BMW 7 Series: Electrical System
Electrical System - Operating Fluids
1.0 BATTERY
Only distilled water (available locally) is to be used when topping up the electrolyte level.
If a new battery (delivered dry) is to be placed into service, use only battery electrolyte ("sulfuric acid"), available locally.
2.0 SEALANT/SUPER GLUE/CONTACT CLEANER
Sealant
Aftermarket accessory installations which require routing electrical wires through metal body panels are to have the access holes sealed.
(former BMW Part No. 81 22 9 400 013)
BMW PART NUMBER SPECIFICATION
Wurth - Part No. 893430
SUPER GLUE
The rubber seal around the trunk release button of E39 vehicles can be repositioned with Wurth Rubberized Super Glue (Part No. 893 4103).
3.0 ELECTRICAL CONTACT ENHANCER AND CONTACT CLEANER
ELECTRICAL CONTACT/CONNECTOR GREASE
NyoGel 760G is resistive to moisture and can used for a lubrication of tin-lead type electrical connectors.
NyoGel 760G BMW Part No. 83 23 0 392 297
ELECTRICAL CONTACT ENHANCER
Stabilant 22A evaporates and leaves a thin polymer film which is conductive between the mating surfaces, while staying non-conductive between adjacent pins. At the same time it prevents the formation of any further harmful deposits.
BMW PART NUMBER SPECIFICATION
Wurth - Part No. 893622 (Stabilant 22A)
NOTE: 1 : Stabilant 22A must not be used on Oxygen Sensor connectors. To function, oxygen sensors require a flow of oxygen through the terminal connector to the sensor element. Stabilant 22A will affect this flow of oxygen, and will result in irreparable damage to the sensor.
NOTE: 2 : Stabilant 22A must not be used on plug connectors which carry fiber optics.
Stabilant 22A may migrate to the fiber optic and attenuate the optical signal.
CONTACT CLEANER SPRAY
Use to clean electrical and electronic components of dirt, grease, etc. Will not harm components or epoxy coverings. Allow to air dry. Do not dry with shop air supply as this may contaminate the connector.
BMW PART NUMBER SPECIFICATION
Wurth - Part No. 89365 (Zero Residue Electrical Contact Cleaner)
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Battery Replacement Information
A vehicle battery is constructed for the installation location and the
individual power requirements of the
particular vehicle. These individual power requirements depend on the
motorization and dif
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Attaching/Replacing BMW Badge
Position of attachment: inside of rear lid Remove plastic cover (1) from bore
holes (2).
Fig. 156: Removing Plastic Cover From Bore Holes
Inserting a set of pointed pliers through bore holes (1), detach retaining
washers (2) from pins of BMW badge.
Installation:
Use only new retaining washers.
Axle Mounting
REPLACING ALL RUBBER MOUNTS FOR REAR AXLE SUPPORT
Notes
IMPORTANT: Before removing rear axle support:
In order to avoid damage to vehicle hoist, perform weight compensation on
vehicle.
Load luggage compartment with sand bags.
Necessary preliminary work
Remove REAR AXLE SUPPORT
IMPORTANT: Risk of
