Bmw 2006 bmw 325i Bedienungsanleitung PDF herunterladen (Seite 147)

147n

Index Data Technology Repairs Car care Controls Overview

Caring for your vehicle

Exterior finish

To provide effective corrosion protec-

tion, multilayer paintwork is applied at

the factory. Cataphoretic immersion

priming techniques are supplemented

using special body-cavity protectants,

with the application of specially-devel-

oped and extensively tested materials.

A layer of flexible PVC is first applied

to the undercarriage. Following this, a

comprehensive undercoating treat-

ment with a wax-based protectant is

applied. Regular maintenance makes

an important contribution to maintaining

the safety and value of your vehicle.

Increasing awareness of the effects

of harmful environmental factors on

vehicle finishes have urged paint and

vehicle manufacturers to initiate

ongoing programs designed to further

improve the durability of their finishes.

Despite this, environmental factors that

occur locally or regionally can have

negative effects on the finish of your

vehicle. These should guide you in

determining the frequency and extent

of your efforts to maintain the vehicle

finish.

Depending upon material and type

of impact (perforation of paint layer),

physical stresses from sand, road salt,

gravel, etc., can cause corrosion to

start extending beneath the finish,

starting at the point of impact.

Road dirt, tar spots, dead insects,

animal droppings (strong alkali effect)

and tree excretions (resins and pollen)

all contain substances capable of caus-

ing damage when allowed to remain on

the finish of your vehicle for any period

of time. This includes spots, etching,

flaking, and separations in the top coat.

In industrial areas, deposits of flue dust,

lime, oily soot, precipitation containing

sulfur-dioxide (acid rain) and other

environmental pollutants will damage

the vehicle's finish unless adequate

care is provided – even though this is

generally limited to the outside

horizontal surfaces.

In coastal regions, high levels of

atmospheric salt and humidity promote

corrosion.

In tropical zones, temperatures of over

105 7 (40 6) in the shade prevail, in

addition to heavy ultraviolet radiation

and high humidity. Under those condi-

tions, light paints can reach tempera-

tures up to 175 7 (80 6) and dark

paints up to 250 7 (120 6).

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