BMW 525i Sedan Technical Information PDF herunterladen (Seite 21)

Corrosion Protection

Extensive corrosion protection measures

implemented by BMW now make it possible

to offer a twelve-year unlimited milage anti-

corrosion warranty against rust perforation

on your vehicle provided that the vehicle is

maintained in accordance with the provisions

of the New Vehicle Limited Warranty as

outlined in the Warranty Section of this

Booklet (page 32).

The major degree of corrosion protection is

due to the electrophoretic dip painting

process which cathodically deposits paint

particles on all body parts, attracting paint

particles into the minutest cavities or seams.

Body parts are designed to provide optimum

corrosion protection.

During manufacture, exterior body parts

receive an additional corrosion protection

coat. Hood, trunk, doors and other body

parts are coated with PVC and sealed from

the outside.

All floor panels receive a resilient coating of

PVC for maximum protection against

damage due to stones, etc.

Corrosion protection materials tested over

many years are applied to the surfaces of

cavities and to the entire underside of the

vehicle during and after assembly.

Requirements for maintaining the 12-year

unlimited mileage anti-corrosion warranty

are outlined in the Warranty Section of this

Booklet (page 34).

Restoring corrosion protection

Please take care that anti-corrosion material

is replaced when your car is repaired after

body or chassis damage.

BMW will not accept any liability for any

parts and accessories not approved by

BMW.

Underbody maintenance

The underbody has to be cleaned at least

once a year, in spring, with plain water in

order to remove mud, chemical sediments

and other deposits. If those materials are

not removed, corrosion (rust) will occur on

metal components.

Your BMW center will do this anti-corrosion

service for you.

WARNING

Do not apply additional undercoating or rust-

proofing on or near the exhaust manifold,

exhaust pipes, catalytic converter or heat

shields. During driving, the substance used

for undercoating could overheat and cause a

fire.

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