jump starting cable.

  • Ensure that the jump starting cable wires are of appropriate cross-section size.
  • Only use fuse-protected jump starting cables.
  • Check whether the current-supplying battery has 12 V voltage.
  • If the engine is started from the battery of another vehicle, ensure that there is no contact between the bodies of both vehicles.

IMPORTANT: Never touch electrically live ignition system components: high voltage - danger of injury!

If the battery in the vehicle supplying power is weak, start the engine of this vehicle and let it run at idling speed.

Operation

It is essential to conform to the procedures so as to avoid injury to persons or damage to parts.

  • Automatic transmission: select drive position "P", apply parking brake.
  • Manual transmission: move gear lever to neutral position, apply parking brake.
  • Ensure that the jump leads cannot get caught in rotating parts, e.g. fan.
  • First connect both positive poles of the batteries with one jump starting cable (red).
  • Use the battery positive terminal in the engine compartment for vehicles with the battery in the luggage compartment.
  • Then use the second jump starting cable (black) to connect the negative post of the current-supplying battery with the earth/ground point (not the negative pole or the body) of the vehicle to be started.

IMPORTANT: Do not connect the second jump starting cable (black) with the negative pole of the battery in the vehicle to be started. Produced gas could be ignited by sparks.

Risk of explosion!

After the engine of the vehicle to be started has fired, first disconnect the jump starting cable between the negative pole and the earth/ground point. Then remove the starting cable from the positive poles.

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