BMW 750i 2007, Service And Warranty Information

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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 ser-
vice for you.
WARNING
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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